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Document and Entity Information Document - USD ($)	12 Months Ended
Document and Entity Information Document - USD ($)	Jul. 31, 2013	Sep. 10, 2013	Jan. 31, 2013
Document Information [Abstract]
Entity Registrant Name	Palo Alto Networks Inc
Entity Central Index Key	0001327567
Document Type	10-K
Document Period End Date	Jul. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Document Fiscal Year End Date	--07-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		71,667,163
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,873,615,675

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Current assets:
Cash and cash equivalents	$ 310,614	$ 322,642
Short-term investments	109,007	0
Accounts receivable, net of allowance for doubtful accounts of $51 and $164 at July 31, 2013 and July 31, 2012, respectively	87,461	45,642
Prepaid expenses and other current assets	22,617	13,373
Total current assets	529,699	381,657
Property and equipment, net	32,086	20,979
Long-term investments	17,314	0
Other assets	6,507	5,168
Total assets	585,606	407,804
Current liabilities:
Accounts payable	15,544	9,214
Accrued and other liabilities	14,609	15,189
Accrued compensation	22,004	11,307
Deferred revenue	153,945	86,296
Total current liabilities	206,102	122,006
Deferred revenue—non-current	95,285	49,512
Other long-term liabilities	11,799	7,215
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock; $0.0001 par value; 100,000 shares authorized; none issued and outstanding at July 31, 2013 and July 31, 2012	0	0
Common stock, $0.0001 par value; 1,000,000 shares authorized; 71,612 and 67,852 shares issued and outstanding at July 31, 2013 and July 31, 2012, respectively	7	7
Additional paid-in capital	381,703	309,092
Accumulated other comprehensive loss	(16)	0
Accumulated deficit	(109,274)	(80,028)
Total stockholders’ equity	272,420	229,071
Total liabilities and stockholders’ equity	$ 585,606	$ 407,804

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Current assets:
Allowance for doubtful accounts (in usd)	$ 51	$ 164
Stockholders' equity:
Preferred stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued (in shares)	71,612,000	67,852,000
Common Stock, Shares, Outstanding (in shares)	71,612,000	67,852,000

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Revenue:
Product	$ 65,456	$ 60,793	$ 61,944	$ 55,514	$ 49,439	$ 43,524	$ 38,638	$ 42,861	$ 243,707	$ 174,462	$ 84,800
Services	46,929	40,496	34,555	30,420	26,203	22,176	18,045	14,252	152,400	80,676	33,797
Total revenue	112,385	101,289	96,499	85,934	75,642	65,700	56,683	57,113	396,107	255,138	118,597
Cost of revenue:
Product	16,505	15,855	16,636	14,416	12,533	11,524	10,248	10,310	63,412	44,615	21,766
Services	13,753	11,835	10,982	9,774	9,034	7,109	5,265	4,530	46,344	25,938	10,507
Total cost of revenue	30,258	27,690	27,618	24,190	21,567	18,633	15,513	14,840	109,756	70,553	32,273
Total gross profit	82,127	73,599	68,881	61,744	54,075	47,067	41,170	42,273	286,351	184,585	86,324
Operating expenses:
Research and development	17,627	16,048	15,495	13,312	11,746	10,462	8,514	7,848	62,482	38,570	21,366
Sales and marketing	59,635	51,733	45,796	42,607	37,721	30,216	25,612	22,368	199,771	115,917	62,254
General and administrative	11,748	12,268	9,747	8,956	8,852	6,430	5,768	5,157	42,719	26,207	13,108
Total operating expenses	89,010	80,049	71,038	64,875	58,319	47,108	39,894	35,373	304,972	180,694	96,728
Operating income (loss)	(6,883)	(6,450)	(2,157)	(3,131)	(4,244)	(41)	1,276	6,900	(18,621)	3,891	(10,404)
Interest income	137	133	116	98	11	3	2	2	484	18	3
Other expense, net	(132)	(157)	(60)	(170)	(77)	(3)	(566)	(464)	(519)	(1,110)	(1,651)
Income (loss) before income taxes	(6,878)	(6,474)	(2,101)	(3,203)	(4,310)	(41)	712	6,438	(18,656)	2,799	(12,052)
Provision for income taxes	8,958	808	512	312	289	(837)	288	2,322	10,590	2,062	476
Net income (loss)	$ (15,836)	$ (7,282)	$ (2,613)	$ (3,515)	$ (4,599)	$ 796	$ 424	$ 4,116	(29,246)	737	(12,528)
Net income (loss) attributable to common stockholders, basic and diluted									$ (29,246)	$ 0	$ (12,528)
Net income (loss) per share attributable to common stockholders, basic and diluted (in usd per share)									$ (0.43)	$ 0.00	$ (0.88)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic and diluted (in shares)									68,682	19,569	14,201

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Net income (loss)	$ (29,246)	$ 737	$ (12,528)
Other comprehensive income (loss), net of tax:
Unrealized losses on investments	(16)	0	0
Comprehensive income (loss)	$ (29,262)	$ 737	$ (12,528)

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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- Definition

Net of tax amount of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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+ Details

CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) Statement - USD ($) $ in Thousands	Total	Redeemable convertible preferred stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Redeemable convertible preferred stock, beginning balance (in shares) at Jul. 31, 2010		41,084,000
Redeemable convertible preferred stock,beginning balance at Jul. 31, 2010		$ 64,491
Common stock, beginning balance (in shares) at Jul. 31, 2010	19,790,000
Beginning balance at Jul. 31, 2010	$ (65,648)		$ 2	$ 2,587	$ 0	$ (68,237)
Increase (Decrease) in Stockholders' Equity
Net income (loss)						(12,528)
Net income (loss) and other comprehensive income (loss)	(12,528)
Other comprehensive loss					0
Stock option exercises, net of unvested portion and excess tax benefit (in shares)			951,000
Stock option exercises, net of unvested portion and excess tax benefit	1,094		$ 0	1,094
Share-based compensation for equity based awards	4,733			4,733
Repurchase of unvested restricted common stock from terminated employees (in shares)			(990,000)
Repurchase of unvested restricted common stock from terminated employees	0		$ 0
Proceeds from settlement of note receivable	895			895
Redeemable convertible preferred stock converted into common stock upon initial public offering	$ 0
Redeemable convertible preferred stock, ending balance (in shares) at Jul. 31, 2011		41,084,000
Redeemable convertible preferred stock,ending balance at Jul. 31, 2011		$ 64,491
Common stock, ending balance (in shares) at Jul. 31, 2011	19,751,000
Ending balance at Jul. 31, 2011	$ (71,454)		$ 2	9,309	0	(80,765)
Increase (Decrease) in Stockholders' Equity
Net income (loss)						737
Net income (loss) and other comprehensive income (loss)	737
Other comprehensive loss					0
Stock option exercises, net of unvested portion and excess tax benefit (in shares)			1,044,000
Stock option exercises, net of unvested portion and excess tax benefit	2,422		$ 0	2,422
Share-based compensation for equity based awards	13,837			13,837
Repurchase of unvested restricted common stock from terminated employees (in shares)			(57,000)
Repurchase of unvested restricted common stock from terminated employees	0		$ 0
Proceeds from settlement of note receivable	637			637
Issuance of restricted common stock to employees (in shares)			192,000
Issuance of restricted common stock to employees	0		$ 0
Redeemable convertible preferred stock converted into common stock upon initial public offering (in shares)		(41,305,000)
Redeemable convertible preferred stock converted into common stock upon initial public offering	(67,517)	$ (67,517)
Conversion of redeemable convertible preferred stock into common stock upon initial public offering (in shares)			41,305,000
Conversion of redeemable convertible preferred stock into common stock upon initial public offering	67,517		$ 4	67,513
Issuance of common stock from initial public offering, net of offering costs (in shares)			5,617,000
Issuance of common stock from initial public offering, net of offering costs	$ 215,375		$ 1	215,374
Exercise of preferred stock warrants (in shares)		221,000
Exercise of preferred stock warrants		$ 3,026
Redeemable convertible preferred stock, ending balance (in shares) at Jul. 31, 2012	0	0
Redeemable convertible preferred stock,ending balance at Jul. 31, 2012		$ 0
Common stock, ending balance (in shares) at Jul. 31, 2012	67,852,000
Ending balance at Jul. 31, 2012	$ 229,071		$ 7	309,092	0	(80,028)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(29,246)					(29,246)
Other comprehensive loss	$ (16)				(16)
Stock option exercises, net of unvested portion and excess tax benefit (in shares)	3,627,000		3,627,000
Stock option exercises, net of unvested portion and excess tax benefit	$ 22,640		$ 0	22,640
Share-based compensation for equity based awards	$ 43,704			43,704
Repurchase of unvested restricted common stock from terminated employees (in shares)	(42,000)		(42,000)
Repurchase of unvested restricted common stock from terminated employees	$ 0		$ 0
Issuance of restricted common stock to employees (in shares)			5,000
Issuance of restricted common stock to employees	$ 0		$ 0
Issuance of common stock in connection with employee stock purchase plan (in shares)	170,000		170,000
Issuance of common stock in connection with employee stock purchase plan	$ 6,267		$ 0	6,267
Redeemable convertible preferred stock converted into common stock upon initial public offering	$ 0
Redeemable convertible preferred stock, ending balance (in shares) at Jul. 31, 2013	0	0
Redeemable convertible preferred stock,ending balance at Jul. 31, 2013		$ 0
Common stock, ending balance (in shares) at Jul. 31, 2013	71,612,000
Ending balance at Jul. 31, 2013	$ 272,420		$ 7	$ 381,703	$ (16)	$ (109,274)

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities
Net income (loss)	$ (29,246)	$ 737	$ (12,528)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	9,892	6,134	2,189
Amortization of investment premiums, net of accretion of purchase discounts	1,943	0	0
Share-based compensation for equity based awards	43,704	13,837	4,733
Loss on facility sublease	262	0	0
Excess tax benefit from share-based compensation	(6,762)	(215)	0
Change in fair value of preferred stock warrants	0	958	1,577
Changes in operating assets and liabilities:
Accounts receivable, net	(41,819)	(15,965)	(15,436)
Prepaid expenses and other assets	(8,865)	(11,063)	(5,114)
Accounts payable	5,830	3,779	2,734
Accrued and other liabilities	26,158	9,912	6,340
Deferred revenue	113,422	68,553	43,134
Reimbursement of cost of leasehold improvements	0	701	4,473
Net cash provided by operating activities	114,519	77,368	32,102
Cash flows from investing activities
Purchase of property, equipment, and other assets	(22,442)	(14,565)	(13,000)
Purchase of investments	(345,324)	0	0
Proceeds from sales of investments	13,491	0	0
Proceeds from maturities of investments	202,710	0	0
Net cash used in investing activities	(151,565)	(14,565)	(13,000)
Cash flows from financing activities
Proceeds from initial public offering, net of offering costs	0	215,375	0
Excess tax benefit from share-based compensation	6,762	215	0
Change in restricted cash	0	1,221	0
Proceeds from exercise of stock options	14,765	1,956	1,775
Proceeds from employee stock purchase plan	6,267	0	0
Proceeds from settlement of note receivable	0	637	895
Payments of initial public offering costs	(2,698)	0	0
Repurchase of restricted common stock from terminated employees	(78)	(82)	(90)
Net cash provided by financing activities	25,018	219,322	2,580
Net increase (decrease) in cash and cash equivalents	(12,028)	282,125	21,682
Cash and cash equivalents—beginning of period	322,642	40,517	18,835
Cash and cash equivalents—end of period	310,614	322,642	40,517
Cash paid for income taxes	304	1,355	32
Cash paid for interest	58	23	25
Conversion of preferred stock into common stock	0	67,517	0
Issuance of preferred stock upon exercise of warrant	$ 0	$ 3,026	$ 0

Description of Business and Summary of Significant Accounting Policies

12 Months Ended

Jul. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Summary of Significant Accounting Policies

Description of Business

Palo Alto Networks, Inc. (the “Company,” “we,” “us,” or “our”), located in Santa Clara, California, was incorporated in March 2005 under the laws of the State of Delaware and commenced operations in April 2005. We offer a next-generation network security platform that allows enterprises, service providers, and government entities to secure their networks and safely enable the increasingly complex and rapidly growing number of applications running on their networks. The core of our platform is our Next-Generation Firewall that delivers application, user, and content visibility and control integrated within the firewall through our proprietary operating system, hardware, and software architecture. We primarily sell our products and services to end-customers through our channel partners and infrequently directly to end-customers. Our partners are supported by our sales and marketing organization in the Americas, in Europe, the Middle East, and Africa (EMEA), and in Asia Pacific and Japan (APAC).

