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{"sheet":"Document_and_Entity_Informatio","index":0,"n_rows":14,"n_cols":3,"rows_kept":14,"cut":false,"hidden":false,"merged":[[0,0,1,0]]}
["Document and Entity Information","6 Months Ended"]
[null,"Jan. 31, 2015","Mar. 05, 2015"]
["Document and Entity Information [Abstract]"]
["Document Type","10-Q"]
["Amendment Flag",false]
["Document Period End Date","2015-01-31"]
["Document Fiscal Year Focus",2015]
["Document Fiscal Period Focus","Q2"]
["Trading Symbol","ARUN"]
["Entity Registrant Name","ARUBA NETWORKS, INC."]
["Entity Central Index Key",1173752]
["Current Fiscal Year End Date",{"$f":"--7-31","v":-24}]
["Entity Filer Category","Large Accelerated Filer"]
["Entity Common Stock, Shares Outstanding",null,108315234]

{"sheet":"CONDENSED_CONSOLIDATED_BALANCE","index":1,"n_rows":33,"n_cols":3,"rows_kept":33,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Current assets"]
["Cash and cash equivalents",151949,118594]
["Short-term investments",139049,166359]
["Accounts receivable, less allowances of $410 and $333, respectively",114109,102256]
["Inventory",45273,39836]
["Deferred costs of revenue",12113,12721]
["Prepaids and other current assets",17372,18063]
["Deferred income tax assets, current",14840,25676]
["Total current assets",494705,483505]
["Property and equipment, net",30360,27261]
["Goodwill",67242,67242]
["Intangible assets, net",18079,19505]
["Deferred income tax assets, non-current",22698,23962]
["Other non-current assets",8779,8185]
["Total assets",641863,629660]
["Current liabilities"]
["Accounts payable",19615,23763]
["Accrued liabilities",95221,80578]
["Deferred revenue, current",153510,135160]
["Total current liabilities",268346,239501]
["Deferred revenue, non-current",47225,44977]
["Other non-current liabilities",14229,12686]
["Total liabilities",329800,297164]
["Commitments and contingencies","  ","  "]
["Stockholdersâ€™ equity"]
["Common stock: $0.0001 par value; 350,000 shares authorized; 107,289 and 107,557 shares issued and outstanding, respectively",11,11]
["Additional paid-in capital",479510,508374]
["Accumulated other comprehensive loss",-1518,-1523]
["Accumulated deficit",-165940,-174366]
["Total stockholdersâ€™ equity",312063,332496]
["Total liabilities and stockholdersâ€™ equity",641863,629660]

{"sheet":"CONDENSED_CONSOLIDATED_BALANCE1","index":2,"n_rows":8,"n_cols":3,"rows_kept":8,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, except Share data, unless otherwise specified"]
["Statement of Financial Position [Abstract]"]
["Accounts receivable, allowance for doubtful accounts net",410,333]
["Common stock, par value (in US$ per share)",1E-4,1E-4]
["Common stock, shares authorized",350000000,350000000]
["Common stock, shares issued",107289000,107557000]
["Common stock, shares outstanding",107289000,107557000]

{"sheet":"CONDENSED_CONSOLIDATED_STATEME","index":3,"n_rows":29,"n_cols":5,"rows_kept":29,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, except Per Share data, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Revenue"]
["Product",173721,141755,342191,272586]
["Support and professional services",39210,34601,78561,64697]
["Total revenue",212931,176356,420752,337283]
["Cost of revenue"]
["Product",51536,43303,103166,83421]
["Support and professional services",8820,10050,18429,18483]
["Total cost of revenue",60356,53353,121595,101904]
["Gross profit",152575,123003,299157,235379]
["Operating expenses"]
["Research and development",43179,42585,85413,83030]
["Sales and marketing",72280,69569,144255,132613]
["General and administrative",15674,14468,31289,28983]
["Restructuring charges",-482,0,6072,0]
["Total operating expenses",130651,126622,267029,244626]
["Operating income (loss)",21924,-3619,32128,-9247]
["Other income (expense), net"]
["Interest income",192,217,391,478]
["Other income (expense), net",-1266,-80,-2018,190]
["Total other income (expense), net",-1074,137,-1627,668]
["Income (loss) before income taxes",20850,-3482,30501,-8579]
["Provision for income taxes",15167,7219,22075,9949]
["Net income (loss)",5683,-10701,8426,-18528]
["Net income (loss) per share - basic (in dollars per share)",0.05,-0.1,0.08,-0.17]
["Net income (loss) per share - diluted (in dollars per share)",0.05,-0.1,7.0000000000000007E-2,-0.17]
["Shares used in per share calculation - basic",107891,107153,108132,109608]
["Shares used in per share calculation - diluted",113393,107153,114711,109608]

{"sheet":"CONDENSED_CONSOLIDATED_STATEME1","index":4,"n_rows":10,"n_cols":5,"rows_kept":10,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Statement of Comprehensive Income [Abstract]"]
["Net income (loss)",5683,-10701,8426,-18528]
["Other comprehensive income, net of tax:"]
["Unrealized gains, net",36,57,14,205]
["Realized gains reclassified into earnings",-9,-35,-9,-65]
["Net change in unrealized gains on short-term investments",27,22,5,140]
["Other comprehensive income",27,22,5,140]
["Comprehensive income (loss)",5710,-10679,8431,-18388]

{"sheet":"CONDENSED_CONSOLIDATED_STATEME2","index":5,"n_rows":42,"n_cols":3,"rows_kept":42,"cut":false,"hidden":false,"merged":[[0,1,0,2]]}
["CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)","6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014"]
["Cash flows from operating activities"]
["Net income (loss)",8426,-18528]
["Adjustments to reconcile net income (loss) to net cash provided by operating activities:"]
["Depreciation and amortization",14267,14250]
["Change in provision for doubtful accounts",79,-173]
["Inventory reserves for excess, obsolescence and other",5027,2937]
["Stock-based compensation expense",48294,56163]
["Amortization of discounts and premiums on short-term investments",680,1129]
["(Gain) loss on disposal of property and equipment, intangibles and other",-712,232]
["Deferred income taxes",11231,3979]
["Excess tax benefit associated with stock-based compensation",-6365,-721]
["Changes in operating assets and liabilities:"]
["Accounts receivable",-11932,11212]
["Inventory",-9430,-11451]
["Deferred costs of revenue",608,-4069]
["Prepaids and other current assets",211,2373]
["Other non-current assets",606,-2058]
["Accounts payable, accrued liabilities and other non-current liabilities",24784,-34700]
["Deferred revenue",20598,34028]
["Net cash provided by operating activities",106372,54603]
["Cash flows from investing activities"]
["Purchases of short-term investments",-65720,-87119]
["Proceeds from sales of short-term investments",12799,89240]
["Proceeds from maturities of short-term investments",79559,99083]
["Purchases of property and equipment",-13031,-7854]
["Purchases of intangible assets",-2840,0]
["Investment in a privately-held company",-1200,0]
["Net cash provided by investing activities",9567,93350]
["Cash flows from financing activities"]
["Proceeds from issuance of common stock",16051,10473]
["Repurchases of common stock under stock repurchase program",-105000,-193504]
["Excess tax benefit associated with stock-based compensation",6365,721]
["Net cash used in financing activities",-82584,-182310]
["Net increase (decrease) in cash and cash equivalents",33355,-34357]
["Cash and cash equivalents, beginning of period",118594,144919]
["Cash and cash equivalents, end of period",151949,110562]
["Supplemental disclosure of cash flow information"]
["Income taxes paid",2970,3046]
["Non-cash investing and financing activities"]
["Net change in accounts payable and accrued liabilities related to purchases of property and equipment",105,891]

{"sheet":"The_Company_and_its_Significan","index":6,"n_rows":20,"n_cols":2,"rows_kept":20,"cut":false,"hidden":false,"merged":[[0,0,1,0],[3,0,19,0]]}
["The Company and its Significant Accounting Policies","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Organization, Consolidation and Presentation of Financial Statements [Abstract]"]
["The Company and its Significant Accounting Policies","The Company and its Significant Accounting Policies"]
[null,"The Company"]
[null,"Aruba Networks, Inc. (the “Company”) is a leading global provider of enterprise mobility solutions. The Company develops, markets and sells products and services that help solve its customers’ secure mobility requirements through its Mobility-Defined Networks, a network architecture designed to automatically optimize infrastructure-wide performance and trigger security actions that previously required manual intervention by information technology (“IT”) departments. Aruba Mobility-Defined Networks are comprised of the following three major components: Aruba's mobility-centric network infrastructure, Aruba's ClearPass Access Management System, and Aruba's mobility applications. The Company’s goal is to provide simplified, dependable solutions that enable IT departments to quickly, securely and cost-effectively meet their mobility and bring-your-own-device (“BYOD”) needs. The Company’s Mobility-Defined Networks are designed for the all-wireless workplace and an increasingly mobile universe of end-users, who the Company refers to as GenMobile, who rely on mobile devices for nearly every aspect of their work life and personal communication. The Company derives its revenue primarily from sales of Mobility Controllers with ArubaOS operating system software, controller-less and controller-managed wireless access points, value-added security software modules, access management system solutions, multi-vendor management software, mobility management solutions and other software, Mobility Access Switches, and support and professional services. The Company has offices in the Americas, Europe, the Middle East and the Asia Pacific regions and employs staff around the world."]
[null,"Basis of Presentation"]
[null,"The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with United States of America (\"U.S.\") generally accepted accounting principles (\"GAAP\") for interim financial information, pursuant to the rules and regulations of the United States Securities and Exchange Commission (\"SEC\"). Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. The accompanying Condensed Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances, transactions and cash flows have been eliminated. The July 31, 2014 Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP."]
[null,"The unaudited Condensed Consolidated Financial Statements have been prepared on the same basis as the Company's audited financial statements as of and for the year ended July 31, 2014 and include all adjustments necessary for the fair statement of the Company’s financial position as of January 31, 2015; the results of operations and statements of comprehensive income (loss) for the three and six months ended January 31, 2015 and 2014; and the statements of cash flows for the six months ended January 31, 2015 and 2014. The results of operations for the three and six months ended January 31, 2015 are not necessarily indicative of the operating results for any subsequent quarter, for the fiscal year ending July 31, 2015 or any future periods. "]
[null,"The accompanying statements are unaudited and should be read in conjunction with the audited Consolidated Financial Statements and related notes contained in the Company’s Annual Report on Form 10-K for the year ended July 31, 2014, filed with the SEC on September 24, 2014."]
[null,"Significant Accounting Policies"]
[null,"There have been no significant changes in the Company’s accounting policies for the second quarter of fiscal 2015, as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the year ended July 31, 2014."]
[null,"Recent Accounting Pronouncements"]
[null,"New Accounting Updates Recently Adopted"]
[null,"In March 2013, the Financial Accounting Standards Board (\"FASB\") issued an accounting standard update requiring an entity to release into net income (loss) the entire amount of a cumulative translation adjustment related to its investment in a foreign entity when as a parent, it either sells a part or all of its investment in the foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within the foreign entity. This standard became effective for the Company beginning in the first quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"In July 2013, the FASB issued an accounting standard update that provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists, with the purpose of reducing diversity in practice. This standard requires the netting of unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. This standard became effective for the Company beginning in the first quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"In November 2014, the FASB issued an accounting standard update which provides to all acquired entities the option to apply pushdown accounting when an acquirer obtains control of them. The guidance also allows any subsidiary of an acquired entity to apply pushdown accounting to its separate financial statements, regardless of whether the acquired entity elects to apply pushdown accounting. This standard became effective for the Company in the second quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"Recent Accounting Updates Not Yet Effective"]
[null,"In April 2014, the FASB issued an accounting standard update that changes the criteria for reporting discontinued operations. This standard raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures around both discontinued operations and certain other disposals that do not meet the definition of discontinued operation. Under the revised standard, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has, or will have, a major effect on an entity's operations and financial results when either it qualifies as held for sale, disposed of by sale, or disposed of other than by sale. This standard will be effective for the Company beginning in the first quarter of fiscal 2016. The adoption of this standard is not expected to have a material impact on the Company's Consolidated Financial Statements."]
[null,"In May 2014, the FASB issued an accounting standard update which provides for new revenue recognition guidance. The new standard is expected to supersede nearly all existing revenue recognition guidance. The core principle of the new guidance is to recognize revenue when promised goods or services are transferred to customers, in an amount that reflects the consideration to which the vendor expects to receive for those goods or services. The new standard is expected to require more judgment and estimates within the revenue recognition process than currently required under existing U.S. GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to separate performance obligations. This standard will be effective for the Company beginning in the first quarter of fiscal 2018, with no early adoption permitted. The Company will use one of two methods of adoption: (i) retrospective to each prior reporting period presented, with the option to elect certain practical expedients as defined within the standard; or (ii) retrospective with the cumulative effect of initially applying the standard recognized at the date of initial application inclusive of certain additional disclosures. The Company is currently evaluating these transition methods as well as the impact of this standard on its Consolidated Financial Statements."]