Basis of Presentation and Consolidation

The accompanying consolidated financial statements, which include the Company and its wholly owned subsidiaries, have been prepared in conformity with U.S. generally accepted accounting principles. All significant intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Such management estimates include the best estimate of selling price for our products and services, share-based compensation, future taxable income, contract manufacturer liabilities, litigation and settlement costs and other loss contingencies, and warranty liabilities. We base our estimates on historical experience and also on assumptions that we believe are reasonable. Actual results could differ materially from those estimates.

Concentrations

Financial instruments that subject us to concentrations of credit risk consist primarily of cash, cash equivalents, investments, and accounts receivable. The Company invests only in high-quality credit instruments and maintains its cash, cash equivalents and available-for-sale investments in fixed income securities. Management believes that the financial institutions that hold our investments are financially sound and, accordingly, are subject to minimal credit risk. Deposits held with banks may exceed the amount of insurance provided on such deposits.

Our accounts receivables are primarily derived from our channel partners representing various geographical locations. We perform ongoing credit evaluations of our channel partners and generally do not require collateral on accounts receivable. We maintain an allowance for doubtful accounts for estimated potential credit losses. As of July 31, 2013, four partners represented 38%, 16%, 11%, and 11% of our gross accounts receivable. For fiscal 2013, three partners represented 30%, 20%, and 14% of our total revenue. We rely on an independent contract manufacturer to assemble all of our products and sole suppliers for a certain number of our components.

Comprehensive Income (Loss)

Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss). Unrealized gains and losses on available-for-sale investments are included in our other comprehensive income or loss.

Foreign Currency Transactions

The functional currency of our foreign subsidiaries is the U.S. dollar. Monetary assets and liabilities denominated in foreign currencies have been remeasured into U.S. dollars using the exchange rates in effect at the balance sheet dates. Foreign currency denominated income and expenses have been remeasured using the average exchange rates in effect during each period. Foreign currency remeasurement gains and losses and foreign currency transaction gains and losses are not significant to the financial statements.

Cash and Cash Equivalents

We consider all highly liquid investments held at financial institutions, such as commercial paper, money market funds, and other money market securities with original maturities of three months or less at date of purchase to be cash equivalents.

Fair Value of Financial Instruments

We define fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities which are required to be recorded at fair value, we consider the principal or most advantageous market in which to transact and the market-based risk. We apply fair value accounting for all financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The carrying amounts reported in the consolidated financial statements approximate the fair value for cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities, due to their short-term nature.

Investments

We classify our investments as available-for-sale at the time of purchase since it is our intent that these investments are available for current operations, and include these investments on our balance sheet as either short-term or long-term investments depending on their maturity. Investments not considered cash equivalents and with maturities one year or less from the consolidated balance sheet date are classified as short-term investments. Investments with maturities greater than one year from the consolidated balance sheet date are classified as long-term investments.

Investments are considered impaired when a decline in fair value is judged to be other-than-temporary. We consult with our investment managers and consider available quantitative and qualitative evidence in evaluating potential impairment of our investments on a quarterly basis. If the cost of an individual investment exceeds its fair value, we evaluate, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and our intent and ability to hold the investment. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis in the investment is established.

Accounts Receivable

Trade accounts receivable are recorded at the invoiced amount, net of allowances for doubtful accounts. The allowance for doubtful accounts is based on our assessment of the collectability of accounts. Management regularly reviews the adequacy of the allowance for doubtful accounts by considering the age of each outstanding invoice, each partner’s expected ability to pay, and the collection history with each partner, when applicable, to determine whether a specific allowance is appropriate. Accounts receivable deemed uncollectible are charged against the allowance for doubtful accounts when identified. As of July 31, 2013 and 2012, the allowance for doubtful accounts activity was not significant.

Property and Equipment

Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, generally one to seven years. Leasehold improvements are depreciated over the shorter of the estimated useful lives of the improvements or the remaining lease term.

Impairment of Long-Lived Assets

We evaluate events and changes in circumstances that could indicate carrying amounts of long-lived assets, including property and equipment, may not be recoverable. When such events or changes in circumstances occur, we assess the recoverability of long-lived assets by determining whether or not the carrying value of such assets will be recovered through undiscounted expected future cash flows. If the total of the future undiscounted cash flows is less than the carrying amount of an asset, we record an impairment charge for the amount by which the carrying amount of the assets exceeds the fair value of the asset. Through July 31, 2013, our impairment write-down of long-lived assets was not material.

Warranties

We generally provide a one-year warranty on hardware and a three-month warranty on software. We are indemnified by our contract manufacturer for product liability claims arising out of manufacturing defects. We accrue for potential warranty claims as a component of cost of product revenues based on historical experience and other data. Accrued warranty is recorded in accrued liabilities on the consolidated balance sheets and is reviewed periodically for adequacy. To date, we have not accrued any significant costs associated with our warranty.

Contract Manufacturer Liabilities

We outsource most of our manufacturing, repair, and supply chain management operations to our independent contract manufacturer and payments to it are a significant portion of our product cost of revenues. Although we could be contractually obligated to purchase manufactured products, we generally do not own the manufactured products. Product title transfers from our independent contract manufacturer to us and immediately to our partners upon shipment. Our independent contract manufacturer assembles our products using design specifications, quality assurance programs, and standards that we establish and it procures components and assembles our products based on our demand forecasts. These forecasts represent our estimates of future demand for our products based upon historical trends and analysis from our sales and product management functions as adjusted for overall market conditions. If the actual component usage and product demand are significantly lower than forecast, we accrue for costs for contractual manufacturing commitments in excess of our forecasted demand including costs for excess components or for carrying costs incurred by our contract manufacturer. To date, we have not accrued any significant costs associated with this exposure.

Revenue Recognition

We generate revenue from the sales of hardware and software products, subscriptions, support and maintenance, and other services primarily through a direct sales force and indirect relationships with our partners.

Revenue is recognized when all of the following criteria are met:


•	Persuasive Evidence of an Arrangement Exists. We rely upon non-cancelable sales agreements and purchase orders to determine the existence of an arrangement.


•	Delivery has Occurred. We use shipping documents or transmissions of product or service contract registration codes to determine delivery.


•	The Fee is Fixed or Determinable. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction.

•Collectability is Reasonably Assured. We assess collectability based on credit analysis and payment history.

We recognize product revenue at the time of shipment provided that all other revenue recognition criteria have been met. Our partners generally receive an order from an end-customer prior to placing an order with us. In addition, payment from our partners is not contingent on the partner’s success in sales to end-customers. Our partners generally do not stock appliances and only have limited stock rotation rights and no price protection rights. When necessary, we make certain estimates and maintain allowances for sales returns and other programs based on our historical experience. To date, these estimates have not been significant. We recognize services revenue from subscriptions and support and maintenance ratably over the contractual service period, which is typically one to five years. Other services revenue is recognized as the services are rendered and has not been significant to date.

Most of our arrangements, other than renewals of subscriptions and support and maintenance, are multiple-element arrangements with a combination of hardware, software, subscriptions, support and maintenance, and other services. Products and services generally qualify as separate units of accounting. Our hardware deliverables typically include proprietary operating system software, which together deliver the essential functionality of our products. For multiple-element arrangements, we allocate revenue to each unit of accounting based on an estimated selling price at the arrangement inception. The estimated selling price for each element is based upon the following hierarchy: vendor-specific objective evidence (VSOE) of selling price, if available, third-party evidence (TPE) of selling price, if VSOE of selling price is not available, or best estimate of selling price (BESP), if neither VSOE of selling price nor TPE of selling price are available. The total arrangement consideration is allocated to each separate unit of accounting using the relative estimated selling prices of each unit based on the aforementioned selling price hierarchy. We limit the amount of revenue recognized for delivered elements to an amount that is not contingent upon future delivery of additional products or services or meeting of any specified performance conditions.

To determine the estimated selling price in multiple-element arrangements, we establish VSOE of selling price using the prices charged for a deliverable when sold separately. If VSOE of selling price cannot be established for a deliverable, we establish TPE of selling price by evaluating similar and interchangeable competitor products or services in standalone arrangements with similarly situated partners. However, as our products contain a significant element of proprietary technology and offer substantially different features and functionality from our competitors, we are unable to obtain comparable pricing of our competitors’ products with similar functionality on a standalone basis. Therefore, we have not been able to obtain reliable evidence of TPE of selling price. If neither VSOE nor TPE of selling price can be established for a deliverable, we establish BESP primarily based on historical transaction pricing. Historical transactions are segregated based on our pricing model and our go-to-market strategy, which include factors such as type of sales channel (reseller, distributor, or end-customer), the geographies in which our products and services were sold (domestic or international), offering type (products or services), and whether or not the opportunity was identified by our sales force or by our partners. In analyzing historical transaction pricing we evaluate whether a majority of the prices charged for a product or service, as represented by a percentage of list price, fall within a reasonable range. To further support the best estimate of selling price as determined by the historical transaction pricing or when such information is unavailable, such as when there are limited sales of a new product or service, we consider the same factors we have established through our pricing model and go-to-market strategy. The determination of BESP is made through consultation with and approval by our management.

In multiple element arrangements where software deliverables are included, revenue is allocated to each separate unit of accounting for each of the non-software deliverables and to the software deliverables as a group using the relative estimated selling prices of each of the deliverables in the arrangement based on the aforementioned estimated selling price hierarchy. The arrangement consideration allocated to the software deliverables as a group is then allocated to each software deliverable using the residual method when VSOE of fair value of the undelivered items exists. Under the residual method, the amount of revenue allocated to delivered elements equals the total arrangement consideration less the aggregate fair value of any undelivered elements. In determining VSOE of fair value, we evaluate whether a substantial majority of the historical prices charged for a product or service sold on a standalone basis, as represented by a percentage of list price, fall within a reasonably narrow range. If VSOE of fair value of one or more undelivered items does not exist, revenue from the entire arrangement is deferred and recognized at the earlier of: (i) delivery of those elements or (ii) when fair value can be established unless support and maintenance is the only undelivered element, in which case, the entire arrangement fee is recognized ratably over the contractual service period.

We account for multiple agreements with a single partner as one arrangement if the contractual terms and/or substance of those agreements indicate that they may be so closely related that they are, in effect, parts of a single arrangement.

Revenues are reported net of sales taxes. Shipping charges billed to partners are included in revenues and related costs are included in cost of revenue. Sales commissions and other incremental costs to acquire contracts are also expensed as incurred. After receipt of a partner order, any amounts billed in excess of revenue recognized are recorded as deferred revenue.

Advertising Costs

Advertising costs, which are expensed and included in sales and marketing expense when incurred, were $1,808,000, $1,604,000, and $757,000 during the years ended July 31, 2013, 2012, and 2011, respectively.

Software Development Costs

Internally developed software includes enterprise-level business software that we are customizing to meet our specific operational needs. We capitalized a total of $4,877,000 and $3,226,000 during the years ended July 31, 2013 and 2012, respectively. These capitalized costs consisted of the external direct costs and the internal payroll and payroll related costs that are related to the implementation of our enterprise resource planning software system and will be amortized over a useful life of five years. Through July 31, 2013, we recognized amortization expense of $978,000.

The costs to develop software that is marketed externally have not been capitalized as we believe our current software development process is essentially completed concurrent with the establishment of technological feasibility. As such, all related software development costs are expensed as incurred and included in research and development expense on the consolidated statements of operations.

Share-Based Compensation

Compensation expense related to share-based transactions, including employee and non-employee director awards, is measured and recognized in the financial statements based on fair value on the grant date. The fair value of restricted stock units (RSUs) is based on the closing market price of our common stock on the date of grant. The fair value of option awards and purchases under the 2012 Employee Stock Purchase Plan (2012 ESPP) is estimated using the Black-Scholes option-pricing model. This model requires the input of the fair value of our common stock and that at the date of grant we determine the expected term of the award, the expected volatility of the price of our common stock, risk-free interest rates, and expected dividend yield of our common stock. The share-based compensation expense, net of forfeitures, is recognized using a straight-line basis over the requisite service periods of the awards. We estimate a forfeiture rate to calculate the share-based compensation expense for our awards. Our forfeiture rate is based on an analysis of our actual historical forfeitures.

Income Taxes

We account for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized.

We apply the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. We recognize liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax liability as the largest amount that is more likely than not to be realized upon ultimate settlement.

Loss Contingencies

We are subject to the possibility of various loss contingencies arising in the ordinary course of business. We consider the likelihood of loss or impairment of an asset, or the incurrence of a liability, as well as our ability to reasonably estimate the amount of loss, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. If we determine that a loss is possible and the range of the loss can be reasonably determined, then we disclose the range of the possible loss. We regularly evaluate current information available to us to determine whether an accrual is required, an accrual should be adjusted or a range of possible loss should be disclosed.

Recent Accounting Pronouncements

In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2011-05, Presentation of Comprehensive Income. The standard requires entities to have more detailed reporting of comprehensive income. The guidance was effective for us in the first quarter of fiscal 2013 and applied retrospectively. Our adoption of this guidance did not impact our consolidated financial position, results of operations, or cash flows.

In February 2013, the FASB issued Accounting Standards Update No. 2013-02, Comprehensive Income (Topic 220)-Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The standard requires entities to present (either on the face of the income statement or in the notes) the effects on the line items of the income statement for amounts reclassified out of accumulated other comprehensive income. The guidance is effective for us in the first quarter of fiscal 2014 and should be applied prospectively. Early adoption is permitted. We believe that adoption of this guidance will not have a material impact on our consolidated financial position, results of operations, or cash flows.

Fair Value Measurements

12 Months Ended

Jul. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

We categorize assets and liabilities recorded at fair value on our consolidated balance sheets based upon the level of judgment associated with inputs used to measure their fair value. The categories are as follows:


•	Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.


•	Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments.


•	Level 3—Inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation.

The following table presents the fair value of our financial assets and liabilities using the above input categories (in thousands):



	July 31, 2013								July 31, 2012
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Certificates of deposit	$	1,822	$	—	$	—	$	1,822	$	—	$	—	$	—	$	—
U.S. government and agency securities	—		46,700		—		46,700		—		—		—		—
Money market funds	131,845		—		—		131,845		250,005		—		—		250,005
Total cash equivalents	133,667		46,700		—		180,367		250,005		—		—		250,005
Short-term investments:
Corporate debt securities	—		32,834		—		32,834		—		—		—		—
U.S. government and agency securities	—		76,173		—		76,173		—		—		—		—
Total short-term investments	—		109,007		—		109,007		—		—		—		—
Long-term investments:
Corporate debt securities	—		12,317		—		12,317		—		—		—		—
U.S. government and agency securities	—		4,997		—		4,997		—		—		—		—
Total long-term investments	—		17,314		—		17,314		—		—		—		—
Other assets:
Restricted cash	1,221		—		—		1,221		1,221		—		—		1,221
Total other assets	1,221		—		—		1,221		1,221		—		—		1,221
Total assets measured at fair value	$	134,888	$	173,021	$	—	$	307,909	$	251,226	$	—	$	—	$	251,226

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investments

12 Months Ended

Jul. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Investments

The following table summarizes the unrealized gains and losses and fair value of our investments designated as available-for-sale securities as of July 31, 2013 (in thousands):



	July 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Certificates of deposit	$	1,822	$	—	$	—		$	1,822
Corporate debt securities	45,173		12		(34		)	45,151
U.S. government and agency securities	127,864		8		(2		)	127,870
Money market funds	131,845		—		—			131,845
Total	$	306,704	$	20	$	(36	)	$	306,688

The following table presents our available-for-sale investments that were in an unrealized loss position as of July 31, 2013 (in thousands):



	Less Than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate debt securities	$	31,429	$	(34	)	$	—	$	—	$	31,429	$	(34	)
U.S. government and agency securities	15,926		(2		)	—		—		15,926		(2		)
Total	$	47,355	$	(36	)	$	—	$	—	$	47,355	$	(36	)

Unrealized losses related to these investments are due to interest rate fluctuations as opposed to changes in credit quality. In addition, we do not intend to sell and it is not more likely than not that we would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity. As a result, there is no other-than-temporary impairment for these investments at July 31, 2013.

The amortized cost and fair value of our investments at July 31, 2013, by contractual years-to-maturity, are as follows (in thousands):



	Amortized Cost		Fair Value
Due within one year	$	157,515	$	157,529
Due within one to two years	17,344		17,314
Instruments not due at a single maturity date	131,845		131,845
Total	$	306,704	$	306,688

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-Glossary Debt Security
-URI http://asc.fasb.org/extlink&oid=6509901

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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3, 19, 20, 21, 22, 137
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Intangible Assets

12 Months Ended

Jul. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible assets included in other assets consisted of the following (in thousands):



	July 31,
	2013			2012
Acquired intellectual property	$	1,546		$	546
Less: amortization	(188		)	(63		)
Total	$	1,358		$	483

Amortization expense was $125,000, $39,000 and $12,000 for the years ended July 31, 2013, 2012 and 2011, respectively.

The following table summarizes estimated future amortization expense of intangible assets as of July 31, 2013 (in thousands):



	Amount
Years ending July 31:
2014	$	227
2015	227
2016	227
2017	208
2018	110
2019 and thereafter	359
Total	$	1,358

Other Financial Information

12 Months Ended

Jul. 31, 2013

Other Financial Information [Abstract]

Other Financial Information

Property and equipment, net consisted of the following (in thousands):



	July 31,
	2013			2012
Computers, equipment, and software	$	27,239		$	12,016
Demonstration units	11,401			8,440
Leasehold improvements	10,176			8,913
Furniture and fixtures	2,746			2,436
Total property and equipment	51,562			31,805
Less: accumulated depreciation and amortization	(19,476		)	(10,826		)
Total property and equipment, net	$	32,086		$	20,979

Depreciation and amortization expense related to property and equipment during the years ended July 31, 2013, 2012 and 2011 was $9,786,000, $6,057,000, and $2,167,000, respectively.

Accrued and other liabilities consisted of the following (in thousands):



	July 31,
	2013		2012
Accrued expenses payable	$	11,144	$	11,497
Accrued taxes	2,609		1,168
Other liabilities	856		2,524
Total accrued and other liabilities	$	14,609	$	15,189

Commitments and Contingencies

12 Months Ended

Jul. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Leases

We lease our facilities under various non-cancelable operating leases, which expire through the year ending July 31, 2023.

In September 2012, we entered into two lease agreements for an aggregate of approximately 300,000 square feet of space in Santa Clara, California to serve as our new corporate headquarters beginning in November 2013. The leases have inception dates of November 2012 and August 2013, expire in July 2023, and allow for two separate five-year options to extend the lease term. Payments under these leases will be approximately $94,400,000 over the lease term. Each lease has a rent holiday, which was included in the determination of rent expense.

In July 2013, we entered into a 51-month sub-lease agreement for our current corporate headquarters with a lease inception date of January 2014. Payments under this sub-lease will be approximately $10,700,000 over the lease term. The sub-lease agreement contains a rent credit of $524,000, which was included in the determination of rental income.

Rent expense was $4,356,000, $2,258,000, and $1,393,000 for the years ended July 31, 2013, 2012 and 2011, respectively. Rent expense is recognized using the straight-line method over the term of the lease.

The aggregate future non-cancelable minimum rental payments on our operating leases, as of July 31, 2013, are as follows (in thousands):



	Amount
Years ending July 31:
2014	$	7,728
2015	12,152
2016	12,482
2017	12,224
2018	11,427
2019 and thereafter	52,300
Committed gross lease payments	108,313
Less: proceeds from sublease rental	(10,700		)
Net operating lease obligation	$	97,613

Contract Manufacturer Commitments

Our independent contract manufacturer procures components and assembles our products based on our forecasts. These forecasts are based on estimates of future demand for our products, which are in turn based on historical trends and an analysis from our sales and product marketing organizations, adjusted for overall market conditions. In order to reduce manufacturing lead times and plan for adequate supply, we may issue forecasts and orders for components and products that are non-cancelable. Obligations under contracts that we can cancel without a significant penalty are not included. As of July 31, 2013, we had $19,130,000 of open orders.

Litigation

In December 2011, Juniper Networks, Inc. filed a complaint against us in the United States District Court for the District of Delaware alleging patent infringement. The complaint seeks preliminary and permanent injunctions against infringement, treble damages, and attorney’s fees. On February 9, 2012, we filed a response to the complaint, which denied all claims and asserted that the claimant’s patents were invalid. On February 28, 2012, Juniper filed a motion to strike our defense of invalidity based on the legal doctrine of “assignor estoppel.” On March 23, 2012, we filed a brief in opposition to that motion. Juniper filed a brief in response on April 2, 2012. On August 2, 2012, the District Court issued an order granting Juniper’s motion as to one of the patents in suit (the ’634 patent) but denying Juniper’s motion as to the five other patents in suit. On September 4, 2012, Juniper filed a motion to amend its complaint to allege that our appliances infringe two additional U.S. patents but also to withdraw its allegations as to a previously-asserted patent. This amended complaint was officially filed on September 25, 2012, pursuant to a stipulation between the parties. Juniper now alleges that our appliances infringe seven of its patents. On September 13, 2012, we filed with the U.S. Patent and Trademark Office requests for inter partes reexamination of five of the six patents asserted by Juniper in its original complaint. We did not file a request for reexamination on the withdrawn patent. On October 12, 2012, we filed an answer to Juniper’s amended complaint, which denied that we infringed Juniper’s patents and asserted that Juniper’s patents were invalid. On October 19 and December 3, 2012, the U.S. Patent and Trademark Office granted our requests for reexamination for three patents, rejecting a number of the claims asserted in the litigation, and on November 15 and 26, 2012, the U.S. Patent and Trademark Office denied our requests for reexamination as to two other patents. We have the opportunity to seek review of these denials within the U.S. Patent and Trademark Office. Each party served its opening expert report on April 12, 2013, and rebuttal expert report on May 13, 2013, and supplemental expert reports on June 11, 2013. The parties filed opening and responsive briefs regarding claim construction, filed their opening summary judgment briefs on August 20, 2013, and filed opposition briefs and additional summary judgment motions on September 12, 2013. On June 20, 2013 and July 23, 2013, we filed with the U.S. Patent and Trademark Office petitions for inter partes review for two other patents asserted by Juniper in the litigation. The Patent and Trademark Office has not yet ruled on those petitions. A hearing to resolve claim construction issues, as well as motions for summary judgment, is scheduled to be heard on November 15, 2013.

A trial date has been scheduled for February 24, 2014, and we are vigorously defending ourselves from such claims. At this stage in the litigation we do not believe that a loss is probable and we are unable to estimate a possible loss or range of possible loss.

In addition to the above matter, we are subject to legal proceedings, claims, and litigation arising in the ordinary course of business, including intellectual property litigation. Such matters are subject to many uncertainties and outcomes are not predictable with assurance. We accrue for contingencies when we believe that a loss is probable and that we can reasonably estimate the amount of any such loss. We have made an assessment of the probability of incurring any such losses and whether or not those losses are estimable.

To the extent there is a reasonable possibility that a loss exceeding amounts already recognized may be incurred and the amount of such additional loss would be material, we will either disclose the estimated additional loss or state that such an estimate cannot be made.

Indemnification

Under the indemnification provisions of our standard sales related contracts, we agree to defend our end-customers against third-party claims asserting infringement of certain intellectual property rights, which may include patents, copyrights, trademarks, or trade secrets, and to pay judgments entered on such claims. Our exposure under these indemnification provisions is generally limited to the total amount paid by our end-customer under the agreement. However, certain agreements include indemnification provisions that could potentially expose us to losses in excess of the amount received under the agreement. In addition, we indemnify our officers, directors, and certain key employees while they are serving in good faith in their company capacities. To date, there have been no claims under any indemnification provisions.

- Definition

The entire disclosure for commitments and contingencies.

+ References

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-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stockholders' Equity (Deficit)	12 Months Ended
Stockholders' Equity (Deficit)	Jul. 31, 2013
Stockholders' Equity Note [Abstract]
Stockholders’ Equity (Deficit)	Stockholders’ Equity (Deficit) In July 2012, we completed our initial public offering whereby 6,200,000 shares of common stock were sold to the public at a price of $42.00 per share. We sold 4,687,000 common shares and selling stockholders sold 1,513,000 common shares. In connection with the exercise of the underwriters’ over-allotment option, 930,000 additional shares of common stock were sold to the public at the initial offering price of $42.00 per share. We received aggregate proceeds of $219,400,000 from the initial public offering and the underwriters’ over-allotment option, net of underwriters’ discounts and commissions, but before deducting offering expenses of approximately $4,000,000. As of July 31, 2012 unpaid offering expenses have been accrued against the proceeds and are presented as a reduction of proceeds from our initial public offering, net of offering costs in the consolidated financial statements. Upon the closing of the initial public offering, all shares of our outstanding redeemable convertible preferred stock automatically converted into 41,305,000 shares of common stock. In October 2012, we completed our secondary offering whereby certain stockholders of our company sold 4,800,000 shares of common stock to the public at a price of $63.00 per share. The aggregate offering price for shares sold in the offering was approximately $290,304,000, net of underwriting discounts and commissions. We did not receive any proceeds from the sale of shares in this offering. Offering expenses were paid by the stockholders who sold shares of common stock in the offering.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

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-Name Accounting Research Bulletin (ARB)
-Number 43
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-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Equity Award Plans

12 Months Ended

Jul. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Equity Award Plans

Share-Based Compensation Plans

2012 Equity Incentive Plan

Our 2012 Equity Incentive Plan (2012 Plan) was adopted by our board of directors and approved by the stockholders on June 5, 2012 and was effective one business day prior to the effectiveness of our registration statement for our initial public offering. The 2012 Plan replaced our 2005 Equity Incentive Plan (2005 Plan). Our 2012 Plan provides for the granting of stock options, restricted stock awards, RSUs, stock appreciation rights, performance units, and performance shares to our employees, directors, and consultants.