{"sheet":"Goodwill_and_Intangible_Assets","index":7,"n_rows":100,"n_cols":16,"rows_kept":100,"cut":false,"hidden":false,"merged":[[42,1,42,16],[63,1,63,16],[64,1,64,16],[80,1,80,16],[81,1,81,16],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,100,0],[3,1,3,16],[4,1,4,16],[19,1,19,16],[20,1,20,16],[41,1,41,16],[97,1,98,1],[97,2,98,3],[97,4,98,4],[99,1,100,1],[99,2,100,2],[99,3,100,3],[99,4,100,4],[93,1,94,1],[93,2,94,3],[93,4,94,4],[95,1,96,1],[95,2,96,3],[95,4,96,4],[89,1,90,1],[89,2,90,3],[89,4,90,4],[91,1,92,1],[91,2,92,3],[91,4,92,4],[84,2,84,4],[85,2,85,4],[86,2,86,4],[87,1,88,1],[87,2,88,2],[87,3,88,3],[87,4,88,4],[78,12,79,12],[78,13,79,13],[78,14,79,14],[78,15,79,15],[78,16,79,16],[82,1,82,4],[78,6,79,6],[78,7,79,7],[78,8,79,8],[78,9,79,9],[78,10,79,10],[78,11,79,11],[76,10,77,11],[76,12,77,12],[76,13,77,13],[76,14,77,15],[76,16,77,16],[78,1,79,1],[78,2,79,2],[78,3,79,3],[78,4,79,4],[78,5,79,5],[74,13,75,13],[74,14,75,15],[74,16,75,16],[76,1,77,1],[76,2,77,3],[76,4,77,4],[76,5,77,5],[76,6,77,7],[76,8,77,8],[76,9,77,9],[72,16,73,16],[74,1,75,1],[74,2,75,3],[74,4,75,4],[74,5,75,5],[74,6,75,7],[74,8,75,8],[74,9,75,9],[74,10,75,11],[74,12,75,12],[72,8,73,8],[72,9,73,9],[72,10,73,11],[72,12,73,12],[72,13,73,13],[72,14,73,15],[70,12,71,12],[70,13,71,13],[70,14,71,14],[70,15,71,15],[70,16,71,16],[72,1,73,1],[72,2,73,3],[72,4,73,4],[72,5,73,5],[72,6,73,7],[70,6,71,6],[70,7,71,7],[70,8,71,8],[70,9,71,9],[70,10,71,10],[70,11,71,11],[68,2,68,4],[68,6,68,8],[68,10,68,12],[68,14,68,16],[69,2,69,16],[70,1,71,1],[70,2,71,2],[70,3,71,3],[70,4,71,4],[70,5,71,5],[61,12,62,12],[61,13,62,13],[61,14,62,14],[65,1,65,16],[67,2,67,8],[67,10,67,16],[61,6,62,6],[61,7,62,7],[61,8,62,8],[61,9,62,9],[61,10,62,10],[61,11,62,11],[59,8,60,9],[59,10,60,10],[59,11,60,11],[59,12,60,13],[59,14,60,14],[61,1,62,1],[61,2,62,2],[61,3,62,3],[61,4,62,4],[61,5,62,5],[59,1,60,1],[59,2,60,2],[59,3,60,3],[59,4,60,5],[59,6,60,6],[59,7,60,7],[57,7,58,7],[57,8,58,9],[57,10,58,10],[57,11,58,11],[57,12,58,13],[57,14,58,14],[55,8,56,9],[55,10,56,10],[55,11,56,11],[55,12,56,13],[55,14,56,14],[57,1,58,1],[57,2,58,2],[57,3,58,3],[57,4,58,5],[57,6,58,6],[53,10,54,10],[53,11,54,11],[53,12,54,13],[53,14,54,14],[55,1,56,1],[55,2,56,2],[55,3,56,3],[55,4,56,5],[55,6,56,6],[55,7,56,7],[51,11,52,11],[51,12,52,13],[51,14,52,14],[53,1,54,1],[53,2,54,2],[53,3,54,3],[53,4,54,5],[53,6,54,6],[53,7,54,7],[53,8,54,9],[49,13,50,13],[49,14,50,14],[51,1,52,1],[51,2,52,2],[51,3,52,3],[51,4,52,5],[51,6,52,6],[51,7,52,7],[51,8,52,9],[51,10,52,10],[49,7,50,7],[49,8,50,8],[49,9,50,9],[49,10,50,10],[49,11,50,11],[49,12,50,12],[49,1,50,1],[49,2,50,2],[49,3,50,3],[49,4,50,4],[49,5,50,5],[49,6,50,6],[45,11,46,11],[45,12,45,14],[46,12,46,14],[47,2,47,14],[48,4,48,6],[48,8,48,10],[48,12,48,14],[39,13,40,13],[39,14,40,14],[43,1,43,14],[45,1,46,1],[45,3,46,3],[45,4,45,6],[46,4,46,6],[45,7,46,7],[45,8,45,10],[46,8,46,10],[39,7,40,7],[39,8,40,8],[39,9,40,9],[39,10,40,10],[39,11,40,11],[39,12,40,12],[39,1,40,1],[39,2,40,2],[39,3,40,3],[39,4,40,4],[39,5,40,5],[39,6,40,6],[37,7,38,7],[37,8,38,9],[37,10,38,10],[37,11,38,11],[37,12,38,13],[37,14,38,14],[35,8,36,9],[35,10,36,10],[35,11,36,11],[35,12,36,13],[35,14,36,14],[37,1,38,1],[37,2,38,2],[37,3,38,3],[37,4,38,5],[37,6,38,6],[35,1,36,1],[35,2,36,2],[35,3,36,3],[35,4,36,5],[35,6,36,6],[35,7,36,7],[33,7,34,7],[33,8,34,9],[33,10,34,10],[33,11,34,11],[33,12,34,13],[33,14,34,14],[31,8,32,9],[31,10,32,10],[31,11,32,11],[31,12,32,13],[31,14,32,14],[33,1,34,1],[33,2,34,2],[33,3,34,3],[33,4,34,5],[33,6,34,6],[29,10,30,10],[29,11,30,11],[29,12,30,13],[29,14,30,14],[31,1,32,1],[31,2,32,2],[31,3,32,3],[31,4,32,5],[31,6,32,6],[31,7,32,7],[27,12,28,12],[27,13,28,13],[27,14,28,14],[29,1,30,1],[29,2,30,2],[29,3,30,3],[29,4,30,5],[29,6,30,6],[29,7,30,7],[29,8,30,9],[27,6,28,6],[27,7,28,7],[27,8,28,8],[27,9,28,9],[27,10,28,10],[27,11,28,11],[24,12,24,14],[25,2,25,14],[26,4,26,6],[26,8,26,10],[26,12,26,14],[27,1,28,1],[27,2,28,2],[27,3,28,3],[27,4,28,4],[27,5,28,5],[21,1,21,14],[23,1,24,1],[23,3,24,3],[23,4,23,6],[24,4,24,6],[23,7,24,7],[23,8,23,10],[24,8,24,10],[23,11,24,11],[23,12,23,14],[15,1,16,1],[15,2,16,3],[15,4,16,4],[17,1,18,1],[17,2,18,2],[17,3,18,3],[17,4,18,4],[11,1,12,1],[11,2,12,3],[11,4,12,4],[13,1,14,1],[13,2,14,3],[13,4,14,4],[5,1,5,4],[7,2,7,4],[8,2,8,4],[9,1,10,1],[9,2,10,2],[9,3,10,3],[9,4,10,4]]}
["Goodwill and Intangible Assets","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Goodwill and Intangible Assets Disclosure [Abstract]"]
["Goodwill and Intangible Assets","Goodwill and Intangible Assets"]
[null,"The following table summarizes details of the Company’s goodwill:"]
[]
[]
[null,null,"Amount"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2013","$",67242]
[]
[null,"Changes in goodwill","—"]
[]
[null,"Balance at July 31, 2014",67242]
[]
[null,"Changes in goodwill","—"]
[]
[null,"Balance at January 31, 2015","$",67242]
[]
[]
[null,"The following table summarizes details of the Company’s intangible assets:"]
[]
[]
[null,null,"Estimated",null,"Gross",null,null,null,"Accumulated",null,null,null,"Net"]
[null,null,"Useful Lives",null,"Value",null,null,null,"Amortization",null,null,null,"Value"]
[null,null,"(in thousands, except estimated useful lives)"]
[null,"Balance at January 31, 2015"]
[null,"Existing technology","3 to 7 years",null,"$",41383,null,null,"$","(32,505",")",null,"$",8878]
[]
[null,"Patents","2 to 13 years",null,14636,null,null,null,"(6,537",null,")",null,8099]
[]
[null,"Customer contracts","4 to 7 years",null,7533,null,null,null,"(6,758",null,")",null,775]
[]
[null,"Support agreements","5 to 6 years",null,2917,null,null,null,"(2,856",null,")",null,61]
[]
[null,"Tradenames and trademarks","1 to 5 years",null,1150,null,null,null,"(917",null,")",null,233]
[]
[null,"Non-compete agreements"," 2 to 4 years",null,912,null,null,null,"(879",null,")",null,33]
[]
[null,"Total",null,null,"$",68531,null,null,"$","(50,452",")",null,"$",18079]
[]
[null,"In the second quarter of fiscal 2015, the Company entered into a perpetual patent license agreement for $2.8 million to support its product development and research and development activities."]
[]
[]
[]
[null,null,"Estimated ",null,"Gross ",null,null,null,"Accumulated ",null,null,null,"Net "]
[null,null,"Useful Lives",null,"Value",null,null,null,"Amortization",null,null,null,"Value"]
[null,null,"(in thousands, except estimated useful lives)"]
[null,"Balance at July 31, 2014"]
[null,"Existing technology","3 to 7 years",null,"$",41383,null,null,"$","(29,196",")",null,"$",12187]
[]
[null,"Patents","2 to 13 years",null,11796,null,null,null,"(5,881",null,")",null,5915]
[]
[null,"Customer contracts","4 to 7 years",null,7533,null,null,null,"(6,536",null,")",null,997]
[]
[null,"Support agreements","5 to 6 years",null,2917,null,null,null,"(2,839",null,")",null,78]
[]
[null,"Tradenames and trademarks","1 to 5 years",null,1150,null,null,null,"(867",null,")",null,283]
[]
[null,"Non-compete agreements"," 2 to 4 years",null,912,null,null,null,"(867",null,")",null,45]
[]
[null,"Total",null,null,"$",65691,null,null,"$","(46,186",")",null,"$",19505]
[]
[]
[null,"The following table summarizes the amortization expense related to intangible assets recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Cost of product revenue","$",1941,null,null,"$",2025,null,null,"$",3936,null,null,"$",4030]
[]
[null,"Sales and marketing",144,null,null,null,353,null,null,null,288,null,null,null,706]
[]
[null,"Research and development",6,null,null,null,6,null,null,null,13,null,null,null,12]
[]
[null,"General and administrative",15,null,null,null,"—",null,null,null,29,null,null,null,"—"]
[]
[null,"Total","$",2106,null,null,"$",2384,null,null,"$",4266,null,null,"$",4748]
[]
[]
[null,"The following table summarizes the estimated future amortization expense of the Company's intangible assets as of January 31, 2015:"]
[]
[]
[null,null,"Amount"]
[null,null,"(in thousands)"]
[null,"Fiscal Year"]
[null,"2015 (remaining six months)","$",4279]
[]
[null,2016,4829]
[]
[null,2017,2018]
[]
[null,2018,1764]
[]
[null,2019,1031]
[]
[null,"Thereafter",4158]
[]
[null,"Total","$",18079]

{"sheet":"Net_Income_Loss_Per_Common_Sha","index":8,"n_rows":37,"n_cols":17,"rows_kept":37,"cut":false,"hidden":false,"merged":[[7,1,7,16],[25,1,25,16],[26,1,26,16],[36,12,37,12],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,37,0],[3,1,3,16],[4,1,4,16],[5,1,5,16],[6,1,6,16],[36,6,37,6],[36,7,37,7],[36,8,37,8],[36,9,37,9],[36,10,37,10],[36,11,37,11],[34,8,35,8],[34,9,35,9],[34,10,35,10],[34,11,35,11],[34,12,35,12],[36,1,37,1],[36,2,37,2],[36,3,37,3],[36,4,37,4],[36,5,37,5],[32,10,33,10],[32,11,33,11],[32,12,33,12],[34,1,35,1],[34,2,35,2],[34,3,35,3],[34,4,35,4],[34,5,35,5],[34,6,35,6],[34,7,35,7],[31,2,31,12],[32,1,33,1],[32,2,33,2],[32,3,33,3],[32,4,33,4],[32,5,33,5],[32,6,33,6],[32,7,33,7],[32,8,33,8],[32,9,33,9],[23,16,24,16],[27,1,27,12],[29,2,29,6],[29,8,29,12],[30,2,30,3],[30,5,30,6],[30,8,30,9],[30,11,30,12],[23,10,24,10],[23,11,24,11],[23,12,24,12],[23,13,24,13],[23,14,24,14],[23,15,24,15],[21,16,22,16],[23,1,24,1],[23,2,24,2],[23,3,24,3],[23,4,24,4],[23,5,24,5],[23,6,24,6],[23,7,24,7],[23,8,24,8],[23,9,24,9],[21,10,22,10],[21,11,22,11],[21,12,22,12],[21,13,22,13],[21,14,22,14],[21,15,22,15],[19,16,20,16],[21,1,22,1],[21,2,22,2],[21,3,22,3],[21,4,22,4],[21,5,22,5],[21,6,22,6],[21,7,22,7],[21,8,22,8],[21,9,22,9],[19,8,20,8],[19,9,20,9],[19,10,20,11],[19,12,20,12],[19,13,20,13],[19,14,20,15],[17,10,18,11],[17,12,18,12],[17,13,18,13],[17,14,18,15],[17,16,18,16],[19,1,20,1],[19,2,20,3],[19,4,20,4],[19,5,20,5],[19,6,20,7],[15,13,16,13],[15,14,16,15],[15,16,16,16],[17,1,18,1],[17,2,18,3],[17,4,18,4],[17,5,18,5],[17,6,18,7],[17,8,18,8],[17,9,18,9],[13,16,14,16],[15,1,16,1],[15,2,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,7],[15,8,16,8],[15,9,16,9],[15,10,16,11],[15,12,16,12],[13,10,14,10],[13,11,14,11],[13,12,14,12],[13,13,14,13],[13,14,14,14],[13,15,14,15],[12,2,12,16],[13,1,14,1],[13,2,14,2],[13,3,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,6],[13,7,14,7],[13,8,14,8],[13,9,14,9],[8,1,8,16],[10,2,10,8],[10,10,10,16],[11,2,11,4],[11,6,11,8],[11,10,11,12],[11,14,11,16]]}
["Net Income (Loss) Per Common Share","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Earnings Per Share [Abstract]"]
["Net Income (Loss) Per Common Share","Net Income (Loss) Per Common Share"]
[null,"Basic and diluted net income (loss) per common share is calculated by dividing net income (loss) by the weighted-average shares of common stock outstanding during the reporting period. The Company's dilutive potential common shares are not included when their effect is anti-dilutive."]
[null,"Potentially dilutive common shares consist of common shares issuable upon exercise of stock options, issuances of Employee Stock Purchase Plan (\"ESPP\") shares, vesting of Restricted Stock Units (\"RSUs\"), and vesting of Market Stock Units (\"MSUs\"). The Company includes the common shares underlying MSUs in the calculation of diluted net income per share when they become contingently issuable and excludes such shares when they are not contingently issuable."]
[null,"The dilutive effect of potentially dilutive common shares is calculated based on the average share price for each fiscal reporting period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that would be recorded in additional paid-in capital when the award becomes deductible are collectively assumed to be used to repurchase shares."]
[null,"The following table sets forth the computation of basic and diluted net income (loss) per share:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands, except per share data)"]
[null,"Net income (loss)","$",5683,null,null,"$","(10,701",")",null,"$",8426,null,null,"$","(18,528",")"]
[]
[null,"Weighted-average shares outstanding - basic",107891,null,null,null,107153,null,null,null,108132,null,null,null,109608]
[]
[null,"Dilutive effect of potential shares",5502,null,null,null,"—",null,null,null,6579,null,null,null,"—"]
[]
[null,"Weighted-average shares outstanding - diluted",113393,null,null,null,107153,null,null,null,114711,null,null,null,109608]
[]
[null,"Net income (loss) per share - basic","$",0.05,null,null,"$","(0.10",")",null,"$",0.08,null,null,"$","(0.17",")"]
[]
[null,"Net income (loss) per share - diluted","$",0.05,null,null,"$","(0.10",")",null,"$",7.0000000000000007E-2,null,null,"$","(0.17",")"]
[]
[]
[null,"The following table summarizes the potentially dilutive common shares that were excluded from the computation of the diluted net income (loss) per share for the periods presented, because including them would have had an anti-dilutive effect: "]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":5},"Six Months Ended January 31,"]
[null,null,2015,null,null,2014,null,null,2015,null,null,2014]
[null,null,"(in thousands)"]
[null,"Options to purchase common stock",1013,null,null,1102,null,null,1023,null,null,1201]
[]
[null,"Restricted stock awards",1833,null,null,1345,null,null,1357,null,null,1295]
[]
[null,"Market stock units",580,null,null,"—",null,null,429,null,null,"—"]