Awards granted under our 2012 Plan vest over the periods determined by the board of directors, generally four years, and expire no more than ten years after the date of grant. In the case of an incentive stock option granted to an employee, who at the time of grant, owns stock representing more than 10% of the total combined voting power of all classes of stock, the exercise price shall be no less than 110% of the fair value per share on the date of grant, and expire five years from the date of grant, and for options granted to any other employee, the per share exercise price shall be no less than 100% of the fair value per share on the date of grant. In the case of a non-statutory stock option and options granted to consultants, the per share exercise price shall be no less than 100% of the fair value per share on the date of grant. Stock that is purchased prior to vesting is subject to our right of repurchase at any time following termination of the participant.

RSUs generally vest over a period of three to four years from the date of grant. Until vested, RSUs do not have the voting and dividend participation rights of common stock and the shares underlying the awards are not considered issued and outstanding.

A total of 21,205,000 shares of our common stock are reserved for issuance pursuant to the 2012 Plan and includes shares that are (i) reserved but unissued under the 2005 Plan on the effective date of the 2012 Plan or (ii) returned to our 2005 Plan as a result of expiration or termination of options. On the first day of each fiscal year, starting with August 1, 2013, the number of shares in the reserve will increase by the lesser of (i) 8,000,000 shares, (ii) 4.5% of the outstanding shares of common stock on the last day of our immediately preceding fiscal year, or (iii) such other amount as determined by our board of directors.

2012 Employee Stock Purchase Plan

Our 2012 ESPP was adopted by our board of directors and approved by the stockholders on June 5, 2012 and was effective upon completion of our initial public offering.

The 2012 ESPP permits eligible employees to acquire shares of our common stock at 85% of the lower of the fair market value of our common stock on the first trading day of each offering period or on the exercise date. Each offering period will be approximately six months starting on the first trading date on or after March 15 and September 15 of each year, except for the first offering period, which commenced on July 19, 2012 and ended on March 15, 2013. Participants may purchase shares of common stock through payroll deductions of up to 15% of their eligible compensation, subject to purchase limits of 625 shares during a six month period or $25,000 worth of stock for each calendar year.

A total of 829,000 shares of our common stock are available for sale under the 2012 ESPP as of July 31, 2013. On the first day of each fiscal year, starting with August 1, 2013, the number of shares in the reserve will increase by the lesser of (i) 2,000,000 shares, (ii) 1% of the outstanding shares of our common stock on the first day of the fiscal year, or (iii) such other amount as determined by our board of directors.

2005 Plan

Our 2005 Plan was terminated upon the completion of our initial public offering. Awards that were outstanding upon termination remained outstanding pursuant to their original terms.

Stock Option Activities

A summary of the activity under our stock plans and changes during the reporting periods and a summary of information related to options exercisable, vested, and expected to vest are presented below (in thousands, except per share amounts):



	Options Outstanding
	Number of Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2012	14,225		$	9.46	8.3	$	678,248
Options granted	90		55.36
Options forfeited	(655	)	10.71
Options exercised	(3,627	)	4.07
Balance—July 31, 2013	10,033		11.74		7.8	$	373,228
Options vested and expected to vest—July 31, 2013	9,589		$	11.55	7.8	$	358,533
Options exercisable—July 31, 2013	5,125		$	8.06	7.4	$	209,510

The weighted-average fair value of employee options granted for the years ended July 31, 2013, 2012 and 2011 was $26.09, $8.17, and $2.90, respectively. The intrinsic value of employee options exercised for the years ended July 31, 2013, 2012 and 2011 was $186,845,000, $20,334,000, and $3,854,000, respectively. The grant date fair value of employee options vested for the years ended July 31, 2013, 2012 and 2011 was $21,351,000, $6,960,000, and $1,777,000, respectively.

RSUs Activities

A summary of the activity under our stock plans and changes during the reporting periods and a summary of information related to RSUs vested and expected to vest are presented below (in thousands, except per share amounts):



	RSUs Outstanding
	Number of Shares		Weighted- Average Grant-Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2012	—		$	—	0.0	$	—
RSUs granted	2,358		54.51
RSUs vested	(5	)	49.25
RSUs forfeited	(112	)	57.89
Balance—July 31, 2013	2,241		$	54.36	1.5	$	109,675
RSUs vested and expected to vest—July 31, 2013	2,011		$	54.44	1.5	$	98,418

Shares Available for Grant

The following table presents the stock activity and the total number of shares available for grant as of July 31, 2013 (in thousands):



	Number of shares
Balance at beginning of fiscal year	10,571
Options granted	(90	)
RSUs granted	(2,358	)
Repurchased	42
Options forfeited	655
RSUs forfeited	112
Balance at end of fiscal year	8,932

Employee Stock Purchase Plan

During the years ended July 31, 2013 and 2012, compensation expense recognized in connection with the 2012 Employee Stock Purchase Plan (2012 ESPP) was $5,263,000 and $172,000, respectively. Employees purchased approximately 170,000 shares of common stock at an average exercise price of $36.72 during the year ended July 31, 2013.

Share-Based Compensation

We record share-based compensation awards based on fair value as of the grant date. For option awards and ESPP purchases we use the Black-Scholes option-pricing model to determine fair value. We recognize such costs to compensation expense on a straight-line basis over the employee’s requisite service period. The assumptions for our option-pricing model are determined as follows:

Fair Value of Common Stock

Prior to our initial public offering, our board of directors considered numerous objective and subjective factors to determine the fair value of our common stock at each meeting at which awards were approved. These factors included, but were not limited to (i) contemporaneous third-party valuations of common stock; (ii) the rights and preferences of convertible preferred stock relative to common stock; (iii) the lack of marketability of common stock; (iv) developments in the business; and (v) the likelihood of achieving a liquidity event, such as an initial public offering or sale of the Company, given prevailing market conditions.

Risk-Free Interest Rate

We base the risk-free interest rate used in the Black-Scholes valuation model on the implied yield available on U.S. Treasury zero-coupon issues with an equivalent remaining term of the options for each option group.

Expected Term

The expected term represents the period that our share-based awards are expected to be outstanding. We determined the expected term assumption based on the contractual term of the awards adjusted for estimates of our employees' expected exercise and expected post-vesting termination behavior.

Volatility

We determine the price volatility factor based on the historical volatilities of our peer group as we do not have sufficient trading history for our common stock.

Dividend Yield

The expected dividend assumption is based on our current expectations about our anticipated dividend policy.

The following table summarizes the assumptions relating to our stock options:



	Year Ended July 31,
	2013	2012	2011
Risk-free interest rate	1.0%	0.7% - 1.1%	0.8% - 1.8%
Expected term	6 years	4 – 6 years	4 years
Volatility	50%	49% – 51%	49%
Dividend yield	—%	—%	—%

The following table summarizes the assumptions related to the 2012 ESPP:



	Year Ended July 31,
	2013	2012
Risk-free interest rate	0.1%	0.1%
Expected term	< 1 year	< 1 year
Volatility	42%	46%
Dividend yield	—%	—%

Share-based compensation expense is included in costs and expenses as follows (in thousands):



	Year Ended July 31,
	2013		2012		2011
Cost of revenue	$	4,351	$	774	$	206
Research and development	9,931		3,733		1,020
Sales and marketing	20,493		4,267		1,133
General and administrative	9,101		5,151		2,374
Total	$	43,876	$	13,925	$	4,733

For fiscal 2013, we modified the terms of certain share-based awards for a former employee and as a result, we recorded $1,861,000 of compensation expense within sales and marketing expense.

For fiscal 2012, we modified the terms of certain share-based awards for a former employee and as a result, we recorded $854,000 of compensation expense within research and development expense.

For fiscal 2011, we modified the terms of certain share-based awards for a former employee and as a result, we recorded $1,626,000 of compensation expense within general and administrative expense.

At July 31, 2013, total compensation cost related to unvested share-based awards granted to employees under our stock plans but not yet recognized was $133,563,000, net of estimated forfeitures. This cost is expected to be amortized on a straight-line basis over a weighted-average period of three years. Future grants will increase the amount of compensation expense to be recorded in these periods.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes

12 Months Ended

Jul. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income (loss) before provision for income taxes consisted of the following (in thousands):



	Year Ended July 31,
	2013			2012		2011
United States	$	5,198		$	1,646	$	(12,654	)
Foreign	(23,854		)	1,153		602
Total	$	(18,656	)	$	2,799	$	(12,052	)

The provision for income taxes consisted of the following (in thousands):



	Year Ended July 31,
	2013			2012		2011
Federal:
Current	$	5,883		$	525	$	—
Deferred	—			—		—
State:
Current	1,758			647		24
Deferred	—			—		—
Foreign:
Current	3,296			861		490
Deferred	(347		)	29		(38		)
Total	$	10,590		$	2,062	$	476

The items accounting for the difference between income taxes computed at the federal statutory income tax rate and the provision for income taxes consisted of the following:



	Year Ended July 31,
	2013		2012		2011
Federal statutory rate	35.0	%	34.0	%	34.0	%
Effect of:
State taxes, net of federal tax benefit	1.0		9.7		4.6
Change in valuation allowance	(7.3	)	(85.4	)	(26.9	)
Foreign income at other than U.S. rates	(62.4	)	17.2		(1.8	)
Share-based compensation	(16.1	)	66.6		(6.9	)
Preferred stock warrant liability	—		12.3		(5.0	)
Meals and entertainment	(2.0	)	11.9		(1.5	)
Other, net	(5.0	)	7.4		(0.4	)
Total	(56.8	)%	73.7	%	(3.9	)%

The components of the deferred tax assets and liabilities are as follows (in thousands):



	July 31,
	2013			2012
Deferred tax assets:
Accruals and reserves	$	23,461		$	12,065
Research and development and foreign tax credits	4,702			3,911
Net operating loss carryforwards	2,170			10,632
Share-based compensation	10,619			2,956
Gross deferred tax assets	40,952			29,564
Valuation allowance	(37,659		)	(29,555		)
Total deferred tax assets	3,293			9
Deferred tax liabilities	(2,937		)	—
Total	$	356		$	9

A valuation allowance is provided when it is more likely than not that the deferred tax asset will not be realized. Realization of the deferred tax assets is dependent upon future taxable income, if any, the amount and timing of which are uncertain. At such time, if it is determined that it is more likely than not that the deferred tax assets are realizable, the valuation allowance will be adjusted. As of July 31, 2013, we have provided a valuation allowance for our federal and state deferred tax assets that we believe are more likely than not unrealizable. The net valuation allowance increased by approximately $8,104,000 during fiscal 2013. As of July 31, 2013, we had federal and state net operating loss carryforwards of approximately nil and $37,363,000, respectively, available to reduce future taxable income, if any. If not utilized, the state net operating loss carryforwards will begin to expire from the years ending July 31, 2017 through 2030.

We also have federal and state research and development tax credit carryforwards of approximately $100,000 and $4,577,000, respectively. If not utilized, the federal credit carryforwards will expire in various amounts from the years ended July 31, 2026 through 2033. The state credit will carry forward indefinitely.

Utilization of the net operating loss carryforwards and credits may be subject to a substantial annual limitation due to the ownership change limitations provided by the Internal Revenue Code of 1986, as amended, and similar state provisions. The annual limitation may result in the expiration of net operating losses and credits before utilization.

We use the with-and-without approach described in guidance which has been incorporated into ASC 740 Income Taxes to determine the recognition and measurement of excess tax benefits. Accordingly, we have elected to recognize excess income tax benefits from share-based awards in additional paid-in capital only if an incremental income tax benefit would be realized after considering all other tax attributes presently available to us. As of July 31, 2013, the amount of excess tax benefits from stock options included in federal and state net operating losses is $63,915,000 and $112,377,000, respectively. The impact of this excess tax benefit is recognized as additional paid-in capital when it reduces taxes payable. In addition, we have elected to account for the indirect effects of share-based awards on other tax attributes, such as the research, foreign and other tax credits, through the consolidated statement of operations.

As of July 31, 2013, we had $6,561,000 of unrecognized tax benefits, all of which would affect income tax expense if recognized, before consideration of our valuation allowance. As of July 31, 2013, our federal, state, and foreign returns for the tax years 2008 through the current period are still open to examination. We do not expect the unrecognized tax benefits to change significantly over the next 12 months. We recognize both interest and penalties associated with uncertain tax positions as a component of income tax expense. As of July 31, 2013 and 2012, we recognized interest and penalties of $294,000 and $72,000, respectively. The ultimate amount and timing of any future cash settlements cannot be predicted with reasonable certainty.

A reconciliation of the gross unrecognized tax benefit is as follows (in thousands):



	Year Ended July 31,
	2013			2012		2011
Unrecognized tax benefits at the beginning of the period	$	2,630		$	1,972	$	1,061
Additions for tax positions taken in prior years	585			9		320
Reductions for tax positions taken in prior years	(3		)	—		—
Additions for tax positions related to the current year	3,349			649		591
Settlements	—			—		—
Lapse of statute of limitations	—			—		—
Unrecognized tax benefits at the end of the period	$	6,561		$	2,630	$	1,972

As of July 31, 2013, we have not made any tax provision for U.S. federal and state income taxes on approximately $5,208,000 of undistributed earnings in foreign subsidiaries, which we expect to reinvest outside of the U.S. indefinitely. If we were to repatriate these earnings to the U.S., we would be subject to U.S. income taxes, an adjustment for foreign tax credits, and foreign withholding taxes. The amount of unrecognized deferred tax liability was not significant.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Net Income (Loss) Per Share

12 Months Ended

Jul. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

We compute net income (loss) per share of common stock using the two-class method required for participating securities. Immediately prior to the completion of our initial public offering on July 19, 2012, all shares of outstanding redeemable convertible preferred stock were automatically converted to common stock. Prior to their conversion, we considered all series of our redeemable convertible preferred stock to be participating securities as the holders were entitled to participate in common stock dividends with common stock on an as-converted basis. The holders of our redeemable convertible preferred stock were also entitled to non-cumulative dividends prior and in preference to common stock and did not have a contractual obligation to share in the losses of the Company. Additionally, we consider shares issued upon the early exercise of options subject to repurchase and unvested restricted shares to be participating securities because holders of such shares have non-forfeitable dividend rights in the event of our declaration of a dividend for common shares. In accordance with the two-class method, earnings allocated to these participating securities, which include participation rights in undistributed earnings with common stock, are subtracted from net income to determine net income (loss) attributable to common stockholders.

Basic net income (loss) per common share is computed by dividing net income (loss) attributable to common stockholders by basic weighted-average shares outstanding during the period. All participating securities are excluded from basic weighted-average shares outstanding. In computing diluted net income (loss) attributable to common stockholders, undistributed earnings are re-allocated to reflect the potential impact of dilutive securities. Diluted net income (loss) per share attributable to common stockholders is computed by dividing net income (loss) attributable to common stockholders by diluted weighted-average shares outstanding, including potentially dilutive securities.

The following table presents the computation of basic and diluted net income (loss) per share of common stock (in thousands, except per share data):



	Year Ended July 31,
	2013			2012			2011
Net income (loss) used to compute net income (loss) per share:
Net income (loss)	$	(29,246	)	$	737		$	(12,528	)
Less: undistributed earnings allocated to participating securities	—			(737		)	—
Net income (loss) attributable to common stockholders, basic and diluted	$	(29,246	)	$	—		$	(12,528	)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders:
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic and diluted	68,682			19,569			14,201
Net income (loss) per share attributable to common stockholders, basic and diluted	$	(0.43	)	$	0.00		$	(0.88	)

The following outstanding options, RSUs, ESPP shares, warrants to purchase redeemable convertible preferred stock, and redeemable convertible preferred stock were excluded from the computation of diluted net income (loss) per common share applicable to common stockholders for the periods presented as their effect would have been antidilutive (in thousands):



	Year Ended July 31,
	2013	2012	2011
Options	10,033	4,116	8,195
RSUs	2,241	—	—
ESPP shares	114	—	—
Redeemable convertible preferred stock	—	—	41,084
Warrants to purchase redeemable convertible preferred stock	—	—	225

Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Jul. 31, 2013
Employee Benefit Plan [Abstract]
Compensation and Employee Benefit Plans	Employee Benefit Plan We have established a 401(k) tax - deferred savings plan (401(k) Plan) which permits participants to make contributions by salary deduction pursuant to Section 401(k) of the Internal Revenue Code. We are responsible for administrative costs of the 401(k) Plan and have made no contributions to the 401(k) Plan since inception.

Segment Information

12 Months Ended

Jul. 31, 2013

Segment Reporting [Abstract]

Segment Information

We conduct business globally and are primarily managed on a geographic theater basis. Our chief operating decision maker reviews financial information presented on a consolidated basis accompanied by information about revenue by geographic region for purposes of allocating resources and evaluating financial performance. We have one business activity and there are no segment managers who are held accountable for operations, operating results, and plans for levels, components, or types of products or services below the consolidated unit level. Accordingly, we are considered to be in a single reportable segment and operating unit structure.

Revenue by geographic theater based on the billing address of the partner is as follows (in thousands):



	Year Ended July 31,
	2013		2012		2011
Revenue:
Americas
United States	$	228,604	$	151,435	$	69,696
Other Americas	19,012		10,438		3,449
Total Americas	247,616		161,873		73,145
EMEA	91,496		61,994		32,504
APAC	56,995		31,271		12,948
Total revenue	$	396,107	$	255,138	$	118,597

Substantially all of our assets were attributable to the Americas operations as of July 31, 2013 and 2012.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Related Party Transactions	12 Months Ended
Related Party Transactions	Jul. 31, 2013
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Certain members of our board of directors serve as board members or executive officers of certain of our customers and in some cases are also investors of these customers. We believe these transactions with related party customers are carried out on terms that are consistent with similar transactions with our comparable customers. During the year ended July 31, 2013, we recognized revenue of approximately $2,623,000 from sales transactions with significant related party customers. Amounts payable to and due from related party customers were not material at July 31, 2013. We did not have any material sales transactions with related party customers in the year ended July 31, 2012 or 2011.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph b
-Article 3A

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Article 4

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Jul. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

The following tables set forth selected unaudited financial data for the years ended July 31, 2013 and 2012 (in thousands, except per share amounts):



	Three Months Ended
	Oct. 31, 2012			Jan. 31, 2013			Apr. 30, 2013			Jul. 31, 2013
Revenue:
Product	$	55,514		$	61,944		$	60,793		$	65,456
Services	30,420			34,555			40,496			46,929
Total revenue	85,934			96,499			101,289			112,385
Cost of revenue:
Product	14,416			16,636			15,855			16,505
Services	9,774			10,982			11,835			13,753
Total cost of revenue	24,190			27,618			27,690			30,258
Total gross profit	61,744			68,881			73,599			82,127
Operating expenses:
Research and development	13,312			15,495			16,048			17,627
Sales and marketing	42,607			45,796			51,733			59,635
General and administrative	8,956			9,747			12,268			11,748
Total operating expenses	64,875			71,038			80,049			89,010
Operating loss	(3,131		)	(2,157		)	(6,450		)	(6,883		)
Interest income	98			116			133			137
Other expense, net	(170		)	(60		)	(157		)	(132		)
Loss before income taxes	(3,203		)	(2,101		)	(6,474		)	(6,878		)
Provision for income taxes	312			512			808			8,958
Net loss	$	(3,515	)	$	(2,613	)	$	(7,282	)	$	(15,836	)
Net loss per share attributable to common stockholders:
Basic	$	(0.05	)	$	(0.04	)	$	(0.10	)	$	(0.22	)
Diluted	$	(0.05	)	$	(0.04	)	$	(0.10	)	$	(0.22	)



	Three Months Ended
	Oct. 31, 2011			Jan. 31, 2012			Apr. 30, 2012			Jul. 31, 2012
Revenue:
Product	$	42,861		$	38,638		$	43,524		$	49,439
Services	14,252			18,045			22,176			26,203
Total revenue	57,113			56,683			65,700			75,642
Cost of revenue:
Product	10,310			10,248			11,524			12,533
Services	4,530			5,265			7,109			9,034
Total cost of revenue	14,840			15,513			18,633			21,567
Total gross profit	42,273			41,170			47,067			54,075
Operating expenses:
Research and development	7,848			8,514			10,462			11,746
Sales and marketing	22,368			25,612			30,216			37,721
General and administrative	5,157			5,768			6,430			8,852
Total operating expenses	35,373			39,894			47,108			58,319
Operating income (loss)	6,900			1,276			(41		)	(4,244		)
Interest income	2			2			3			11
Other expense, net	(464		)	(566		)	(3		)	(77		)
Income (loss) before income taxes	6,438			712			(41		)	(4,310		)
Provision (benefit) for income taxes	2,322			288			(837		)	289
Net income (loss)	$	4,116		$	424		$	796		$	(4,599	)
Net income (loss) per share attributable to common stockholders:
Basic	$	0.00		$	0.00		$	0.00		$	(0.18	)
Diluted	$	0.00		$	0.00		$	0.00		$	(0.18	)

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Subsequent Events	12 Months Ended
Subsequent Events	Jul. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In September 2013 we purchased intangible assets for $5,000,000.

Description of Business and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jul. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

Basis of Presentation and Consolidation

Use of Estimates

Concentrations

Comprehensive Income (Loss)

Foreign Currency Transactions

Cash and Cash Equivalents

Fair Value of Financial Instruments

Investments

Accounts Receivable

Property and Equipment

Impairment of Long-Lived Assets

Warranties

Contract Manufacturer Liabilities

Revenue Recognition

Revenue is recognized when all of the following criteria are met:


•	Persuasive Evidence of an Arrangement Exists. We rely upon non-cancelable sales agreements and purchase orders to determine the existence of an arrangement.


•	Delivery has Occurred. We use shipping documents or transmissions of product or service contract registration codes to determine delivery.


•	The Fee is Fixed or Determinable. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction.

•Collectability is Reasonably Assured. We assess collectability based on credit analysis and payment history.

Advertising Costs

Software Development Costs

Share-Based Compensation

Income Taxes

Loss Contingencies

Recent Accounting Pronouncements

Fair Value Measurements (Tables)

12 Months Ended

Jul. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of fair value of financial assets and liabilities

The following table presents the fair value of our financial assets and liabilities using the above input categories (in thousands):



	July 31, 2013								July 31, 2012
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash equivalents:
Certificates of deposit	$	1,822	$	—	$	—	$	1,822	$	—	$	—	$	—	$	—
U.S. government and agency securities	—		46,700		—		46,700		—		—		—		—
Money market funds	131,845		—		—		131,845		250,005		—		—		250,005
Total cash equivalents	133,667		46,700		—		180,367		250,005		—		—		250,005
Short-term investments:
Corporate debt securities	—		32,834		—		32,834		—		—		—		—
U.S. government and agency securities	—		76,173		—		76,173		—		—		—		—
Total short-term investments	—		109,007		—		109,007		—		—		—		—
Long-term investments:
Corporate debt securities	—		12,317		—		12,317		—		—		—		—
U.S. government and agency securities	—		4,997		—		4,997		—		—		—		—
Total long-term investments	—		17,314		—		17,314		—		—		—		—
Other assets:
Restricted cash	1,221		—		—		1,221		1,221		—		—		1,221
Total other assets	1,221		—		—		1,221		1,221		—		—		1,221
Total assets measured at fair value	$	134,888	$	173,021	$	—	$	307,909	$	251,226	$	—	$	—	$	251,226

- Definition

Tabular disclosure related to assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition. Disclosures include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3) as well as transfers between levels 1 and 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a,b,bb)
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=7578670&loc=SL7498348-110258

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 33
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 6
-Footnote 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investments (Tables)

12 Months Ended

Jul. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Schedule of available-for-sale investments

The following table summarizes the unrealized gains and losses and fair value of our investments designated as available-for-sale securities as of July 31, 2013 (in thousands):



	July 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Certificates of deposit	$	1,822	$	—	$	—		$	1,822
Corporate debt securities	45,173		12		(34		)	45,151
U.S. government and agency securities	127,864		8		(2		)	127,870
Money market funds	131,845		—		—			131,845
Total	$	306,704	$	20	$	(36	)	$	306,688

Schedule of available-for-sale investments in unrealized loss position

The following table presents our available-for-sale investments that were in an unrealized loss position as of July 31, 2013 (in thousands):