{"sheet":"ShortTerm_Investments","index":9,"n_rows":99,"n_cols":16,"rows_kept":99,"cut":false,"hidden":false,"merged":[[98,1,98,16],[42,1,42,16],[43,1,43,16],[56,1,56,16],[69,1,69,16],[70,1,70,16],[84,1,84,16],[96,7,97,7],[96,8,97,8],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,98,0],[3,1,3,16],[4,1,4,16],[22,1,22,16],[96,1,97,1],[96,2,97,2],[96,3,97,3],[96,4,97,4],[96,5,97,5],[96,6,97,6],[92,8,93,8],[94,1,95,1],[94,2,95,3],[94,4,95,4],[94,5,95,5],[94,6,95,7],[94,8,95,8],[90,2,90,8],[91,2,91,4],[91,6,91,8],[92,1,93,1],[92,2,93,2],[92,3,93,3],[92,4,93,4],[92,5,93,5],[92,6,93,6],[92,7,93,7],[82,7,83,7],[82,8,83,8],[85,1,85,8],[87,2,87,8],[88,1,89,1],[88,2,88,4],[89,2,89,4],[88,5,89,5],[88,6,88,8],[89,6,89,8],[82,1,83,1],[82,2,83,2],[82,3,83,3],[82,4,83,4],[82,5,83,5],[82,6,83,6],[78,8,79,8],[80,1,81,1],[80,2,81,3],[80,4,81,4],[80,5,81,5],[80,6,81,7],[80,8,81,8],[76,2,76,8],[77,2,77,4],[77,6,77,8],[78,1,79,1],[78,2,79,2],[78,3,79,3],[78,4,79,4],[78,5,79,5],[78,6,79,6],[78,7,79,7],[67,7,68,7],[67,8,68,8],[71,1,71,8],[73,2,73,8],[74,1,75,1],[74,2,74,4],[75,2,75,4],[74,5,75,5],[74,6,74,8],[75,6,75,8],[67,1,68,1],[67,2,68,2],[67,3,68,3],[67,4,68,4],[67,5,68,5],[67,6,68,6],[63,8,64,8],[65,1,66,1],[65,2,66,3],[65,4,66,4],[65,5,66,5],[65,6,66,7],[65,8,66,8],[61,2,61,8],[62,2,62,4],[62,6,62,8],[63,1,64,1],[63,2,64,2],[63,3,64,3],[63,4,64,4],[63,5,64,5],[63,6,64,6],[63,7,64,7],[54,7,55,7],[54,8,55,8],[57,1,57,8],[59,1,60,1],[59,2,59,4],[60,2,60,4],[59,5,60,5],[59,6,59,8],[60,6,60,8],[54,1,55,1],[54,2,55,2],[54,3,55,3],[54,4,55,4],[54,5,55,5],[54,6,55,6],[50,7,51,7],[50,8,51,8],[52,1,53,1],[52,2,53,3],[52,4,53,4],[52,5,53,5],[52,6,53,7],[52,8,53,8],[47,6,47,8],[48,2,48,8],[49,2,49,4],[49,6,49,8],[50,1,51,1],[50,2,51,2],[50,3,51,3],[50,4,51,4],[50,5,51,5],[50,6,51,6],[40,13,41,13],[40,14,41,14],[40,15,41,15],[40,16,41,16],[44,1,44,8],[46,1,47,1],[46,2,46,4],[47,2,47,4],[46,5,47,5],[46,6,46,8],[40,7,41,7],[40,8,41,8],[40,9,41,9],[40,10,41,10],[40,11,41,11],[40,12,41,12],[40,1,41,1],[40,2,41,2],[40,3,41,3],[40,4,41,4],[40,5,41,5],[40,6,41,6],[38,9,39,9],[38,10,39,11],[38,12,39,12],[38,13,39,13],[38,14,39,15],[38,16,39,16],[38,1,39,1],[38,2,39,3],[38,4,39,4],[38,5,39,5],[38,6,39,7],[38,8,39,8],[36,9,37,9],[36,10,37,11],[36,12,37,12],[36,13,37,13],[36,14,37,15],[36,16,37,16],[36,1,37,1],[36,2,37,3],[36,4,37,4],[36,5,37,5],[36,6,37,7],[36,8,37,8],[34,9,35,9],[34,10,35,11],[34,12,35,12],[34,13,35,13],[34,14,35,15],[34,16,35,16],[34,1,35,1],[34,2,35,3],[34,4,35,4],[34,5,35,5],[34,6,35,7],[34,8,35,8],[32,9,33,9],[32,10,33,11],[32,12,33,12],[32,13,33,13],[32,14,33,15],[32,16,33,16],[30,13,31,13],[30,14,31,14],[30,15,31,15],[30,16,31,16],[32,1,33,1],[32,2,33,3],[32,4,33,4],[32,5,33,5],[32,6,33,7],[32,8,33,8],[30,7,31,7],[30,8,31,8],[30,9,31,9],[30,10,31,10],[30,11,31,11],[30,12,31,12],[30,1,31,1],[30,2,31,2],[30,3,31,3],[30,4,31,4],[30,5,31,5],[30,6,31,6],[25,14,27,16],[28,2,28,16],[29,2,29,4],[29,6,29,8],[29,10,29,12],[29,14,29,16],[27,6,27,8],[25,9,27,9],[25,10,25,12],[26,10,26,12],[27,10,27,12],[25,13,27,13],[20,13,21,13],[20,14,21,14],[20,15,21,15],[20,16,21,16],[23,1,23,16],[25,1,27,1],[25,2,27,4],[25,5,27,5],[25,6,25,8],[26,6,26,8],[20,7,21,7],[20,8,21,8],[20,9,21,9],[20,10,21,10],[20,11,21,11],[20,12,21,12],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,6],[18,9,19,9],[18,10,19,11],[18,12,19,12],[18,13,19,13],[18,14,19,15],[18,16,19,16],[18,1,19,1],[18,2,19,3],[18,4,19,4],[18,5,19,5],[18,6,19,7],[18,8,19,8],[16,9,17,9],[16,10,17,11],[16,12,17,12],[16,13,17,13],[16,14,17,15],[16,16,17,16],[16,1,17,1],[16,2,17,3],[16,4,17,4],[16,5,17,5],[16,6,17,7],[16,8,17,8],[14,9,15,9],[14,10,15,11],[14,12,15,12],[14,13,15,13],[14,14,15,15],[14,16,15,16],[12,13,13,13],[12,14,13,14],[12,15,13,15],[12,16,13,16],[14,1,15,1],[14,2,15,3],[14,4,15,4],[14,5,15,5],[14,6,15,7],[14,8,15,8],[12,7,13,7],[12,8,13,8],[12,9,13,9],[12,10,13,10],[12,11,13,11],[12,12,13,12],[12,1,13,1],[12,2,13,2],[12,3,13,3],[12,4,13,4],[12,5,13,5],[12,6,13,6],[9,10,9,12],[7,13,9,13],[7,14,9,16],[10,2,10,16],[11,2,11,4],[11,6,11,8],[11,10,11,12],[11,14,11,16],[5,1,5,16],[7,1,9,1],[7,2,9,4],[7,5,9,5],[7,6,7,8],[8,6,8,8],[9,6,9,8],[7,9,9,9],[7,10,7,12],[8,10,8,12]]}
["Short-Term Investments","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Investments, Debt and Equity Securities [Abstract]"]
["Short-Term Investments","Short-Term Investments"]
[null,"The following table summarizes the Company's short-term investments:"]
[]
[]
[null,null,"Cost Basis",null,null,null,"Gross",null,null,null,"Gross",null,null,null,"Fair Value"]
[{"$nulls":6},"Unrealized",null,null,null,"Unrealized"]
[{"$nulls":6},"Gains",null,null,null,"Losses"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Corporate bonds","$",44254,null,null,"$",27,null,null,"$","(8",")",null,"$",44273]
[]
[null,"U.S. government agency securities",79514,null,null,null,42,null,null,null,"(14",null,")",null,79542]
[]
[null,"U.S. treasury bills",9834,null,null,null,3,null,null,null,"—",null,null,null,9837]
[]
[null,"Commercial paper",5395,null,null,null,2,null,null,null,"—",null,null,null,5397]
[]
[null,"Total","$",138997,null,null,"$",74,null,null,"$","(22",")",null,"$",139049]
[]
[]
[]
[]
[null,null,"Cost Basis",null,null,null,"Gross",null,null,null,"Gross",null,null,null,"Fair Value"]
[{"$nulls":6},"Unrealized",null,null,null,"Unrealized"]
[{"$nulls":6},"Gains",null,null,null,"Losses"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Corporate bonds","$",54969,null,null,"$",79,null,null,"$","(15",")",null,"$",55033]
[]
[null,"U.S. government agency securities",90681,null,null,null,17,null,null,null,"(58",null,")",null,90640]
[]
[null,"U.S. treasury bills",14560,null,null,null,17,null,null,null,"—",null,null,null,14577]
[]
[null,"Commercial paper",4587,null,null,null,4,null,null,null,"—",null,null,null,4591]
[]
[null,"Municipal notes and bonds",1518,null,null,null,"—",null,null,null,"—",null,null,null,1518]
[]
[null,"Total","$",166315,null,null,"$",117,null,null,"$","(73",")",null,"$",166359]
[]
[]
[null,"The following table summarizes the cost basis and fair value of the short-term investments by contractual maturity:"]
[]
[]
[null,null,"Cost",null,null,null,"Fair"]
[null,null,"Basis",null,null,null,"Value"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"One year or less","$",75684,null,null,"$",75709]
[]
[null,"Over one year and less than two years",63313,null,null,null,63340]
[]
[null,"Total","$",138997,null,null,"$",139049]
[]
[]
[]
[]
[null,null,"Cost",null,null,null,"Fair"]
[null,null,"Basis",null,null,null,"Value"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"One year or less","$",110184,null,null,"$",110280]
[]
[null,"Over one year and less than two years",56131,null,null,null,56079]
[]
[null,"Total","$",166315,null,null,"$",166359]
[]
[null,"The Company reviews the individual securities in its portfolio to determine whether a decline in a security’s fair value below the amortized cost basis is other-than-temporary. The Company determined that as of January 31, 2015 and July 31, 2014 there were no securities in its portfolio that were other-than-temporarily impaired. "]
[null,"The following table summarizes the fair value and gross unrealized losses of the Company’s investments with unrealized losses aggregated by type of investment instrument and the length of time that individual securities have been in a continuous unrealized loss position:"]
[]
[]
[null,null,"Less than 12 Months"]
[null,null,"Fair",null,null,null,"Unrealized"]
[null,null,"Value",null,null,null,"Loss"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Corporate bonds","$",15396,null,null,"$","(8",")"]
[]
[null,"U.S. government agency securities",30613,null,null,null,"(14",null,")"]
[]
[null,"Total","$",46009,null,null,"$","(22",")"]
[]
[]
[]
[]
[null,null,"Less than 12 Months"]
[null,null,"Fair",null,null,null,"Unrealized"]
[null,null,"Value",null,null,null,"Loss"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Corporate bonds","$",14101,null,null,"$","(15",")"]
[]
[null,"U.S. government agency securities",57566,null,null,null,"(58",null,")"]
[]
[null,"Total","$",71667,null,null,"$","(73",")"]
[]
[null,"As of January 31, 2015 and July 31, 2014, there were no securities in an unrealized loss position for more than twelve consecutive months."]