	Less Than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate debt securities	$	31,429	$	(34	)	$	—	$	—	$	31,429	$	(34	)
U.S. government and agency securities	15,926		(2		)	—		—		15,926		(2		)
Total	$	47,355	$	(36	)	$	—	$	—	$	47,355	$	(36	)

Contractual maturities of available-for-sale investments

The amortized cost and fair value of our investments at July 31, 2013, by contractual years-to-maturity, are as follows (in thousands):



	Amortized Cost		Fair Value
Due within one year	$	157,515	$	157,529
Due within one to two years	17,344		17,314
Instruments not due at a single maturity date	131,845		131,845
Total	$	306,704	$	306,688

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27198-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19, 20, 21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 17
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-1
-Paragraph 21
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Intangible Assets (Tables)

12 Months Ended

Jul. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Related Amortization

Intangible assets included in other assets consisted of the following (in thousands):



	July 31,
	2013			2012
Acquired intellectual property	$	1,546		$	546
Less: amortization	(188		)	(63		)
Total	$	1,358		$	483

Future Amortization Expense of Intangible Assets

The following table summarizes estimated future amortization expense of intangible assets as of July 31, 2013 (in thousands):



	Amount
Years ending July 31:
2014	$	227
2015	227
2016	227
2017	208
2018	110
2019 and thereafter	359
Total	$	1,358

Other Financial Information (Tables)

12 Months Ended

Jul. 31, 2013

Other Financial Information [Abstract]

Schedule of property and equipment

Property and equipment, net consisted of the following (in thousands):



	July 31,
	2013			2012
Computers, equipment, and software	$	27,239		$	12,016
Demonstration units	11,401			8,440
Leasehold improvements	10,176			8,913
Furniture and fixtures	2,746			2,436
Total property and equipment	51,562			31,805
Less: accumulated depreciation and amortization	(19,476		)	(10,826		)
Total property and equipment, net	$	32,086		$	20,979

Schedule of accrued and other liabilities

Accrued and other liabilities consisted of the following (in thousands):



	July 31,
	2013		2012
Accrued expenses payable	$	11,144	$	11,497
Accrued taxes	2,609		1,168
Other liabilities	856		2,524
Total accrued and other liabilities	$	14,609	$	15,189

Commitments and Contingencies (Tables)

12 Months Ended

Jul. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

The aggregate future non-cancelable minimum rental payments on our operating leases, as of July 31, 2013, are as follows (in thousands):



	Amount
Years ending July 31:
2014	$	7,728
2015	12,152
2016	12,482
2017	12,224
2018	11,427
2019 and thereafter	52,300
Committed gross lease payments	108,313
Less: proceeds from sublease rental	(10,700		)
Net operating lease obligation	$	97,613

Equity Award Plans (Tables)

12 Months Ended

Jul. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock Options Activity



	Options Outstanding
	Number of Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2012	14,225		$	9.46	8.3	$	678,248
Options granted	90		55.36
Options forfeited	(655	)	10.71
Options exercised	(3,627	)	4.07
Balance—July 31, 2013	10,033		11.74		7.8	$	373,228
Options vested and expected to vest—July 31, 2013	9,589		$	11.55	7.8	$	358,533
Options exercisable—July 31, 2013	5,125		$	8.06	7.4	$	209,510

Schedule of Restricted Stock Units Award Activity



	RSUs Outstanding
	Number of Shares		Weighted- Average Grant-Date Fair Value Per Share		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance—July 31, 2012	—		$	—	0.0	$	—
RSUs granted	2,358		54.51
RSUs vested	(5	)	49.25
RSUs forfeited	(112	)	57.89
Balance—July 31, 2013	2,241		$	54.36	1.5	$	109,675
RSUs vested and expected to vest—July 31, 2013	2,011		$	54.44	1.5	$	98,418

Shares Available For Grant

The following table presents the stock activity and the total number of shares available for grant as of July 31, 2013 (in thousands):



	Number of shares
Balance at beginning of fiscal year	10,571
Options granted	(90	)
RSUs granted	(2,358	)
Repurchased	42
Options forfeited	655
RSUs forfeited	112
Balance at end of fiscal year	8,932

Summary of Stock Options, Valuation Assumptions

The following table summarizes the assumptions relating to our stock options:



	Year Ended July 31,
	2013	2012	2011
Risk-free interest rate	1.0%	0.7% - 1.1%	0.8% - 1.8%
Expected term	6 years	4 – 6 years	4 years
Volatility	50%	49% – 51%	49%
Dividend yield	—%	—%	—%

Summary of Employee Stock Purchase Plan, Valuation Assumptions

The following table summarizes the assumptions related to the 2012 ESPP:



	Year Ended July 31,
	2013	2012
Risk-free interest rate	0.1%	0.1%
Expected term	< 1 year	< 1 year
Volatility	42%	46%
Dividend yield	—%	—%

Schedule of Allocation of Share Based Compensation Expense

Share-based compensation expense is included in costs and expenses as follows (in thousands):



	Year Ended July 31,
	2013		2012		2011
Cost of revenue	$	4,351	$	774	$	206
Research and development	9,931		3,733		1,020
Sales and marketing	20,493		4,267		1,133
General and administrative	9,101		5,151		2,374
Total	$	43,876	$	13,925	$	4,733

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References + Details

Income Taxes (Tables)

12 Months Ended

Jul. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

Income (loss) before provision for income taxes consisted of the following (in thousands):



	Year Ended July 31,
	2013			2012		2011
United States	$	5,198		$	1,646	$	(12,654	)
Foreign	(23,854		)	1,153		602
Total	$	(18,656	)	$	2,799	$	(12,052	)

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes consisted of the following (in thousands):



	Year Ended July 31,
	2013			2012		2011
Federal:
Current	$	5,883		$	525	$	—
Deferred	—			—		—
State:
Current	1,758			647		24
Deferred	—			—		—
Foreign:
Current	3,296			861		490
Deferred	(347		)	29		(38		)
Total	$	10,590		$	2,062	$	476

Schedule of Effective Income Tax Rate Reconciliation

The items accounting for the difference between income taxes computed at the federal statutory income tax rate and the provision for income taxes consisted of the following:



	Year Ended July 31,
	2013		2012		2011
Federal statutory rate	35.0	%	34.0	%	34.0	%
Effect of:
State taxes, net of federal tax benefit	1.0		9.7		4.6
Change in valuation allowance	(7.3	)	(85.4	)	(26.9	)
Foreign income at other than U.S. rates	(62.4	)	17.2		(1.8	)
Share-based compensation	(16.1	)	66.6		(6.9	)
Preferred stock warrant liability	—		12.3		(5.0	)
Meals and entertainment	(2.0	)	11.9		(1.5	)
Other, net	(5.0	)	7.4		(0.4	)
Total	(56.8	)%	73.7	%	(3.9	)%

Schedule of Deferred Tax Assets and Liabilities

The components of the deferred tax assets and liabilities are as follows (in thousands):



	July 31,
	2013			2012
Deferred tax assets:
Accruals and reserves	$	23,461		$	12,065
Research and development and foreign tax credits	4,702			3,911
Net operating loss carryforwards	2,170			10,632
Share-based compensation	10,619			2,956
Gross deferred tax assets	40,952			29,564
Valuation allowance	(37,659		)	(29,555		)
Total deferred tax assets	3,293			9
Deferred tax liabilities	(2,937		)	—
Total	$	356		$	9

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the gross unrecognized tax benefit is as follows (in thousands):



	Year Ended July 31,
	2013			2012		2011
Unrecognized tax benefits at the beginning of the period	$	2,630		$	1,972	$	1,061
Additions for tax positions taken in prior years	585			9		320
Reductions for tax positions taken in prior years	(3		)	—		—
Additions for tax positions related to the current year	3,349			649		591
Settlements	—			—		—
Lapse of statute of limitations	—			—		—
Unrecognized tax benefits at the end of the period	$	6,561		$	2,630	$	1,972

Net Income (Loss) Per Share (Tables)

12 Months Ended

Jul. 31, 2013

Earnings Per Share [Abstract]

Computation of basic and diluted net income (loss) per share of common stock

The following table presents the computation of basic and diluted net income (loss) per share of common stock (in thousands, except per share data):



	Year Ended July 31,
	2013			2012			2011
Net income (loss) used to compute net income (loss) per share:
Net income (loss)	$	(29,246	)	$	737		$	(12,528	)
Less: undistributed earnings allocated to participating securities	—			(737		)	—
Net income (loss) attributable to common stockholders, basic and diluted	$	(29,246	)	$	—		$	(12,528	)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders:
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic and diluted	68,682			19,569			14,201
Net income (loss) per share attributable to common stockholders, basic and diluted	$	(0.43	)	$	0.00		$	(0.88	)

Schedule of antidilutive securities excluded from computation of net income (loss) per share



	Year Ended July 31,
	2013	2012	2011
Options	10,033	4,116	8,195
RSUs	2,241	—	—
ESPP shares	114	—	—
Redeemable convertible preferred stock	—	—	41,084
Warrants to purchase redeemable convertible preferred stock	—	—	225

Segment Information Revenue by geographic theater (Tables)

12 Months Ended

Jul. 31, 2013

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Revenue by geographic theater based on the billing address of the partner is as follows (in thousands):



	Year Ended July 31,
	2013		2012		2011
Revenue:
Americas
United States	$	228,604	$	151,435	$	69,696
Other Americas	19,012		10,438		3,449
Total Americas	247,616		161,873		73,145
EMEA	91,496		61,994		32,504
APAC	56,995		31,271		12,948
Total revenue	$	396,107	$	255,138	$	118,597

Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Jul. 31, 2013

Selected Quarterly Financial Information [Abstract]

Schedule of Quarterly Financial Information

The following tables set forth selected unaudited financial data for the years ended July 31, 2013 and 2012 (in thousands, except per share amounts):



	Three Months Ended
	Oct. 31, 2012			Jan. 31, 2013			Apr. 30, 2013			Jul. 31, 2013
Revenue:
Product	$	55,514		$	61,944		$	60,793		$	65,456
Services	30,420			34,555			40,496			46,929
Total revenue	85,934			96,499			101,289			112,385
Cost of revenue:
Product	14,416			16,636			15,855			16,505
Services	9,774			10,982			11,835			13,753
Total cost of revenue	24,190			27,618			27,690			30,258
Total gross profit	61,744			68,881			73,599			82,127
Operating expenses:
Research and development	13,312			15,495			16,048			17,627
Sales and marketing	42,607			45,796			51,733			59,635
General and administrative	8,956			9,747			12,268			11,748
Total operating expenses	64,875			71,038			80,049			89,010
Operating loss	(3,131		)	(2,157		)	(6,450		)	(6,883		)
Interest income	98			116			133			137
Other expense, net	(170		)	(60		)	(157		)	(132		)
Loss before income taxes	(3,203		)	(2,101		)	(6,474		)	(6,878		)
Provision for income taxes	312			512			808			8,958
Net loss	$	(3,515	)	$	(2,613	)	$	(7,282	)	$	(15,836	)
Net loss per share attributable to common stockholders:
Basic	$	(0.05	)	$	(0.04	)	$	(0.10	)	$	(0.22	)
Diluted	$	(0.05	)	$	(0.04	)	$	(0.10	)	$	(0.22	)



	Three Months Ended
	Oct. 31, 2011			Jan. 31, 2012			Apr. 30, 2012			Jul. 31, 2012
Revenue:
Product	$	42,861		$	38,638		$	43,524		$	49,439
Services	14,252			18,045			22,176			26,203
Total revenue	57,113			56,683			65,700			75,642
Cost of revenue:
Product	10,310			10,248			11,524			12,533
Services	4,530			5,265			7,109			9,034
Total cost of revenue	14,840			15,513			18,633			21,567
Total gross profit	42,273			41,170			47,067			54,075
Operating expenses:
Research and development	7,848			8,514			10,462			11,746
Sales and marketing	22,368			25,612			30,216			37,721
General and administrative	5,157			5,768			6,430			8,852
Total operating expenses	35,373			39,894			47,108			58,319
Operating income (loss)	6,900			1,276			(41		)	(4,244		)
Interest income	2			2			3			11
Other expense, net	(464		)	(566		)	(3		)	(77		)
Income (loss) before income taxes	6,438			712			(41		)	(4,310		)
Provision (benefit) for income taxes	2,322			288			(837		)	289
Net income (loss)	$	4,116		$	424		$	796		$	(4,599	)
Net income (loss) per share attributable to common stockholders:
Basic	$	0.00		$	0.00		$	0.00		$	(0.18	)
Diluted	$	0.00		$	0.00		$	0.00		$	(0.18	)