{"sheet":"Fair_Value_of_Financial_Instru","index":10,"n_rows":66,"n_cols":16,"rows_kept":66,"cut":false,"hidden":false,"merged":[[10,1,10,16],[11,1,11,16],[12,1,12,16],[37,1,37,16],[64,1,64,16],[65,1,65,16],[4,1,4,16],[5,1,5,16],[6,1,6,16],[7,1,7,16],[8,1,8,16],[9,1,9,16],[62,13,63,13],[62,14,63,14],[62,15,63,15],[62,16,63,16],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,65,0],[3,1,3,16],[62,7,63,7],[62,8,63,8],[62,9,63,9],[62,10,63,10],[62,11,63,11],[62,12,63,12],[62,1,63,1],[62,2,63,2],[62,3,63,3],[62,4,63,4],[62,5,63,5],[62,6,63,6],[60,9,61,9],[60,10,61,11],[60,12,61,12],[60,13,61,13],[60,14,61,15],[60,16,61,16],[60,1,61,1],[60,2,61,3],[60,4,61,4],[60,5,61,5],[60,6,61,7],[60,8,61,8],[58,9,59,9],[58,10,59,11],[58,12,59,12],[58,13,59,13],[58,14,59,15],[58,16,59,16],[58,1,59,1],[58,2,59,3],[58,4,59,4],[58,5,59,5],[58,6,59,7],[58,8,59,8],[56,9,57,9],[56,10,57,11],[56,12,57,12],[56,13,57,13],[56,14,57,15],[56,16,57,16],[56,1,57,1],[56,2,57,3],[56,4,57,4],[56,5,57,5],[56,6,57,7],[56,8,57,8],[54,9,55,9],[54,10,55,11],[54,12,55,12],[54,13,55,13],[54,14,55,15],[54,16,55,16],[54,1,55,1],[54,2,55,3],[54,4,55,4],[54,5,55,5],[54,6,55,7],[54,8,55,8],[52,9,53,9],[52,10,53,11],[52,12,53,12],[52,13,53,13],[52,14,53,15],[52,16,53,16],[51,2,51,4],[51,6,51,8],[51,10,51,12],[51,14,51,16],[52,1,53,1],[52,2,53,3],[52,4,53,4],[52,5,53,5],[52,6,53,7],[52,8,53,8],[49,9,50,9],[49,10,50,11],[49,12,50,12],[49,13,50,13],[49,14,50,15],[49,16,50,16],[49,1,50,1],[49,2,50,3],[49,4,50,4],[49,5,50,5],[49,6,50,7],[49,8,50,8],[47,9,48,9],[47,10,48,11],[47,12,48,12],[47,13,48,13],[47,14,48,15],[47,16,48,16],[45,13,46,13],[45,14,46,14],[45,15,46,15],[45,16,46,16],[47,1,48,1],[47,2,48,3],[47,4,48,4],[47,5,48,5],[47,6,48,7],[47,8,48,8],[45,7,46,7],[45,8,46,8],[45,9,46,9],[45,10,46,10],[45,11,46,11],[45,12,46,12],[44,2,44,4],[44,6,44,8],[44,10,44,12],[44,14,44,16],[45,1,46,1],[45,2,46,2],[45,3,46,3],[45,4,46,4],[45,5,46,5],[45,6,46,6],[41,2,41,16],[42,2,42,4],[42,6,42,8],[42,10,42,12],[42,14,42,16],[43,2,43,4],[43,6,43,8],[43,10,43,12],[43,14,43,16],[35,13,36,13],[35,14,36,14],[35,15,36,15],[35,16,36,16],[38,1,38,16],[40,2,40,4],[40,6,40,8],[40,10,40,12],[40,14,40,16],[35,7,36,7],[35,8,36,8],[35,9,36,9],[35,10,36,10],[35,11,36,11],[35,12,36,12],[35,1,36,1],[35,2,36,2],[35,3,36,3],[35,4,36,4],[35,5,36,5],[35,6,36,6],[33,9,34,9],[33,10,34,11],[33,12,34,12],[33,13,34,13],[33,14,34,15],[33,16,34,16],[33,1,34,1],[33,2,34,3],[33,4,34,4],[33,5,34,5],[33,6,34,7],[33,8,34,8],[31,9,32,9],[31,10,32,11],[31,12,32,12],[31,13,32,13],[31,14,32,15],[31,16,32,16],[31,1,32,1],[31,2,32,3],[31,4,32,4],[31,5,32,5],[31,6,32,7],[31,8,32,8],[29,9,30,9],[29,10,30,11],[29,12,30,12],[29,13,30,13],[29,14,30,15],[29,16,30,16],[29,1,30,1],[29,2,30,3],[29,4,30,4],[29,5,30,5],[29,6,30,7],[29,8,30,8],[27,9,28,9],[27,10,28,11],[27,12,28,12],[27,13,28,13],[27,14,28,15],[27,16,28,16],[26,2,26,4],[26,6,26,8],[26,10,26,12],[26,14,26,16],[27,1,28,1],[27,2,28,3],[27,4,28,4],[27,5,28,5],[27,6,28,7],[27,8,28,8],[24,9,25,9],[24,10,25,11],[24,12,25,12],[24,13,25,13],[24,14,25,15],[24,16,25,16],[24,1,25,1],[24,2,25,3],[24,4,25,4],[24,5,25,5],[24,6,25,7],[24,8,25,8],[22,9,23,9],[22,10,23,11],[22,12,23,12],[22,13,23,13],[22,14,23,15],[22,16,23,16],[20,13,21,13],[20,14,21,14],[20,15,21,15],[20,16,21,16],[22,1,23,1],[22,2,23,3],[22,4,23,4],[22,5,23,5],[22,6,23,7],[22,8,23,8],[20,7,21,7],[20,8,21,8],[20,9,21,9],[20,10,21,10],[20,11,21,11],[20,12,21,12],[19,2,19,4],[19,6,19,8],[19,10,19,12],[19,14,19,16],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,6],[17,2,17,4],[17,6,17,8],[17,10,17,12],[17,14,17,16],[18,2,18,4],[18,6,18,8],[18,10,18,12],[18,14,18,16],[13,1,13,16],[15,2,15,4],[15,6,15,8],[15,10,15,12],[15,14,15,16],[16,2,16,16]]}
["Fair Value of Financial Instruments","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Fair Value Disclosures [Abstract]"]
["Fair Value of Financial Instruments","Fair Value of Financial Instruments"]
[null,"Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be either recorded or disclosed at fair value, the Company considers the principal or most advantageous market in which it would transact, and it also considers assumptions that market participants would use when pricing the asset or liability. Short-term investments are recorded at fair value."]
[null,"The Company determines the fair values of its financial instruments based on a three-level fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The classification of a financial asset or liability within the hierarchy is based upon the lowest level input that is significant to the fair value measurement. The fair value hierarchy prioritizes the inputs into three levels that may be used to measure fair value:"]
[null,"Level 1 — Quoted prices in active markets for identical assets or liabilities."]
[null,"Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument."]
[null,"Level 3 — Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities and reflect the Company's own assumptions in measuring fair value. As of January 31, 2015 and July 31, 2014, the Company had no investments valued as Level 3 investments."]
[null,"Level 1 instruments are valued based on quoted market prices in active markets for identical instruments. Level 1 instruments consist primarily of bank deposits with third-party financial institutions and highly liquid money market securities with original maturities at date of purchase of 90 days or less and are stated at cost, which approximates fair value."]
[null,"Level 2 securities are valued using quoted market prices for similar instruments, non-binding market prices that are corroborated by observable market data, or discounted cash flow techniques, and consist primarily of certain corporate bonds, U.S. government agency securities, U.S. treasury bills, commercial paper, municipal notes, and bonds."]
[null,"There were no transfers between levels during the reporting periods presented."]
[null,"The following table summarizes the fair value measurements of the Company’s cash, cash equivalents and short-term investments:"]
[]
[]
[null,null,"Level 1",null,null,null,"Level 2",null,null,null,"Level 3",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Assets"]
[null,"Cash and cash equivalents:"]
[null,"Cash deposits with third-party financial institutions","$",122634,null,null,"$","—",null,null,"$","—",null,null,"$",122634]
[]
[null,"Money market funds",27815,null,null,null,"—",null,null,null,"—",null,null,null,27815]
[]
[null,"Commercial paper","—",null,null,null,1500,null,null,null,"—",null,null,null,1500]
[]
[null,"Short-term investments:"]
[null,"Corporate bonds","—",null,null,null,44273,null,null,null,"—",null,null,null,44273]
[]
[null,"U.S. government agency securities","—",null,null,null,79542,null,null,null,"—",null,null,null,79542]
[]
[null,"U.S. treasury bills","—",null,null,null,9837,null,null,null,"—",null,null,null,9837]
[]
[null,"Commercial paper","—",null,null,null,5397,null,null,null,"—",null,null,null,5397]
[]
[null,"Total","$",150449,null,null,"$",140549,null,null,"$","—",null,null,"$",290998]
[]
[]
[]
[]
[null,null,"Level 1",null,null,null,"Level 2",null,null,null,"Level 3",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Assets"]
[null,"Cash and cash equivalents:"]
[null,"Cash deposits with third-party financial institutions","$",113303,null,null,"$","—",null,null,"$","—",null,null,"$",113303]
[]
[null,"Money market funds",2291,null,null,null,"—",null,null,null,"—",null,null,null,2291]
[]
[null,"Commercial paper","—",null,null,null,3000,null,null,null,"—",null,null,null,3000]
[]
[null,"Short-term investments:"]
[null,"Corporate bonds","—",null,null,null,55033,null,null,null,"—",null,null,null,55033]
[]
[null,"U.S. government agency securities","—",null,null,null,90640,null,null,null,"—",null,null,null,90640]
[]
[null,"U.S. treasury bills","—",null,null,null,14577,null,null,null,"—",null,null,null,14577]
[]
[null,"Commercial paper","—",null,null,null,4591,null,null,null,"—",null,null,null,4591]
[]
[null,"Municipal notes and bonds","—",null,null,null,1518,null,null,null,"—",null,null,null,1518]
[]
[null,"Total","$",115594,null,null,"$",169359,null,null,"$","—",null,null,"$",284953]
[]
[null,"Other Investments"]
[null,"As of January 31, 2015 and July 31, 2014, the Company had investments in privately-held companies of $3.0 million and $1.8 million, respectively, which are included in other non-current assets in the accompanying Condensed Consolidated Balance Sheets. These investments are recorded at cost and are adjusted to fair value in the event that they become other-than-temporarily impaired. There have been no impairments of these investments recorded in any of the periods presented."]

{"sheet":"Recovered_Sheet1","index":11,"n_rows":75,"n_cols":11,"rows_kept":75,"cut":false,"hidden":false,"merged":[[74,1,74,10],[72,7,73,7],[72,8,73,8],[0,0,1,0],[0,1,0,10],[1,1,1,10],[2,1,2,10],[3,0,74,0],[3,1,3,10],[4,1,4,10],[17,1,17,10],[72,1,73,1],[72,2,73,2],[72,3,73,3],[72,4,73,4],[72,5,73,5],[72,6,73,6],[70,1,71,1],[70,2,71,3],[70,4,71,4],[70,5,71,5],[70,6,71,7],[70,8,71,8],[68,1,69,1],[68,2,69,3],[68,4,69,4],[68,5,69,5],[68,6,69,7],[68,8,69,8],[66,1,67,1],[66,2,67,3],[66,4,67,4],[66,5,67,5],[66,6,67,7],[66,8,67,8],[64,1,65,1],[64,2,65,3],[64,4,65,4],[64,5,65,5],[64,6,65,7],[64,8,65,8],[62,1,63,1],[62,2,63,3],[62,4,63,4],[62,5,63,5],[62,6,63,7],[62,8,63,8],[58,2,58,8],[59,2,59,8],[60,1,61,1],[60,2,61,2],[60,3,61,3],[60,4,61,4],[60,5,61,5],[60,6,61,6],[60,7,61,7],[60,8,61,8],[52,7,53,7],[52,8,53,8],[54,1,54,8],[56,1,57,1],[56,2,56,4],[57,2,57,4],[56,5,57,5],[56,6,56,8],[57,6,57,8],[52,1,53,1],[52,2,53,2],[52,3,53,3],[52,4,53,4],[52,5,53,5],[52,6,53,6],[50,1,51,1],[50,2,51,3],[50,4,51,4],[50,5,51,5],[50,6,51,7],[50,8,51,8],[46,8,47,8],[48,1,49,1],[48,2,49,3],[48,4,49,4],[48,5,49,5],[48,6,49,7],[48,8,49,8],[44,2,44,8],[45,2,45,4],[45,6,45,8],[46,1,47,1],[46,2,47,2],[46,3,47,3],[46,4,47,4],[46,5,47,5],[46,6,47,6],[46,7,47,7],[37,9,38,9],[37,10,38,10],[40,1,40,8],[42,1,43,1],[42,2,42,4],[43,2,43,4],[42,5,43,5],[42,6,42,8],[43,6,43,8],[39,1,39,10],[36,4,36,5],[36,8,36,9],[37,1,38,1],[37,2,38,2],[37,3,38,3],[37,4,38,4],[37,5,38,5],[37,6,38,6],[37,7,38,7],[37,8,38,8],[32,8,33,9],[32,10,33,10],[34,1,35,1],[34,2,35,2],[34,3,35,3],[34,4,35,5],[34,6,35,6],[34,7,35,7],[34,8,35,9],[34,10,35,10],[32,1,33,1],[32,2,33,2],[32,3,33,3],[32,4,33,5],[32,6,33,6],[32,7,33,7],[28,8,29,9],[28,10,29,10],[30,1,31,1],[30,2,31,2],[30,3,31,3],[30,4,31,5],[30,6,31,6],[30,7,31,7],[30,8,31,9],[30,10,31,10],[28,1,29,1],[28,2,29,2],[28,3,29,3],[28,4,29,5],[28,6,29,6],[28,7,29,7],[24,9,25,9],[24,10,25,10],[26,1,27,1],[26,2,27,2],[26,3,27,3],[26,4,27,5],[26,6,27,6],[26,7,27,7],[26,8,27,9],[26,10,27,10],[22,2,22,10],[23,2,23,10],[24,1,25,1],[24,2,25,2],[24,3,25,3],[24,4,25,4],[24,5,25,5],[24,6,25,6],[24,7,25,7],[24,8,25,8],[15,7,16,7],[15,8,16,8],[18,1,18,10],[20,1,21,1],[20,3,21,3],[20,4,20,6],[21,4,21,6],[20,7,21,7],[20,8,20,10],[21,8,21,10],[15,1,16,1],[15,2,16,2],[15,3,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,6],[11,8,12,8],[13,1,14,1],[13,2,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,7],[13,8,14,8],[9,2,9,8],[10,2,10,4],[10,6,10,8],[11,1,12,1],[11,2,12,2],[11,3,12,3],[11,4,12,4],[11,5,12,5],[11,6,12,6],[11,7,12,7],[5,1,5,8],[7,1,8,1],[7,2,7,4],[8,2,8,4],[7,5,8,5],[7,6,7,8],[8,6,8,8]]}
["Condensed Consolidated Balance Sheet Components","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Balance Sheet Components [Abstract]"]
["Condensed Consolidated Balance Sheet Components","Condensed Consolidated Balance Sheet Components"]
[null,"The following tables summarize selected components of the Company's Condensed Consolidated Balance Sheets:"]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Inventory"]
[null,"Raw materials","$",472,null,null,"$",348]
[]
[null,"Finished goods",44801,null,null,null,39488]
[]
[null,"Total","$",45273,null,null,"$",39836]
[]
[]
[]
[]
[null,null,"Estimated",null,"January 31,",null,null,null,"July 31,"]
[null,null,"Useful Lives",null,2015,null,null,null,2014]
[null,null,"(in thousands, except estimated useful lives)"]
[null," Property and Equipment, net"]
[null,"Computer equipment","2 to 5 years",null,"$",26993,null,null,"$",25779]
[]
[null,"Computer software","2 to 5 years",null,19341,null,null,null,16675]
[]
[null,"Machinery and equipment","2 to 5 years",null,42951,null,null,null,36500]
[]
[null,"Furniture and fixtures","2 to 5 years",null,5299,null,null,null,4756]
[]
[null,"Leasehold improvements","1 to 6 years",null,10345,null,null,null,8128]
[]
[null,"Total, gross",null,null,104929,null,null,null,91838]
[]
[null,"Less: accumulated depreciation and amortization",null,null,"(74,569",null,")",null,"(64,577",null,")"]
[null,"Total, net",null,null,"$",30360,null,null,"$",27261]
[]
[null,"Depreciation and amortization expense for property and equipment for the second quarter of fiscal 2015 and 2014 was $4.9 million and $4.8 million, respectively. Depreciation and amortization expense for property and equipment for the first half of fiscal 2015 and 2014 was $10.0 million and $9.5 million, respectively."]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Accrued Liabilities"]
[null,"Compensation and benefits","$",42946,null,null,"$",37737]
[]
[null,"Marketing",27420,null,null,null,24782]
[]
[null,"Other",24855,null,null,null,18059]
[]
[null,"Total","$",95221,null,null,"$",80578]
[]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null," Deferred Revenue"]
[null,"Product","$",59525,null,null,"$",50678]
[]
[null,"Support and professional services",93985,null,null,null,84482]
[]
[null,"Total, current",153510,null,null,null,135160]
[]
[null,"Product, non-current",2629,null,null,null,3497]
[]
[null,"Support and professional services, non-current",44596,null,null,null,41480]
[]
[null,"Total, non-current",47225,null,null,null,44977]
[]
[null,"Total","$",200735,null,null,"$",180137]
[]
[null,"Deferred product revenue relates to arrangements where not all revenue recognition criteria have been met. Deferred support and professional services revenue primarily represents customer payments made in advance for support and professional services contracts. Support contracts are typically billed on an annual basis in advance and revenue is recognized ratably over the support period, typically one to five years. Non-current product deferred revenue relates to software products sold as part of a multiple-element arrangement for which Vendor Specific Objective Evidence (\"VSOE\") had not been established. Revenue for these software products is recognized ratably over the related support period. The primary changes in the deferred revenue balances are due to quarter-end inventory stocking orders of our value-added distributors, growth of annual maintenance contracts from customers, and transactions which have certain acceptance or deployment provisions that will be recognized as revenue when revenue recognition criteria are met."]

{"sheet":"Income_Taxes","index":12,"n_rows":13,"n_cols":2,"rows_kept":13,"cut":false,"hidden":false,"merged":[[0,0,1,0],[3,0,12,0]]}
["Income Taxes","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Income Tax Disclosure [Abstract]"]
["Income Taxes","Income Taxes"]
[null,"The effective tax rate in all periods is the result of the mix of income earned in various tax jurisdictions that apply a broad range of income tax rates. For the second quarter and first half of fiscal 2015, the Company’s effective tax rates differ from the tax computed at the U.S. federal statutory income tax rate due primarily to state taxes, non-deductible stock-based compensation, and losses in foreign operations with no tax benefit. Future effective tax rates could be adversely affected if earnings are lower than anticipated in countries with lower statutory tax rates or by unfavorable changes in tax laws and regulations or their interpretation. The Company’s effective tax rates were 72.7% and 207.3% for the second quarter of fiscal 2015 and 2014, respectively, and 72.4% and 116.0% for the first half of fiscal 2015 and 2014, respectively."]
[null,"For the second quarter and first half of fiscal 2015, the Company computed the provision for income taxes based on the projected annual effective tax rate, as the Company determined that small changes in the estimated income or loss between tax jurisdictions would not result in significant fluctuations in the estimated annual effective tax rate."]
[null,"For the second quarter and first half of fiscal 2014, the Company’s effective tax rates differ from the tax computed at the U.S. federal statutory income tax rate primarily due to non-deductible stock-based compensation, foreign operations, and fixed amortization of deferred tax charges related to the fiscal 2012 intercompany sale of intellectual property rights. For the second quarter and first half fiscal 2014, the Company computed the quarterly provision for income taxes based on the actual tax rate, as the Company determined that small changes in the estimated income or loss between tax jurisdictions would result in significant changes in the estimated annual effective tax rate."]
[null,"The difference in the effective tax rates between the second quarter of fiscal 2015 and 2014 and the effective tax rates between the first half of fiscal 2015 and 2014 are primarily due to the tax benefits recognized in the second quarter and first half of fiscal 2015 relating to the reinstatement of the U.S. federal research credit, a difference in the mix of earnings among jurisdictions with different tax rates, and a reduction in deferred tax charges in the second quarter and first half of fiscal 2015. In the second quarter of fiscal 2015, the “Tax Increase Prevention Act of 2014 (“2014 Act”) was signed into law, thereby extending the U.S. federal research and development credit through December 31, 2014."]
[null,"In fiscal 2012, the Company implemented a new corporate organizational structure to more closely align its corporate organization with the international nature of its business activities and to reduce its overall effective tax rate through changes in how it develops and uses its intellectual property and the structure of its international procurement and sales, including transfer-price arrangements for intercompany transactions. Therefore, the Company incurred and recorded IP structure charges starting in fiscal 2012. The Company also records deferred charges on other intra-entity transfers of intangible properties as they occur."]
[null,"IP structure charges consist primarily of non-recurring gains recognized in the U.S. related to the international restructuring of the Company’s corporate organization during fiscal 2012, including the transfer of certain IP and inventory overseas. The “Amortization of deferred tax charge on IP restructuring” consists of taxes paid that resulted from intra-entity transfers and that are deferred and amortized for financial reporting purposes under Accounting Standards Codification (“ASC”) 740-10-25-3(e), Income Taxes, and ASC 810-10-45-8, Consolidation. For fiscal 2014, 2013 and 2012, the corporate reorganization resulted in an increase to the effective tax rate due to a non-recurring gain triggered in the U.S. related to the reorganization as described above. As of July 31, 2014, the Company had largely amortized the deferred charges from its fiscal 2012 international restructuring of the Company’s corporate organization. The Company continues to record amortization of deferred tax charges on other similar intra-entity transfers that occurred after fiscal 2012. As of January 31, 2015, the balance in prepaids and other assets and other non-current assets was $1.0 million and $1.5 million, respectively. The deferred charge is amortized on a straight-line basis as a component of income tax expense over three to eleven years, based on the economic life of the intellectual property, and will increase the Company's effective tax rate during the amortization period. The deferred charges resulted in a 1.6 point increase to the projected annual effective tax rate as of January 31, 2015, from 75.9% to 77.5%."]
[null,"Each fiscal quarter, the Company assesses the likelihood that it will be able to recover its deferred tax assets. The Company will reduce a deferred tax asset by a valuation allowance if it is \"more likely than not\" that some portion or all of the deferred tax asset will not be realized. A deferred tax asset is recorded when there is a future deductible amount, but a valuation allowance is needed if taxable income is anticipated to be insufficient to realize the future deductible amount. The Company considers available evidence, both positive and negative, including historical levels of income, expectations and risks associated with estimates of future taxable income, and ongoing prudent and feasible tax planning strategies in assessing the need for the valuation allowance. "]
[null,"The Company believes that its California tax research credit carryforwards are not more likely than not to be realized and thus recorded a partial valuation allowance in its fiscal 2013 financial statements. In the first half of fiscal 2015, the Company recorded an increase in the valuation allowance of $1.0 million relating to this item. It is reasonably possible that a material increase in the valuation allowance could occur in the future depending on changes, if any, in the mix of earnings in the jurisdictions in which the Company operates, the percentage of revenue from California customers, the Company's evaluation of prudent and feasible tax planning strategies, the Company's expectation of exercising elections available under the applicable tax laws, or the Company's projections of the future growth and forecasted earnings. An increase to the valuation allowance would have the effect of increasing the income tax provision in the Condensed Consolidated Statements of Operations."]
[null,"The Company files income tax returns in the following jurisdictions: U.S. federal jurisdiction, various U.S. state and local jurisdictions, and various foreign jurisdictions. Due to the Company's net operating loss and credit carryforwards, substantially all years are subject to examination. There are no material income tax audits currently in progress as of January 31, 2015, with the exception of India. The Company is currently under exam in India, however the Company believes that its reserves are adequate for any potential settlement payment."]

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["Equity Incentive Plans and Benefit Plans","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Disclosure of Compensation Related Costs, Share-based Payments [Abstract]"]
["Equity Incentive Plans and Benefit Plans","Equity Incentive Plans and Benefit Plans"]
[null,"Stock Option and Award Activity"]
[null,"The following table summarizes information about shares available for grant and outstanding stock option activity: "]
[]
[]
[{"$nulls":5},"Options Outstanding"]
[null,null,"Shares",null,null,"Number of",null,null,"Weighted",null,null,null,"Weighted",null,"Aggregate"]
[null,null,"Available for",null,null,"Shares",null,null,"Average",null,null,null,"Average",null,"Intrinsic"]
[null,null,"Grant",{"$nulls":5},"Exercise",null,null,null,"Remaining",null,"Value"]
[{"$nulls":8},"Price",null,null,null,"Contractual",null,"(in thousands)"]
[{"$nulls":8},"per Share",null,null,null,"Term (Years)"]
[null,"Balance at July 31, 2013",557585,null,null,10047569,null,null,"$",6.29,null,null,2.9,null,"$",121227]
[]
[null,"Shares reserved for issuance",5670469]
[]
[null,"Restricted stock awards granted","(4,350,155",")"]
[]
[null,"Restricted stock awards forfeited",1238196]
[]
[null,"Options exercised","—",null,null,"(2,778,312",")",null,3.73,{"$nulls":5},42871]
[]
[null,"Options cancelled",131142,null,null,"(131,142",")",null,19.98]
[]
[null,"Balance at July 31, 2014",3247237,null,null,7138115,null,null,7.03,null,null,null,2,null,82533]
[]
[null,"Shares reserved for issuance",5377830]
[]
[null,"Restricted stock awards granted","(2,441,672",")"]
[]
[null,"Restricted stock awards forfeited",1016745]
[]
[null,"Market stock units granted","(595,000",")"]
[]
[null,"Market stock units forfeited",30000]
[]
[null,"Options exercised","—",null,null,"(1,996,705",")",null,3.89,{"$nulls":5},32147]
[]
[null,"Options cancelled",15547,null,null,"(15,547",")",null,21.82]
[]
[null,"Balance at January 31, 2015",6650687,null,null,5125863,null,null,"$",8.2100000000000009,null,null,1.6,null,"$",49331]
[]
[null,"Restricted Stock Award Activity"]
[null,"The following table summarizes information about non-vested restricted stock awards and units: "]
[]
[]
[null,null,"Shares",null,null,"Weighted "]
[{"$nulls":5},"Average"]
[{"$nulls":5},"Grant Date"]
[{"$nulls":5},"Fair Value"]
[{"$nulls":5},"per Share"]
[null,"Balance at July 31, 2013",10787754,null,null,"$",18.87]
[]
[null,"Awards granted",4350155,null,null,18.670000000000002]
[]
[null,"Awards vested","(5,009,273",")",null,19.07]
[]
[null,"Awards forfeited","(1,238,196",")",null,19.28]
[]
[null,"Balance at July 31, 2014",8890440,null,null,18.61]
[]
[null,"Awards granted",2441672,null,null,22.82]
[]
[null,"Awards vested","(2,520,714",")",null,20.420000000000002]
[]
[null,"Awards forfeited","(1,016,745",")",null,19.170000000000002]
[]
[null,"Balance at January 31, 2015",7794653,null,null,"$",19.260000000000002]
[]
[null,"Fair Value Disclosures"]
[null,"Employee Stock Options"]
[null,"The fair value of each option is estimated on the date of grant using the Black-Scholes model. There were no stock options granted during the reporting periods presented."]
[null,"Employee Stock Purchase Plan"]
[null,"The fair value of the purchase right for the Employee Stock Purchase Plan (\"ESPP\") is estimated on the date of grant using the Black-Scholes model with the following weighted average assumptions:"]
[]
[]
[null,null,"Six Months Ended January 31,"]
[null,null,2015,null,2014]
[null,"Risk-free interest rates","0.1% to 0.5%",null,"0.1% to 0.4%"]
[null,"Expected term (in years)","0.5 to 2.0",null,"0.5 to 2.0"]
[null,"Dividend yield","—%",null,"—%"]
[null,"Volatility","37.7% to 49.8%",null,"57.2% to 64.4%"]
[null,"The following table summarizes the shares issued and the weighted average purchase price per share for each ESPP purchase date during the first half of fiscal 2015 and 2014:"]
[]
[]
[null,null,"September 1,",null,null,null,"September 1,"]
[null,null,2014,null,null,null,2013]
[null,"Shares issued",565396,null,null,null,432749]
[]
[null,"Weighted average purchase price per share","$",14.64,null,null,"$",14.12]
[]
[null,"Market Stock Units"]
[null,"In September 2014, the Compensation Committee of the Company's Board of Directors approved the adoption of the Market Stock Unit program with the purpose of aligning key management and senior leadership with stockholders' interests over the long-term and to retain key employees. Market Stock Unit (\"MSU\") awards are granted under the Company's 2007 Equity Incentive Plan."]
[null,"In the first quarter of 2015, the Company granted 595,000 MSUs, with 100% of the shares to be earned upon the achievement of an objective relative total stockholder return measured over a three-year performance period. There were no MSU awards granted during the second quarter of fiscal 2015."]
[null,"Each MSU award granted in the first quarter of fiscal 2015 contains three separate tranches of an equal number of shares, with 100% of the shares of Tranche 1, Tranche 2, and Tranche 3 to be earned based on the achievement of an objective total stockholder return measured over one-year, two-year and three-year performance periods, respectively. MSUs will be awarded and fully vested upon the Compensation Committee's certification of the level of achievement following the performance period of each tranche. MSU participants have the ability to receive up to 150% of the target number of shares initially granted."]
[null,"The fair value of each MSU award is determined by multiplying the fair value per share by the underlying number of shares. The fair value per share was determined on the grant date using the Monte Carlo valuation methodology and the assumptions described in the table below. The fair value per share for Tranche 1, Tranche 2, and Tranche 3 is $28.10, $26.90 and $26.74, respectively. The Company amortizes the fair value of each MSU award using the graded-vesting method, adjusted for estimated forfeitures. Stock-based compensation expense associated with participants who fulfill their requisite service period is not reversed even if the performance conditions are not met. However, stock-based compensation expense is reversed for participants who forfeit their MSU awards prior to fulfilling their requisite service period."]
[null,"The fair value of the MSUs granted during the first half of fiscal 2015 was estimated using the following weighted-average assumptions:"]
[]
[]
[null,null,"Six Months Ended"]
[null,null,"January 31, 2015"]
[null,"Risk-free interest rates",1.03E-2]
[null,"Expected term (in years)",2.87]
[null,"Dividend yield","—%"]
[null,"Volatility",0.50729999999999997]
[null,"As of January 31, 2015, the shares awarded under the MSU program have yet to be earned. The following table summarizes information about the MSU awards granted in the first half of fiscal 2015:"]
[]
[]
[null,null,"Target",null,null,"Maximum"]
[null,null,"Shares",null,null,"Shares Eligible"]
[null,null,"Granted",null,null,"to Receive"]
[null,"Balance at July 31, 2014"]
[]
[null,"Awarded",595000,null,null,892500]
[]
[null,"Forfeited","(30,000",")",null,"—"]
[]
[null,"Earned","—",null,null,"—"]
[]
[null,"Balance at January 31, 2015",565000,null,null,892500]
[]
[null,"The following table summarizes information about the outstanding MSUs at January 31, 2015:"]
[]
[]
[null,null,"Number of",null,null,"Weighted",null,"Aggregate"]
[null,null,"Shares",null,null,"Average Remaining Contractual Life ",null,"Intrinsic"]
[{"$nulls":7},"Value (*)"]
[{"$nulls":5},"(years)",null,"(in thousands)"]
[null,"MSUs outstanding",565000,null,null,2.5,null,"$",9368]
[]
[null,"MSUs vested and expected to vest",531773,null,null,2.5,null,"$",8817]
[]
[null,"(*) The intrinsic value is calculated as the market value as of the end of the fiscal period. As reported by the NASDAQ Global Select Market, the market value at January 31, 2015 was $16.58."]
[null,"Stock-based Compensation Expense"]
[null,"Stock-based compensation expense consists primarily of expenses for stock options, restricted stock awards, MSUs, and employee stock purchase rights granted to employees. The following table summarizes stock-based compensation expense recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Cost of revenue","$",1745,null,null,"$",2202,null,null,"$",3444,null,null,"$",4360]
[]
[null,"Research and development",8977,null,null,null,11306,null,null,null,18541,null,null,null,22114]
[]
[null,"Sales and marketing",8902,null,null,null,11071,null,null,null,18478,null,null,null,21382]
[]
[null,"General and administrative",3844,null,null,null,4165,null,null,null,7558,null,null,null,8307]
[]
[null,"Restructuring charges","—",null,null,null,"—",null,null,null,273,null,null,null,"—"]
[]
[null,"Total","$",23468,null,null,"$",28744,null,null,"$",48294,null,null,"$",56163]
[]
[null,"The following table presents stock-based compensation expense by award-type:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Stock options","$",333,null,null,"$",1259,null,null,"$",1016,null,null,"$",2958]
[]
[null,"Stock awards",18631,null,null,null,25098,null,null,null,39438,null,null,null,48932]
[]
[null,"Employee stock purchase plan",1950,null,null,null,2387,null,null,null,4073,null,null,null,4273]
[]
[null,"Market stock units",2554,null,null,null,"—",null,null,null,3767,null,null,null,"—"]
[]
[null,"Total","$",23468,null,null,"$",28744,null,null,"$",48294,null,null,"$",56163]
[]
[null,"Stock Repurchase Program"]
[null,"As of January 31, 2015, the Company's Board of Directors had authorized a stock repurchase program for an aggregate amount of up to $500.0 million (consisting of an original $100.0 million authorization on June 13, 2012, plus subsequent authorizations of $100.0 million on July 15, 2013, $100.0 million on October 9, 2013, and $200.0 million on February 20, 2014). "]
[null,"The Company is authorized to make repurchases in the market until the Board of Directors terminates the program or until such repurchases reach the authorized amount, whichever occurs first. Any repurchases under the program will be funded either from available working capital or external financing. The number of shares repurchased and the timing of repurchases are based on the price of the Company's common stock, general business and market conditions, and other investment considerations. Shares are retired upon repurchase. The Company's policy related to repurchases of its common stock is to charge any excess of cost over par value entirely to additional paid-in capital."]
[null,"During the second quarter and first half of fiscal 2015, the Company repurchased a total of 4,181,863 and 5,309,470 shares for a total purchase price of $80.0 million and $105.0 million, respectively. During the second quarter and first half of fiscal 2014, the Company repurchased a total of 4,653,460 and 11,017,240 shares for a total purchase price of $80.0 million and $193.5 million, respectively. As of January 31, 2015, remaining funds available under the stock repurchase program totaled $25.9 million."]