Description of Business and Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Jul. 31, 2013 USD ($)	Jul. 31, 2012 USD ($)	Jul. 31, 2011 USD ($)
Description of Business and Summary of Significant Accounting Policies
Number of partners accounting for 10% or more of accounts receivable	4
Number of customers accounting for 10% or more of total revenue	3
Advertising Expense	$ 1,808	$ 1,604	$ 757
Capitalized Computer Software, Gross	4,877	$ 3,226
Amortization of Intangible Assets	$ 978
Hardware
Description of Business and Summary of Significant Accounting Policies
Product warranty term	1 year
Software
Description of Business and Summary of Significant Accounting Policies
Product warranty term	3 months
Customer A [Member]
Description of Business and Summary of Significant Accounting Policies
Percentage of accounts receivable, major customer	38.00%
Percentage of total revenue, major customer	30.00%
Customer B [Member]
Description of Business and Summary of Significant Accounting Policies
Percentage of accounts receivable, major customer	16.00%
Percentage of total revenue, major customer	14.00%
Customer C [Member]
Description of Business and Summary of Significant Accounting Policies
Percentage of accounts receivable, major customer	11.00%
Customer D [Member]
Description of Business and Summary of Significant Accounting Policies
Percentage of accounts receivable, major customer	11.00%
Percentage of total revenue, major customer	20.00%

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	$ 180,367	$ 250,005
Short-term investments	109,007	0
Long-term investments	17,314	0
Other assets	1,221	1,221
Total assets measured at fair value	307,909	251,226
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	133,667	250,005
Short-term investments	0	0
Long-term investments	0	0
Other assets	1,221	1,221
Total assets measured at fair value	134,888	251,226
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	46,700	0
Short-term investments	109,007	0
Long-term investments	17,314	0
Other assets	0	0
Total assets measured at fair value	173,021	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Short-term investments	0	0
Long-term investments	0	0
Other assets	0	0
Total assets measured at fair value	0	0
U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	46,700	0
Short-term investments	76,173	0
Long-term investments	4,997	0
U.S. government and agency securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Short-term investments	0	0
Long-term investments	0	0
U.S. government and agency securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	46,700	0
Short-term investments	76,173	0
Long-term investments	4,997	0
U.S. government and agency securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Short-term investments	0	0
Long-term investments	0	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	131,845	250,005
Money market funds \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	131,845	250,005
Money market funds \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Money market funds \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	32,834	0
Long-term investments	12,317	0
Corporate debt securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0	0
Long-term investments	0	0
Corporate debt securities \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	32,834	0
Long-term investments	12,317	0
Corporate debt securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments	0	0
Long-term investments	0	0
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	1,822	0
Other assets	1,221	1,221
Certificates of deposit \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	1,822	0
Other assets	1,221	1,221
Certificates of deposit \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Other assets	0	0
Certificates of deposit \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Other assets	$ 0	$ 0

Investments Available-for-Sale Investments (Details) $ in Thousands	Jul. 31, 2013 USD ($)
Schedule of Available-for-sale Securities
Amortized Cost	$ 306,704
Unrealized Gains	20
Unrealized Losses	(36)
Estimated Fair Value	306,688
Certificates of deposit
Schedule of Available-for-sale Securities
Amortized Cost	1,822
Unrealized Gains	0
Unrealized Losses	0
Estimated Fair Value	1,822
Corporate debt securities
Schedule of Available-for-sale Securities
Amortized Cost	45,173
Unrealized Gains	12
Unrealized Losses	(34)
Estimated Fair Value	45,151
U.S. government and agency securities
Schedule of Available-for-sale Securities
Amortized Cost	127,864
Unrealized Gains	8
Unrealized Losses	(2)
Estimated Fair Value	127,870
Money market funds
Schedule of Available-for-sale Securities
Amortized Cost	131,845
Unrealized Gains	0
Unrealized Losses	0
Estimated Fair Value	$ 131,845

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15C
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15E
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investments Available-for-Sale Investments in Unrealized Loss Position (Details) $ in Thousands	Jul. 31, 2013 USD ($)
Schedule of Available-for-sale Securities
Less than 12 Months, Fair Value	$ 47,355
12 Months or Greater, Fair Value	0
Total, Unrealized Loss Position, Fair Value	47,355
Less than 12 Months, Unrealized Loss	(36)
12 Months or Greater, Unrealized Loss	0
Total, Unrealized Loss	(36)
Corporate debt securities
Schedule of Available-for-sale Securities
Less than 12 Months, Fair Value	31,429
12 Months or Greater, Fair Value	0
Total, Unrealized Loss Position, Fair Value	31,429
Less than 12 Months, Unrealized Loss	(34)
12 Months or Greater, Unrealized Loss	0
Total, Unrealized Loss	(34)
U.S. government and agency securities
Schedule of Available-for-sale Securities
Less than 12 Months, Fair Value	15,926
12 Months or Greater, Fair Value	0
Total, Unrealized Loss Position, Fair Value	15,926
Less than 12 Months, Unrealized Loss	(2)
12 Months or Greater, Unrealized Loss	0
Total, Unrealized Loss	$ (2)

Investments Available-for-Sale Investments, Contractual Maturities (Details) $ in Thousands	Jul. 31, 2013 USD ($)
Amortized Cost
Due within one year	$ 157,515
Due within one to two years	17,344
Instruments not due at a single maturity date	131,845
Total	306,704
Fair Value
Due within one year	157,529
Due within one to two years	17,314
Instruments not due at a single maturity date	131,845
Total	$ 306,688

Intangible Assets Intangible Assets and Related Amortization (Details) - Patents - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Acquired Finite-Lived Intangible Assets
Acquired intellectual property	$ 1,546	$ 546
Less: amortization	(188)	(63)
Total	$ 1,358	$ 483

Intangible Assets Amortization expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Patents
Acquired Finite-Lived Intangible Assets
Amortization of Intangible Assets	$ 125	$ 39	$ 12

Intangible Assets Future Amortization Expense (Details) - Patents - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Acquired Finite-Lived Intangible Assets
2014	$ 227
2015	227
2016	227
2017	208
2018	110
2019 and thereafter	359
Total	$ 1,358	$ 483

Other Financial Information Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Property, Plant and Equipment
Property and equipment, gross	$ 51,562	$ 31,805
Less: accumulated depreciation and amortization	(19,476)	(10,826)
Total property and equipment, net	32,086	20,979
Depreciation and amortization	9,786	6,057	$ 2,167
Computers, equipment, and software
Property, Plant and Equipment
Property and equipment, gross	27,239	12,016
Demonstration units
Property, Plant and Equipment
Property and equipment, gross	11,401	8,440
Leasehold Improvements
Property, Plant and Equipment
Property and equipment, gross	10,176	8,913
Furniture and fixtures
Property, Plant and Equipment
Property and equipment, gross	$ 2,746	$ 2,436

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References + Details

Other Financial Information Accrued Liabilities - Current (Details) - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Accrued Liabilities, Current [Abstract]
Accrued expenses payable	$ 11,144	$ 11,497
Accrued taxes	2,609	1,168
Other liabilities	856	2,524
Total accrued and other liabilities	$ 14,609	$ 15,189

- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

+ References + Details

Commitments and Contingencies Commitment and Contigencies (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2012 lease_agreement lease_renewal_option	Jul. 31, 2013 USD ($)	Jul. 31, 2012 USD ($)	Jul. 31, 2011 USD ($)	Sep. 20, 2012 USD ($)
Leases and Litigation
Total payments under the lease agreements		$ 108,313
Payments under this sub-lease		10,700
Rent credit under sub-lease		524
Rent expense		4,356	$ 2,258	$ 1,393
Contractual Obligation		$ 19,130
Santa Clara, California \| Building
Leases and Litigation
Number of lease agreements entered into \| lease_agreement	2
Number of lease renewal options \| lease_renewal_option	2
Lease renewal option, number of years to extend the lease contract	5 years
Total payments under the lease agreements					$ 94,400

Commitments and Contingencies Lease Commitment Schedule (Details) $ in Thousands	Jul. 31, 2013 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2014	$ 7,728
2015	12,152
2016	12,482
2017	12,224
2018	11,427
2019 and thereafter	52,300
Committed gross lease payments	108,313
Less: proceeds from sublease rental	(10,700)
Net operating lease obligation	$ 97,613

Stockholders' Equity (Deficit) Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Oct. 31, 2012	Jul. 31, 2012
Class of Stock
Proceeds from IPO, gross		$ 219,400
IPO
Class of Stock
Public offering expenses		$ 4,000
Secondary offering
Class of Stock
Proceeds from sale of stock in public offering received by existing shareholders	$ 290,304
Common stock \| IPO
Class of Stock
Shares of common stock sold in public offering, including existing shares (in shares)		6,200,000
Price per share (in usd per share)		$ 42.00
Shares of common stock sold to the public (in shares)		4,687,000
Shares of common stock sold in public offering by existing shareholders (in shares)		1,513,000
Common stock \| IPO Overallotment
Class of Stock
Price per share (in usd per share)		$ 42.00
Shares of common stock sold to the public (in shares)		930,000
Common stock \| Secondary offering
Class of Stock
Price per share (in usd per share)	$ 63
Shares of common stock sold in public offering by existing shareholders (in shares)	4,800,000
Convertible preferred stock \| IPO
Class of Stock
Convertible preferred stock converted into shares of common stock (in shares)		41,305,000

Equity Award Plans Share-Based Compensation Plans (Details)	12 Months Ended
	Jul. 31, 2013 USD ($) shares
2012 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Award Vesting Period (in years)	4 years
Expiration period, Maximum (in years)	10 years
Minimum exercise price for employees owning more than 10% of total combined voting power of all class of stock, percentage of fair market value	110.00%
Minimum exercise price for employees owning less than 10% of total combined voting power of all class of stock, percentage of fair market value	100.00%
Minimum exercise price of non-statutory stock option and options granted to consultants, percentage of fair market value	100.00%
Common Stock, Shares Reserved for Future Issuance (in shares)	21,205,000
Increase in number of shares reserved for issuance on the first day of fiscal year, maximum (in shares)	8,000,000
Increase in number of shares reserved for issuance on the first day of fiscal year, percentage of shares of common stock on the last day of preceeding fiscal year, maximum	4.50%
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award
Common Stock, Shares Reserved for Future Issuance (in shares)	829,000
Increase in number of shares reserved for issuance on the first day of fiscal year, maximum (in shares)	2,000,000
Increase in number of shares reserved for issuance on the first day of fiscal year, percentage of shares of common stock on the last day of preceeding fiscal year, maximum	1.00%
Discount from Lessor of Market Price on Purchase Date or Offering Date	85.00%
ESPP Maximum Employee Subscription Rate	15.00%
ESPP Maximum Number of Shares Per Employee (in shares)	625
ESPP Maximum Purchase of Common Stock Value Per Employee \| $	$ 25,000

Equity Award Plans Stock Options Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Options, Outstanding Roll Forward
Balance, beginning (in shares)	14,225
Options granted (in shares)	90
Options forfeited (in shares)	(655)
Options exercised (in shares)	(3,627)
Balance, ending (in shares)	10,033	14,225
Options, Outstanding, Weighted Average Exercise Price Roll Forward
Balance, beginning (in usd per share)	$ 9.46
Options granted (in usd per share)	55.36
Options forfeited (in usd per share)	10.71
Options exercised (in usd per share)	4.07
Balance, ending (in usd per share)	$ 11.74	$ 9.46
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-Average Remaining Contractual Life (in years)	7 years 9 months	8 years 3 months 18 days
Aggregate Intrinsic Value	$ 373,228	$ 678,248
Options vested and expected to vest (in shares)	9,589
Options vested and expected to vest, Weighted-Average Exercise Price (in usd per share)	$ 11.55
Options vested and expected to vest, Weighted-Average Remaining Contractual Term (in years)	7 years 9 months
Options vested and expected to vest, Aggregate Intrinsic Value	$ 358,533
Options exercisable (in shares)	5,125
Options exercisable, Weighted-Average Exercise Price (in usd per share)	$ 8.06
Options exercisable, Weighted-Average Remaining Contractual Term (in years)	7 years 5 months
Options exercisable, Aggregate Intrinsic Value	$ 209,510