{"sheet":"Restructuring_Charges","index":14,"n_rows":47,"n_cols":13,"rows_kept":47,"cut":false,"hidden":false,"merged":[[6,1,6,12],[7,1,7,12],[8,1,8,12],[29,1,29,12],[30,1,30,12],[31,1,31,12],[46,7,47,7],[46,8,47,8],[0,0,1,0],[0,1,0,12],[1,1,1,12],[2,1,2,12],[3,0,47,0],[3,1,3,12],[4,1,4,12],[5,1,5,12],[46,1,47,1],[46,2,47,2],[46,3,47,3],[46,4,47,4],[46,5,47,5],[46,6,47,6],[44,1,45,1],[44,2,45,3],[44,4,45,4],[44,5,45,5],[44,6,45,7],[44,8,45,8],[42,1,43,1],[42,2,43,3],[42,4,43,4],[42,5,43,5],[42,6,43,7],[42,8,43,8],[40,1,41,1],[40,2,41,3],[40,4,41,4],[40,5,41,5],[40,6,41,7],[40,8,41,8],[37,2,37,8],[38,1,39,1],[38,2,39,2],[38,3,39,3],[38,4,39,4],[38,5,39,5],[38,6,39,6],[38,7,39,7],[38,8,39,8],[27,12,28,12],[33,1,33,8],[35,2,35,4],[35,6,35,8],[36,2,36,4],[36,6,36,8],[32,1,32,12],[27,6,28,6],[27,7,28,7],[27,8,28,8],[27,9,28,9],[27,10,28,10],[27,11,28,11],[24,10,25,11],[24,12,25,12],[26,2,26,3],[26,6,26,7],[26,10,26,11],[27,1,28,1],[27,2,28,2],[27,3,28,3],[27,4,28,4],[27,5,28,5],[22,9,23,9],[22,10,23,11],[22,12,23,12],[24,1,25,1],[24,2,25,3],[24,4,25,4],[24,5,25,5],[24,6,25,7],[24,8,25,8],[24,9,25,9],[20,9,21,9],[20,10,21,10],[20,11,21,11],[20,12,21,12],[22,1,23,1],[22,2,23,3],[22,4,23,4],[22,5,23,5],[22,6,23,7],[22,8,23,8],[18,10,19,11],[18,12,19,12],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,6],[20,7,21,7],[20,8,21,8],[17,2,17,3],[17,6,17,7],[17,10,17,11],[18,1,19,1],[18,2,19,3],[18,4,19,4],[18,5,19,5],[18,6,19,7],[18,8,19,8],[18,9,19,9],[13,12,14,12],[15,1,16,1],[15,2,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,7],[15,8,16,8],[15,9,16,9],[15,10,16,11],[15,12,16,12],[13,6,14,6],[13,7,14,7],[13,8,14,8],[13,9,14,9],[13,10,14,10],[13,11,14,11],[9,1,9,12],[11,2,11,4],[11,6,11,8],[11,10,11,12],[12,2,12,12],[13,1,14,1],[13,2,14,2],[13,3,14,3],[13,4,14,4],[13,5,14,5]]}
["Restructuring Charges","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Restructuring and Related Activities [Abstract]"]
["Restructuring Charges","Restructuring Charges"]
[null,"In August 2014, the Company announced a restructuring plan to optimize its administrative and operational costs by realigning its workforce to better reflect the Company's operations and scaling the Company with a global infrastructure. While the Company has reduced its workforce and relocated certain personnel functions to lower cost regions, the Company continues hiring to support the expansion of its global go-to-market strategy as well as to support continued product innovation."]
[null,"At the time of the announcement, the Company expected a reduction of up to 66 positions, or 3.7% of its global workforce, and the relocation of up to 75 positions, or 4.2% of its global workforce, to the Company’s facilities located in Portland, Oregon, Bangalore, India, and Cork, Ireland."]
[null,"At the time of the announcement, the Company projected pre-tax restructuring charges of between approximately $6.0 million and $8.0 million, consisting primarily of severance, other termination benefits and other associated costs. During the first half of fiscal 2015, the Company has recognized $6.1 million in restructuring charges. As of January 31, 2015, the Company expects pre-tax restructuring charges to be in the low end of the range, with the majority of the charges recognized during the first half of fiscal 2015."]
[null,"During the second quarter of fiscal 2015, the restructuring plan resulted in a net reduction to the restructuring reserve of $0.5 million, primarily as a result of savings of $0.4 million related to unpaid employee severance benefits due to changes in planned terminations (e.g., role reassignment) and savings of $0.3 million related to unused insurance and outplacement costs, as impacted employees integrated into the job market faster than anticipated. These savings were partially offset by additional charges of $0.2 million related to third party professional services directly associated with the restructuring."]
[null,"The following table summarizes the restructuring activities through January 31, 2015:"]
[]
[]
[null,null,"Employee Severance and Benefits",null,null,null,"Other",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014","$","—",null,null,"$","—",null,null,"$","—"]
[]
[null,"Gross charges",6203,null,null,null,351,null,null,null,6554]
[]
[null,"Cash payments","(2,743",null,")",null,"(351",null,")",null,"(3,094",null,")"]
[null,"Non-cash charges","(273",null,")",null,"—",null,null,null,"(273",null,")"]
[]
[null,"Balance at October 31, 2014","$",3187,null,null,"$","—",null,null,"$",3187]
[]
[null,"Gross charges",58,null,null,null,228,null,null,null,286]
[]
[null,"Change in estimate related to first quarter of fiscal 2015","(768",null,")",null,"—",null,null,null,"(768",null,")"]
[]
[null,"Cash payments","(1,874",null,")",null,"(228",null,")",null,"(2,102",null,")"]
[null,"Balance at January 31, 2015","$",603,null,null,"$","—",null,null,"$",603]
[]
[null,"The balance of restructuring charges accrued at January 31, 2015 totaled $0.6 million and is included in accrued liabilities in the Condensed Consolidated Balance Sheet as of January 31, 2015."]
[null,"Other One-time Charges"]
[null,"In connection with the restructuring plan, the Company has also incurred certain other one-time charges, consisting primarily of redundant salaries, recruiting services and travel related expenses, and other related charges. Under U.S. GAAP, these charges do not qualify for presentation in the restructuring charges line of the Condensed Consolidated Statements of Operations. Thus, such expenses are reflected in their related functional departments. At the time of the announcement, the Company projected these other one-time charges would be between approximately $2.3 million and $4.3 million. Through January 31, 2015, the Company has recognized $1.5 million in other one-time charges related to restructuring actions, of which $1.1 million was recognized in the second quarter of fiscal 2015. As of January 31, 2015, the Company expects these other one-time charges to be in the low end of the range, with the majority of the charges to be recognized during the first nine months of fiscal 2015. "]
[null,"The following table summarizes other one-time charges recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended",null,null,null,"Six Months Ended"]
[null,null,"January 31, 2015",null,null,null,"January 31, 2015"]
[null,null,"(in thousands)"]
[null,"Cost of revenue","$",26,null,null,"$",27]
[]
[null,"Research and development",7,null,null,null,7]
[]
[null,"Sales and marketing",286,null,null,null,370]
[]
[null,"General and administrative",792,null,null,null,1139]
[]
[null,"Total","$",1111,null,null,"$",1543]

{"sheet":"Segment_Information_and_Signif","index":15,"n_rows":53,"n_cols":16,"rows_kept":53,"cut":false,"hidden":false,"merged":[[6,1,6,16],[22,1,22,16],[29,1,29,16],[30,1,30,16],[39,1,39,16],[40,1,40,16],[52,7,53,7],[52,8,53,8],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,53,0],[3,1,3,16],[4,1,4,16],[5,1,5,16],[52,1,53,1],[52,2,53,2],[52,3,53,3],[52,4,53,4],[52,5,53,5],[52,6,53,6],[50,1,51,1],[50,2,51,3],[50,4,51,4],[50,5,51,5],[50,6,51,7],[50,8,51,8],[48,1,49,1],[48,2,49,3],[48,4,49,4],[48,5,49,5],[48,6,49,7],[48,8,49,8],[45,2,45,8],[46,1,47,1],[46,2,47,2],[46,3,47,3],[46,4,47,4],[46,5,47,5],[46,6,47,6],[46,7,47,7],[46,8,47,8],[41,1,41,8],[43,1,44,1],[43,2,43,4],[44,2,44,4],[43,5,44,5],[43,6,43,8],[44,6,44,8],[20,16,21,16],[23,1,23,8],[25,2,25,4],[25,6,25,8],[31,1,31,4],[33,1,34,1],[33,3,34,3],[20,10,21,10],[20,11,21,11],[20,12,21,12],[20,13,21,13],[20,14,21,14],[20,15,21,15],[18,16,19,16],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,6],[20,7,21,7],[20,8,21,8],[20,9,21,9],[18,8,19,8],[18,9,19,9],[18,10,19,11],[18,12,19,12],[18,13,19,13],[18,14,19,15],[16,10,17,11],[16,12,17,12],[16,13,17,13],[16,14,17,15],[16,16,17,16],[18,1,19,1],[18,2,19,3],[18,4,19,4],[18,5,19,5],[18,6,19,7],[14,13,15,13],[14,14,15,15],[14,16,15,16],[16,1,17,1],[16,2,17,3],[16,4,17,4],[16,5,17,5],[16,6,17,7],[16,8,17,8],[16,9,17,9],[12,16,13,16],[14,1,15,1],[14,2,15,3],[14,4,15,4],[14,5,15,5],[14,6,15,7],[14,8,15,8],[14,9,15,9],[14,10,15,11],[14,12,15,12],[12,10,13,10],[12,11,13,11],[12,12,13,12],[12,13,13,13],[12,14,13,14],[12,15,13,15],[11,2,11,16],[12,1,13,1],[12,2,13,2],[12,3,13,3],[12,4,13,4],[12,5,13,5],[12,6,13,6],[12,7,13,7],[12,8,13,8],[12,9,13,9],[7,1,7,16],[9,2,9,8],[9,10,9,16],[10,2,10,4],[10,6,10,8],[10,10,10,12],[10,14,10,16]]}
["Segment Information and Significant Customers","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Segment Reporting [Abstract]"]
["Segment Information and Significant Customers","Segment Information and Significant Customers"]
[null,"The Company operates as one reportable and operating segment. The Company derives its revenue primarily from sales of Mobility Controllers with ArubaOS operating system software, controller-less and controller-managed wireless access points, Mobility Access Switches, value-added security software modules, access management system solutions, multi-vendor management software, mobility management solutions and other software, and support and professional services."]
[null,"A reportable segment is defined as a component of an enterprise for which separate financial information is available and is evaluated regularly by the chief operating decision maker (\"CODM\"), or decision making group, for resource allocation and for assessing performance. The Company’s CODM is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. Revenue is attributed by geographic location based on the ship-to location of the Company’s customers."]
[null,"The following table summarizes the Company's total revenue by geographic region:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"United States","$",134931,null,null,"$",113890,null,null,"$",267696,null,null,"$",222205]
[]
[null,"Europe, Middle East and Africa",42706,null,null,null,33768,null,null,null,87563,null,null,null,59764]
[]
[null,"Asia Pacific",29188,null,null,null,24260,null,null,null,55194,null,null,null,47254]
[]
[null,"Rest of World",6106,null,null,null,4438,null,null,null,10299,null,null,null,8060]
[]
[null,"Total","$",212931,null,null,"$",176356,null,null,"$",420752,null,null,"$",337283]
[]
[null,"The following table presents significant channel partners contributing 10% or more of total revenue:"]
[]
[]
[null,null,"Three Months Ended January 31,",null,null,null,"Six Months Ended January 31,"]
[null,null,2015,null,2014,null,2015,null,2014]
[null,"ScanSource, Inc.",0.17399999999999999,null,0.20300000000000001,null,0.17499999999999999,null,0.20799999999999999]
[null,"Synnex Corp.","*",null,0.109,null,0.11,null,0.122]
[null,"(*) Indicates less than 10%."]
[null,"The following table presents significant channel partners accounting for 10% or more of the balance of net accounts receivable: "]
[]
[]
[null,null,"January 31,",null,"July 31,"]
[null,null,2015,null,2014]
[null,"ScanSource, Inc.",0.111,null,0.17199999999999999]
[null,"Synnex Corp.","*",null,0.11799999999999999]
[null,"Avnet Logistics U.S. LP",0.16600000000000001,null,0.153]
[null,"Dell, Inc.","*",null,0.115]
[null,"(*) Indicates less than 10%."]
[null,"The following table summarizes the Company's property and equipment by geographic region based on the location of the asset:"]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"United States","$",20217,null,null,"$",18242]
[]
[null,"India",5907,null,null,null,4894]
[]
[null,"All other countries",4236,null,null,null,4125]
[]
[null,"Total","$",30360,null,null,"$",27261]

{"sheet":"Commitments_and_Contingencies","index":16,"n_rows":61,"n_cols":5,"rows_kept":61,"cut":false,"hidden":false,"merged":[[60,1,60,4],[32,1,32,4],[33,1,33,4],[34,1,34,4],[35,1,35,4],[36,1,36,4],[59,1,59,4],[8,1,8,4],[9,1,9,4],[10,1,10,4],[11,1,11,4],[12,1,12,4],[31,1,31,4],[0,0,1,0],[0,1,0,4],[1,1,1,4],[2,1,2,4],[3,0,60,0],[3,1,3,4],[4,1,4,4],[5,1,5,4],[6,1,6,4],[7,1,7,4],[54,1,55,1],[54,2,55,3],[54,4,55,4],[56,2,56,3],[57,1,58,1],[57,2,58,2],[57,3,58,3],[57,4,58,4],[48,1,48,4],[50,2,50,4],[51,2,51,4],[52,1,53,1],[52,2,53,2],[52,3,53,3],[52,4,53,4],[43,1,44,1],[43,2,44,3],[43,4,44,4],[45,2,45,3],[46,1,47,1],[46,2,47,2],[46,3,47,3],[46,4,47,4],[37,1,37,4],[39,2,39,4],[40,2,40,4],[41,1,42,1],[41,2,42,2],[41,3,42,3],[41,4,42,4],[27,1,28,1],[27,2,28,3],[27,4,28,4],[29,1,30,1],[29,2,30,2],[29,3,30,3],[29,4,30,4],[23,1,24,1],[23,2,24,3],[23,4,24,4],[25,1,26,1],[25,2,26,3],[25,4,26,4],[19,1,20,1],[19,2,20,3],[19,4,20,4],[21,1,22,1],[21,2,22,3],[21,4,22,4],[13,1,13,4],[15,2,15,4],[16,2,16,4],[17,1,18,1],[17,2,18,2],[17,3,18,3],[17,4,18,4]]}
["Commitments and Contingencies","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Commitments and Contingencies Disclosure [Abstract]"]
["Commitments and Contingencies","Commitments and Contingencies"]
[null,"Legal Matters"]
[null,"The Company reviews all legal matters at least quarterly and assesses whether an accrual for loss contingencies needs to be recorded. The assessment reflects the impact of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case. The Company records an accrual for loss contingencies when management believes that it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Legal matters are subject to uncertainties and are inherently unpredictable; however, the Company believes that it has valid defenses with respect to its pending legal matters. Actual liability in any such matters may be materially different from the Company's estimates, which could result in the need to adjust the liability and record additional expenses. Patent litigation in particular is subject to significant postural shifts over short time frames, making the Company’s ability to assess probable liability particularly speculative in any given fiscal quarter even though the matter may be resolved in the next fiscal quarter. If an unfavorable resolution were to occur, there exists the possibility of a material adverse impact on the Company's consolidated financial condition, results of operations or cash flows for the period in which the resolution occurs or in future periods."]
[null,"The Company is involved in disputes, claims, litigation, investigations, proceedings and other legal actions, consisting of intellectual property, commercial, securities, and employment matters from time to time that arise in the ordinary course of business, including the legal matters identified below."]
[null,"U.S. Federal Court Class Action Litigation. On May 23, 2013, a purported stockholder class action lawsuit captioned Mazzafero v. Aruba Networks, Inc., et al., was filed in the United States District Court for the Northern District of California against the Company and certain of its officers. The purported class action alleges claims for violations of the federal securities laws, and seeks unspecified compensatory damages and other relief. On August 1, 2014, the Court dismissed the case but granted leave to amend. On September 26, 2014, the purported class filed an amended complaint which made allegations similar in nature to those in the original complaint. On October 27, 2014, the Company filed a motion to dismiss the amended complaint. On February 2, 2015, the Court granted Company’s motion to dismiss and entered judgment in favor of the Company. On February 23, 2015, Mazzafero filed a notice of appeal in the United States Court of Appeals for the Ninth Circuit appealing the decision of the district court. The Company believes it has meritorious defenses to these claims and will defend this litigation vigorously."]
[null,"Azalea Networks China Lawsuit. In March 2011, a former customer (the \"Plaintiff\") of Azalea Networks (\"Azalea\"), a Chinese entity acquired by the Company on September 2, 2010, filed a lawsuit in Beijing, China, against the Company. The Plaintiff alleged breach of contract for the failure of certain products to perform according to specifications. The Company believed it had meritorious defenses to these claims and defended this litigation vigorously. On December 24, 2014, the Company and the Plaintiff reached a settlement agreement, which was consented to by the former Azalea shareholders, under which the Company agreed to make a cash payment to the Plaintiff of $750,000 in consideration for the release of the Company's liability for the alleged defective products. Pursuant to the merger agreement entered in connection with the acquisition of Azalea, the Company made a claim against the escrow shares seeking full reimbursement of the legal settlement payment. As a result, 40,560 shares with a fair value of approximately $750,000 (determined on the settlement date) were returned to the Company and recorded as a gain offsetting the legal settlement expense. The remaining shares, which have been held in escrow pending completion of this matter, were released and distributed to the former Azalea shareholders."]
[null,"Shareholders Class Action. On March 9, 2015, a shareholder class action complaint was filed in the Court of Chancery of the State of Delaware, captioned Ballester v. Aruba Networks, Inc., et al., C.A. No. 10765 (Del. Ch. filed March 9, 2015), on behalf of a purported class of Aruba shareholders and naming as defendants Aruba, Aruba's Board of Directors, Hewlett-Packard Company, and Aspen Acquisition Sub, Inc., a wholly-owned subsidiary of Hewlett-Packard Company. For further information, refer to Note 12, Subsequent Events, of the Notes to Condensed Consolidated Financial Statements."]
[null,"In addition, these actions or other third-party claims against the Company may cause the Company to incur costly litigation and/or substantial settlement charges. Furthermore, the outcome of any patent related matters may require the Company to make ongoing royalty payments, which could adversely affect gross margins in future periods. If any of those events were to occur, the Company's business, financial condition, results of operations, and cash flows could be adversely affected in any particular period by an unfavorable resolution of one or more of these contingencies."]
[null,"Lease Obligations"]
[null,"The Company leases office space under non-cancelable operating leases with various expiration dates through March 2023. The following table summarizes the Company's future minimum lease payments under non-cancelable operating leases at January 31, 2015:"]
[]
[]
[null,null,"Amount"]
[null,"Fiscal Year","(in thousands)"]
[null,"2015 (remaining six months)","$",4366]
[]
[null,2016,9168]
[]
[null,2017,4041]
[]
[null,2018,2210]
[]
[null,2019,847]
[]
[null,"Thereafter",2381]
[]
[null,"Total","$",23013]
[]
[null,"Employee Agreements"]
[null,"The Company has signed various employment agreements with certain executives pursuant to which if their employment is terminated without cause, the executives are entitled to receive certain benefits, including, but not limited to, accelerated stock vesting."]
[null,"Non-cancelable Purchase Commitments"]
[null,"The Company outsources the production of its hardware to third-party contract manufacturers, and enters into various inventory-related purchase commitments with these contract manufacturers and other suppliers. In addition, from time to time, the Company also enters into significant information technology and marketing agreements with its vendors, which are non-cancelable. The Company had $48.0 million and $45.4 million in non-cancelable purchase commitments as of January 31, 2015 and July 31, 2014, respectively. During the first quarter of fiscal 2015, the Company recognized a reserve for excess inventory of $1.0 million associated with a non-cancelable purchase order, which was included in product cost of revenue in the Condensed Consolidated Statement of Operations."]
[null,"Product Warranty"]
[null,"The Company’s liability for estimated future product warranty costs is included as a component of accrued liabilities in the Condensed Consolidated Balance Sheets. The following table summarizes the activity related to the Company’s accrued liability for estimated future warranty costs: "]
[]
[]
[null,null,"Product Warranty"]
[null,"First half of fiscal 2015:","(in thousands)"]
[null,"Balance at July 31, 2014","$",943]
[]
[null,"Changes to the provision",657]
[]
[null,"Obligations fulfilled during period","(241",null,")"]
[null,"Balance at January 31, 2015","$",1359]
[]
[]
[]
[null,null,"Product Warranty"]
[null,"First half of fiscal 2014:","(in thousands)"]
[null,"Balance at July 31, 2013","$",777]
[]
[null,"Changes to the provision",365]
[]
[null,"Obligations fulfilled during period","(240",null,")"]
[null,"Balance at January 31, 2014","$",902]
[]
[null,"Indemnification"]
[null,"In its sales agreements, the Company may agree to indemnify its direct and indirect sales channels and end user customers for certain expenses or liabilities resulting from claimed infringements of patents, trademarks or copyrights of third parties. The terms of these indemnification provisions are generally perpetual any time after execution of the agreement. The agreements generally limit the scope of the available remedies in a variety of industry-standard methods, including, but not limited to, product usage and geography-based limitations, a right to control the defense or settlement of any claim, and a right to replace or modify the infringing products to make them non-infringing. In certain circumstances, the Company may be subject to uncapped indemnity obligations. To date the Company has not paid material amounts to settle claims or defend lawsuits pursuant to such indemnification provisions. The Company has no liabilities recorded for these agreements as of January 31, 2015 and July 31, 2014. In addition, the Company indemnifies its officers, directors, and certain key employees while they are serving in good faith in their company capacities."]

{"sheet":"Subsequent_Events","index":17,"n_rows":12,"n_cols":2,"rows_kept":12,"cut":false,"hidden":false,"merged":[[0,0,1,0],[3,0,11,0]]}
["Subsequent Events","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Subsequent Events [Abstract]"]
["Subsequent Events","Subsequent Events"]
[null,"Merger Agreement"]
[null,"On March 2, 2015, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Hewlett-Packard Company (“Parent” or “HP”) and Aspen Acquisition Sub, Inc., a wholly-owned subsidiary of Parent (“Merger Sub”), pursuant to which, subject to the satisfaction or waiver of certain conditions therein, Merger Sub will merge with and into the Company (the “Merger”). As a result of the Merger, Merger Sub will cease to exist, and the Company will survive as a wholly-owned subsidiary of HP. "]
[null,"Pursuant to the Merger Agreement, among other things, at the effective time of the Merger, each share of the Company’s Common Stock issued and outstanding immediately prior to such time (excluding (i) any shares held in the treasury of the Company or owned, directly or indirectly, by Parent or Merger Sub at the effective time of the Merger and (ii) any shares of the Company issued and outstanding at the effective time of the Merger that are held by any holder who has not voted in favor of the Merger and who is entitled to demand and properly demands appraisal of such shares pursuant to Section 262 of the Delaware General Corporation Law) will be cancelled and extinguished and automatically converted into the right to receive $24.67 in cash, without interest, and subject to deduction for any required withholding tax. Outstanding options exercisable for the Company’s Common Stock, restricted stock units and market stock units will be treated at the effective time of the Merger as more fully set forth in the Merger Agreement. "]
[null,"The completion of the Merger is subject to customary conditions, including without limitation, approval of the Merger by the Company’s stockholders, the absence of certain legal impediments, antitrust regulatory approval pursuant to the Hart-Scott-Rodino Antitrust Improvements Act of 1976 and the antitrust laws of certain other jurisdictions, and the expiration or termination of the respective waiting periods required in connection with such required antitrust approvals."]
[null,"The Merger Agreement contains certain termination rights for both the Company and HP, and provides that, upon termination of the Merger Agreement under specified circumstances, including, but not limited to, if the Company accepts a superior acquisition proposal, the Company may be required to pay HP a termination fee of $90.0 million."]
[null,"A description of the Merger Agreement is contained in the Company’s Current Report on Form 8-K filed with the SEC on March 3, 2015, and a copy of the Merger Agreement is attached thereto as Exhibit 2.1."]
[null,"Shareholder Class Action"]
[null,"On March 9, 2015, a shareholder class action complaint was filed in the Court of Chancery of the State of Delaware, captioned Ballester v. Aruba Networks, Inc., et al., C.A. No. 10765 (Del. Ch. filed March 9, 2015), on behalf of a purported class of Aruba shareholders and naming as defendants Aruba, Aruba's Board of Directors, HP, and the Merger Sub. The plaintiffs alleges that, in connection with the proposed acquisition of Aruba by HP, the individual defendants breached their fiduciary duties to Aruba shareholders by, among other things, failing to take steps to maximize the value of Aruba to its shareholders and agreeing to certain terms in the merger agreement. The complaint further alleges that HP and the Merger Sub aided and abetted the individual defendants in the alleged breaches of their fiduciary duties. The complaint seeks, among other things, an order enjoining the defendants from consummating the proposed transaction, and attorneys' fees and costs. The Company believes that it has meritorious defenses to these claims and intends to defend the litigation vigorously."]