Equity Award Plans RSUs Activities (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
RSUs, Outstanding Roll Forward
Balance, beginning (in shares)	0
RSUs granted (in shares)	2,358
RSUs vested (in shares)	(5)
RSUs forfeited (in shares)	(112)
Balance, ending (in shares)	2,241	0
RSUs, Outstanding, Weighted Average Grant-Date Fair Value Per Share Roll Forward
Balance, beginning (in usd per share)	$ 0.00
RSUs granted (in usd per share)	54.51
RSUs vested (in usd per share)	49.25
RSUs forfeited (in usd per share)	57.89
Balance, ending (in usd per share)	$ 54.36	$ 0.00
RSUs, Additional Disclosures
Weighted-Average Remaining Contractual Term (in years)	1 year 6 months	0 years
Aggregate Intrinsic Value	$ 109,675	$ 0
RSUs vested and expected to vest (in shares)	2,011
RSUs vested and expected to vest, Weighted-Average Grant-Date Fair Value Per Share (in usd per share)	$ 54.44
RSUs vested and expected to vest, Weighted-Average Remaining Contractual Term (in years)	1 year 6 months
RSUs vested and expected to vest, Aggregate Intrinsic Value	$ 98,418

Equity Award Plans Shares Available for Grant (Details) shares in Thousands	12 Months Ended
	Jul. 31, 2013 shares
Shares Available For Grant Roll Forward
Balance at beginning of fiscal year (in shares)	10,571
Options granted (in shares)	(90)
Repurchased (in shares)	42
Options forfeited (in shares)	655
Balance at end of fiscal year (in shares)	8,932
Restricted Stock Units (RSUs)
Shares Available For Grant Roll Forward
RSUs granted (in shares)	(2,358)
RSUs forfeited (in shares)	112

Equity Award Plans Stock Options, Valuation Assumptions (Details) - Stock Option	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award
Risk-free interest rate	1.00%
Risk-free Interest Rate, Minimum		0.70%	0.80%
Risk-free Interest Rate, Maximum		1.10%	1.80%
Expected Term (in years)	6 years		4 years
Volatility	50.00%		49.00%
Volatility, Minimum		49.00%
Volatility, Maximum		51.00%
Dividend yield	0.00%	0.00%	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Expected Term (in years)		6 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Expected Term (in years)		4 years

Equity Award Plans Employee Stock Purchase Plan, Valuation Assumptions (Details) - Employee Stock Purchase Plan (ESPP)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award
Risk-free interest rate	0.10%	0.10%
Expected Term (in years)	6 months	8 months
Volatility	42.00%	46.00%
Dividend yield	0.00%	0.00%

Equity Award Plans Allocation of Share Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	$ 43,876	$ 13,925	$ 4,733
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	4,351	774	206
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	9,931	3,733	1,020
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	20,493	4,267	1,133
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	$ 9,101	$ 5,151	$ 2,374

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Equity Award Plans Allocation of Share-based Compensation 2 (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Grants in Period, Weighted Average Grant Date Fair Value (in usd per share)	$ 26.09	$ 8.17	$ 2.90
Options, Exercises in Period, Total Intrinsic Value	$ 186,845	$ 20,334	$ 3,854
Options, Vested in Period, Grant Date Fair Value	21,351	6,960	1,777
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated Share-based Compensation Expense	$ 43,876	13,925	4,733
Issuance of common stock in connection with employee stock purchase plan (in shares)	170,000
Total compensation cost not yet recognized, nonvested awards, net of estimated forfeitures	$ 133,563
Period for Recognition of Total Compensation Cost Not yet Recognized (in years)	3 years
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated Share-based Compensation Expense	$ 5,263	172
Average Price of Common Stock Purchased During the Peirod (in usd per share)	$ 36.72
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated Share-based Compensation Expense	$ 20,493	4,267	1,133
Plan Modification, Incremental Compensation Cost	1,861
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated Share-based Compensation Expense	9,931	3,733	1,020
Plan Modification, Incremental Compensation Cost		854
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Allocated Share-based Compensation Expense	$ 9,101	$ 5,151	2,374
Plan Modification, Incremental Compensation Cost			$ 1,626

Income Taxes Income (loss) Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Income Tax Disclosure [Abstract]
United States									$ 5,198	$ 1,646	$ (12,654)
Foreign									(23,854)	1,153	602
Income (loss) before income taxes	$ (6,878)	$ (6,474)	$ (2,101)	$ (3,203)	$ (4,310)	$ (41)	$ 712	$ 6,438	$ (18,656)	$ 2,799	$ (12,052)

Income Taxes Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Income Tax Disclosure [Abstract]
Current Federal Tax Expense	$ 5,883	$ 525	$ 0
Deferred Federal Income Tax Expense	0	0	0
Current State and Local Tax Expense	1,758	647	24
Deferred State and Local Income Tax Expense	0	0	0
Current Foreign Tax Expense	3,296	861	490
Deferred Foreign Income Tax Expense (Benefit)	(347)	29	(38)
Income Tax Expense	$ 10,590	$ 2,062	$ 476

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

+ References

+ Details

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law.

+ References

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) in the entity's net foreign deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of applicable enacted tax laws of countries other than the country of domicile.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

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-Name Statement of Financial Accounting Standard (FAS)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 8, 16, 17, 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

+ Details

- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32247-109318

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45, 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 15, 16, 19
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes Effective Tax Reconciliation (Details)	12 Months Ended
Income Taxes Effective Tax Reconciliation (Details)	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	34.00%	34.00%
State taxes, net of federal tax benefit	1.00%	9.70%	4.60%
Change in valuation allowance	(7.30%)	(85.40%)	(26.90%)
Foreign income at other than U.S. rates	(62.40%)	17.20%	(1.80%)
Share-based compensation	(16.10%)	66.60%	(6.90%)
Preferred stock warrant liability	0.00%	12.30%	(5.00%)
Meals and entertainment	(2.00%)	11.90%	(1.50%)
Other, net	(5.00%)	7.40%	(0.40%)
Total	(56.80%)	73.70%	(3.90%)

Income Taxes Components of the deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2013	Jul. 31, 2012
Income Tax Disclosure [Abstract]
Accruals and reserves	$ 23,461	$ 12,065
Research and development and foreign tax credits	4,702	3,911
Net operating loss carryforwards	2,170	10,632
Share-based compensation	10,619	2,956
Gross deferred tax assets	40,952	29,564
Valuation allowance	(37,659)	(29,555)
Total deferred tax assets	3,293	9
Deferred tax liabilities	(2,937)	0
Total	$ 356	$ 9

Income Taxes Net Operating Loss Carryforward (Details)	12 Months Ended
Income Taxes Net Operating Loss Carryforward (Details)	Jul. 31, 2013 USD ($)
Income Tax Disclosure [Abstract]
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 8,104,000
Federal
Operating Loss Carryforwards
Operating Loss Carryforwards	0
State
Operating Loss Carryforwards
Operating Loss Carryforwards	$ 37,363,000

Income Taxes Research and Development Tax Credit Carryforwards (Details) - Research Tax Credit Carryforward $ in Thousands	Jul. 31, 2013 USD ($)
Federal
Tax Credit Carryforward
Tax Credit Carryforward	$ 100
State
Tax Credit Carryforward
Tax Credit Carryforward	$ 4,577

Income Taxes Additional Information (Details) $ in Thousands	Jul. 31, 2013 USD ($)
Income Tax Disclosure [Abstract]
Excess Tax Benefits Included in Federal Net Operating Losses, Options	$ 63,915
Excess Tax Benefit from State Net Operating Loss, Options	112,377
Undistributed Earnings of Foreign Subsidiaries	$ 5,208

Income Taxes Unrecognized tax benefit roll-forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at the beginning of the period	$ 2,630	$ 1,972	$ 1,061
Additions for tax positions taken in prior years	585	9	320
Reductions for tax positions taken in prior years	(3)	0	0
Additions for tax positions related to the current year	3,349	649	591
Settlements	0	0	0
Lapse of statute of limitations	0	0	0
Unrecognized tax benefits at the end of the period	6,561	2,630	$ 1,972
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 294	$ 72

Net Income (Loss) Per Share (Computation of Basic and Diluted Net Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Net income (loss) used to compute net income (loss) per share:
Net income (loss)	$ (15,836)	$ (7,282)	$ (2,613)	$ (3,515)	$ (4,599)	$ 796	$ 424	$ 4,116	$ (29,246)	$ 737	$ (12,528)
Less: undistributed earnings allocated to participating securities									0	(737)	0
Net income (loss) attributable to common stockholders, basic and diluted									$ (29,246)	$ 0	$ (12,528)
Weighted-average shares used to compute net income (loss) per share:
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic and diluted (in shares)									68,682	19,569	14,201
Net income (loss) per share attributable to common stockholders:
Net income (loss) per share attributable to common stockholders, basic and diluted (in usd per share)									$ (0.43)	$ 0.00	$ (0.88)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Net Income (Loss) Per Share (Schedule of Antidilutive Securities Excluded from Computation) (Details) - shares shares in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	10,033	4,116	8,195
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	2,241	0	0
ESPP shares
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	114	0	0
Redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	0	0	41,084
Warrants to purchase redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities (in shares)	0	0	225

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Segment Information Revenue by geographic theater (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Segment Reporting Information
Revenues	$ 396,107	$ 255,138	$ 118,597
United States
Segment Reporting Information
Revenues	228,604	151,435	69,696
Other Americas
Segment Reporting Information
Revenues	19,012	10,438	3,449
Total Americas
Segment Reporting Information
Revenues	247,616	161,873	73,145
EMEA
Segment Reporting Information
Revenues	91,496	61,994	32,504
APAC
Segment Reporting Information
Revenues	$ 56,995	$ 31,271	$ 12,948

Related Party Transactions Related Party Transactions (Details) $ in Thousands	12 Months Ended
	Jul. 31, 2013 USD ($)
Related Party Transactions [Abstract]
Revenue from sales transaction with related party	$ 2,623

Selected Quarterly Financial Data (Unaudited) Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Revenue:
Product	$ 65,456	$ 60,793	$ 61,944	$ 55,514	$ 49,439	$ 43,524	$ 38,638	$ 42,861	$ 243,707	$ 174,462	$ 84,800
Services	46,929	40,496	34,555	30,420	26,203	22,176	18,045	14,252	152,400	80,676	33,797
Total revenue	112,385	101,289	96,499	85,934	75,642	65,700	56,683	57,113	396,107	255,138	118,597
Cost of revenue:
Product	16,505	15,855	16,636	14,416	12,533	11,524	10,248	10,310	63,412	44,615	21,766
Services	13,753	11,835	10,982	9,774	9,034	7,109	5,265	4,530	46,344	25,938	10,507
Total cost of revenue	30,258	27,690	27,618	24,190	21,567	18,633	15,513	14,840	109,756	70,553	32,273
Total gross profit	82,127	73,599	68,881	61,744	54,075	47,067	41,170	42,273	286,351	184,585	86,324
Operating expenses:
Research and development	17,627	16,048	15,495	13,312	11,746	10,462	8,514	7,848	62,482	38,570	21,366
Sales and marketing	59,635	51,733	45,796	42,607	37,721	30,216	25,612	22,368	199,771	115,917	62,254
General and administrative	11,748	12,268	9,747	8,956	8,852	6,430	5,768	5,157	42,719	26,207	13,108
Total operating expenses	89,010	80,049	71,038	64,875	58,319	47,108	39,894	35,373	304,972	180,694	96,728
Operating income (loss)	(6,883)	(6,450)	(2,157)	(3,131)	(4,244)	(41)	1,276	6,900	(18,621)	3,891	(10,404)
Interest income	137	133	116	98	11	3	2	2	484	18	3
Other expense, net	(132)	(157)	(60)	(170)	(77)	(3)	(566)	(464)	(519)	(1,110)	(1,651)
Income (loss) before income taxes	(6,878)	(6,474)	(2,101)	(3,203)	(4,310)	(41)	712	6,438	(18,656)	2,799	(12,052)
Provision (benefit) for income taxes	8,958	808	512	312	289	(837)	288	2,322	10,590	2,062	476
Net income (loss)	$ (15,836)	$ (7,282)	$ (2,613)	$ (3,515)	$ (4,599)	$ 796	$ 424	$ 4,116	$ (29,246)	$ 737	$ (12,528)
Net income (loss) per share attributable to common stockholders:
Basic (in usd per share)	$ (0.22)	$ (0.10)	$ (0.04)	$ (0.05)	$ (0.18)	$ 0.00	$ 0.00	$ 0.00
Diluted (in usd per share)	$ (0.22)	$ (0.10)	$ (0.04)	$ (0.05)	$ (0.18)	$ 0.00	$ 0.00	$ 0.00

Subsequent Events Subsequent Events (Details)	1 Months Ended
Subsequent Events Subsequent Events (Details)	Sep. 30, 2013 USD ($)
Subsequent Event
Subsequent Event
Payments to acquire intangible assets	$ 5,000,000