{"sheet":"The_Company_and_its_Significan1","index":18,"n_rows":15,"n_cols":2,"rows_kept":15,"cut":false,"hidden":false,"merged":[[0,0,1,0],[3,0,6,0],[7,0,14,0]]}
["The Company and its Significant Accounting Policies (Policies)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Organization, Consolidation and Presentation of Financial Statements [Abstract]"]
["Basis of Presentation","Basis of Presentation"]
[null,"The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with United States of America (\"U.S.\") generally accepted accounting principles (\"GAAP\") for interim financial information, pursuant to the rules and regulations of the United States Securities and Exchange Commission (\"SEC\"). Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. The accompanying Condensed Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances, transactions and cash flows have been eliminated. The July 31, 2014 Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP."]
[null,"The unaudited Condensed Consolidated Financial Statements have been prepared on the same basis as the Company's audited financial statements as of and for the year ended July 31, 2014 and include all adjustments necessary for the fair statement of the Company’s financial position as of January 31, 2015; the results of operations and statements of comprehensive income (loss) for the three and six months ended January 31, 2015 and 2014; and the statements of cash flows for the six months ended January 31, 2015 and 2014. The results of operations for the three and six months ended January 31, 2015 are not necessarily indicative of the operating results for any subsequent quarter, for the fiscal year ending July 31, 2015 or any future periods. "]
[null,"The accompanying statements are unaudited and should be read in conjunction with the audited Consolidated Financial Statements and related notes contained in the Company’s Annual Report on Form 10-K for the year ended July 31, 2014, filed with the SEC on September 24, 2014."]
["Recent Accounting Pronouncements","Recent Accounting Pronouncements"]
[null,"New Accounting Updates Recently Adopted"]
[null,"In March 2013, the Financial Accounting Standards Board (\"FASB\") issued an accounting standard update requiring an entity to release into net income (loss) the entire amount of a cumulative translation adjustment related to its investment in a foreign entity when as a parent, it either sells a part or all of its investment in the foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within the foreign entity. This standard became effective for the Company beginning in the first quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"In July 2013, the FASB issued an accounting standard update that provides explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists, with the purpose of reducing diversity in practice. This standard requires the netting of unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. This standard became effective for the Company beginning in the first quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"In November 2014, the FASB issued an accounting standard update which provides to all acquired entities the option to apply pushdown accounting when an acquirer obtains control of them. The guidance also allows any subsidiary of an acquired entity to apply pushdown accounting to its separate financial statements, regardless of whether the acquired entity elects to apply pushdown accounting. This standard became effective for the Company in the second quarter of fiscal 2015. The adoption of this standard did not have an impact on the Company's Consolidated Financial Statements."]
[null,"Recent Accounting Updates Not Yet Effective"]
[null,"In April 2014, the FASB issued an accounting standard update that changes the criteria for reporting discontinued operations. This standard raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures around both discontinued operations and certain other disposals that do not meet the definition of discontinued operation. Under the revised standard, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has, or will have, a major effect on an entity's operations and financial results when either it qualifies as held for sale, disposed of by sale, or disposed of other than by sale. This standard will be effective for the Company beginning in the first quarter of fiscal 2016. The adoption of this standard is not expected to have a material impact on the Company's Consolidated Financial Statements."]
[null,"In May 2014, the FASB issued an accounting standard update which provides for new revenue recognition guidance. The new standard is expected to supersede nearly all existing revenue recognition guidance. The core principle of the new guidance is to recognize revenue when promised goods or services are transferred to customers, in an amount that reflects the consideration to which the vendor expects to receive for those goods or services. The new standard is expected to require more judgment and estimates within the revenue recognition process than currently required under existing U.S. GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to separate performance obligations. This standard will be effective for the Company beginning in the first quarter of fiscal 2018, with no early adoption permitted. The Company will use one of two methods of adoption: (i) retrospective to each prior reporting period presented, with the option to elect certain practical expedients as defined within the standard; or (ii) retrospective with the cumulative effect of initially applying the standard recognized at the date of initial application inclusive of certain additional disclosures. The Company is currently evaluating these transition methods as well as the impact of this standard on its Consolidated Financial Statements."]

{"sheet":"Goodwill_and_Intangible_Assets1","index":19,"n_rows":96,"n_cols":16,"rows_kept":96,"cut":false,"hidden":false,"merged":[[77,0,96,0],[77,1,77,16],[18,0,60,0],[18,1,18,16],[39,1,39,16],[40,1,40,16],[61,0,76,0],[61,1,61,16],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,17,0],[3,1,3,16],[93,1,94,1],[93,2,94,3],[93,4,94,4],[95,1,96,1],[95,2,96,2],[95,3,96,3],[95,4,96,4],[89,1,90,1],[89,2,90,3],[89,4,90,4],[91,1,92,1],[91,2,92,3],[91,4,92,4],[85,1,86,1],[85,2,86,3],[85,4,86,4],[87,1,88,1],[87,2,88,3],[87,4,88,4],[80,2,80,4],[81,2,81,4],[82,2,82,4],[83,1,84,1],[83,2,84,2],[83,3,84,3],[83,4,84,4],[75,12,76,12],[75,13,76,13],[75,14,76,14],[75,15,76,15],[75,16,76,16],[78,1,78,4],[75,6,76,6],[75,7,76,7],[75,8,76,8],[75,9,76,9],[75,10,76,10],[75,11,76,11],[73,10,74,11],[73,12,74,12],[73,13,74,13],[73,14,74,15],[73,16,74,16],[75,1,76,1],[75,2,76,2],[75,3,76,3],[75,4,76,4],[75,5,76,5],[71,13,72,13],[71,14,72,15],[71,16,72,16],[73,1,74,1],[73,2,74,3],[73,4,74,4],[73,5,74,5],[73,6,74,7],[73,8,74,8],[73,9,74,9],[69,16,70,16],[71,1,72,1],[71,2,72,3],[71,4,72,4],[71,5,72,5],[71,6,72,7],[71,8,72,8],[71,9,72,9],[71,10,72,11],[71,12,72,12],[69,8,70,8],[69,9,70,9],[69,10,70,11],[69,12,70,12],[69,13,70,13],[69,14,70,15],[67,12,68,12],[67,13,68,13],[67,14,68,14],[67,15,68,15],[67,16,68,16],[69,1,70,1],[69,2,70,3],[69,4,70,4],[69,5,70,5],[69,6,70,7],[67,6,68,6],[67,7,68,7],[67,8,68,8],[67,9,68,9],[67,10,68,10],[67,11,68,11],[65,2,65,4],[65,6,65,8],[65,10,65,12],[65,14,65,16],[66,2,66,16],[67,1,68,1],[67,2,68,2],[67,3,68,3],[67,4,68,4],[67,5,68,5],[59,12,60,12],[59,13,60,13],[59,14,60,14],[62,1,62,16],[64,2,64,8],[64,10,64,16],[59,6,60,6],[59,7,60,7],[59,8,60,8],[59,9,60,9],[59,10,60,10],[59,11,60,11],[57,8,58,9],[57,10,58,10],[57,11,58,11],[57,12,58,13],[57,14,58,14],[59,1,60,1],[59,2,60,2],[59,3,60,3],[59,4,60,4],[59,5,60,5],[57,1,58,1],[57,2,58,2],[57,3,58,3],[57,4,58,5],[57,6,58,6],[57,7,58,7],[55,7,56,7],[55,8,56,9],[55,10,56,10],[55,11,56,11],[55,12,56,13],[55,14,56,14],[53,8,54,9],[53,10,54,10],[53,11,54,11],[53,12,54,13],[53,14,54,14],[55,1,56,1],[55,2,56,2],[55,3,56,3],[55,4,56,5],[55,6,56,6],[51,10,52,10],[51,11,52,11],[51,12,52,13],[51,14,52,14],[53,1,54,1],[53,2,54,2],[53,3,54,3],[53,4,54,5],[53,6,54,6],[53,7,54,7],[49,11,50,11],[49,12,50,13],[49,14,50,14],[51,1,52,1],[51,2,52,2],[51,3,52,3],[51,4,52,5],[51,6,52,6],[51,7,52,7],[51,8,52,9],[47,13,48,13],[47,14,48,14],[49,1,50,1],[49,2,50,2],[49,3,50,3],[49,4,50,5],[49,6,50,6],[49,7,50,7],[49,8,50,9],[49,10,50,10],[47,7,48,7],[47,8,48,8],[47,9,48,9],[47,10,48,10],[47,11,48,11],[47,12,48,12],[47,1,48,1],[47,2,48,2],[47,3,48,3],[47,4,48,4],[47,5,48,5],[47,6,48,6],[43,11,44,11],[43,12,43,14],[44,12,44,14],[45,2,45,14],[46,4,46,6],[46,8,46,10],[46,12,46,14],[37,13,38,13],[37,14,38,14],[41,1,41,14],[43,1,44,1],[43,3,44,3],[43,4,43,6],[44,4,44,6],[43,7,44,7],[43,8,43,10],[44,8,44,10],[37,7,38,7],[37,8,38,8],[37,9,38,9],[37,10,38,10],[37,11,38,11],[37,12,38,12],[37,1,38,1],[37,2,38,2],[37,3,38,3],[37,4,38,4],[37,5,38,5],[37,6,38,6],[35,7,36,7],[35,8,36,9],[35,10,36,10],[35,11,36,11],[35,12,36,13],[35,14,36,14],[33,8,34,9],[33,10,34,10],[33,11,34,11],[33,12,34,13],[33,14,34,14],[35,1,36,1],[35,2,36,2],[35,3,36,3],[35,4,36,5],[35,6,36,6],[33,1,34,1],[33,2,34,2],[33,3,34,3],[33,4,34,5],[33,6,34,6],[33,7,34,7],[31,7,32,7],[31,8,32,9],[31,10,32,10],[31,11,32,11],[31,12,32,13],[31,14,32,14],[29,8,30,9],[29,10,30,10],[29,11,30,11],[29,12,30,13],[29,14,30,14],[31,1,32,1],[31,2,32,2],[31,3,32,3],[31,4,32,5],[31,6,32,6],[27,10,28,10],[27,11,28,11],[27,12,28,13],[27,14,28,14],[29,1,30,1],[29,2,30,2],[29,3,30,3],[29,4,30,5],[29,6,30,6],[29,7,30,7],[25,12,26,12],[25,13,26,13],[25,14,26,14],[27,1,28,1],[27,2,28,2],[27,3,28,3],[27,4,28,5],[27,6,28,6],[27,7,28,7],[27,8,28,9],[25,6,26,6],[25,7,26,7],[25,8,26,8],[25,9,26,9],[25,10,26,10],[25,11,26,11],[22,12,22,14],[23,2,23,14],[24,4,24,6],[24,8,24,10],[24,12,24,14],[25,1,26,1],[25,2,26,2],[25,3,26,3],[25,4,26,4],[25,5,26,5],[19,1,19,14],[21,1,22,1],[21,3,22,3],[21,4,21,6],[22,4,22,6],[21,7,22,7],[21,8,21,10],[22,8,22,10],[21,11,22,11],[21,12,21,14],[14,1,15,1],[14,2,15,3],[14,4,15,4],[16,1,17,1],[16,2,17,2],[16,3,17,3],[16,4,17,4],[10,1,11,1],[10,2,11,3],[10,4,11,4],[12,1,13,1],[12,2,13,3],[12,4,13,4],[4,1,4,4],[6,2,6,4],[7,2,7,4],[8,1,9,1],[8,2,9,2],[8,3,9,3],[8,4,9,4]]}
["Goodwill and Intangible Assets (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Goodwill and Intangible Assets Disclosure [Abstract]"]
["Company's Goodwill","The following table summarizes details of the Company’s goodwill:"]
[]
[]
[null,null,"Amount"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2013","$",67242]
[]
[null,"Changes in goodwill","—"]
[]
[null,"Balance at July 31, 2014",67242]
[]
[null,"Changes in goodwill","—"]
[]
[null,"Balance at January 31, 2015","$",67242]
[]
["Schedule of Intangible Assets","The following table summarizes details of the Company’s intangible assets:"]
[]
[]
[null,null,"Estimated",null,"Gross",null,null,null,"Accumulated",null,null,null,"Net"]
[null,null,"Useful Lives",null,"Value",null,null,null,"Amortization",null,null,null,"Value"]
[null,null,"(in thousands, except estimated useful lives)"]
[null,"Balance at January 31, 2015"]
[null,"Existing technology","3 to 7 years",null,"$",41383,null,null,"$","(32,505",")",null,"$",8878]
[]
[null,"Patents","2 to 13 years",null,14636,null,null,null,"(6,537",null,")",null,8099]
[]
[null,"Customer contracts","4 to 7 years",null,7533,null,null,null,"(6,758",null,")",null,775]
[]
[null,"Support agreements","5 to 6 years",null,2917,null,null,null,"(2,856",null,")",null,61]
[]
[null,"Tradenames and trademarks","1 to 5 years",null,1150,null,null,null,"(917",null,")",null,233]
[]
[null,"Non-compete agreements"," 2 to 4 years",null,912,null,null,null,"(879",null,")",null,33]
[]
[null,"Total",null,null,"$",68531,null,null,"$","(50,452",")",null,"$",18079]
[]
[null,"In the second quarter of fiscal 2015, the Company entered into a perpetual patent license agreement for $2.8 million to support its product development and research and development activities."]
[]
[]
[]
[null,null,"Estimated ",null,"Gross ",null,null,null,"Accumulated ",null,null,null,"Net "]
[null,null,"Useful Lives",null,"Value",null,null,null,"Amortization",null,null,null,"Value"]
[null,null,"(in thousands, except estimated useful lives)"]
[null,"Balance at July 31, 2014"]
[null,"Existing technology","3 to 7 years",null,"$",41383,null,null,"$","(29,196",")",null,"$",12187]
[]
[null,"Patents","2 to 13 years",null,11796,null,null,null,"(5,881",null,")",null,5915]
[]
[null,"Customer contracts","4 to 7 years",null,7533,null,null,null,"(6,536",null,")",null,997]
[]
[null,"Support agreements","5 to 6 years",null,2917,null,null,null,"(2,839",null,")",null,78]
[]
[null,"Tradenames and trademarks","1 to 5 years",null,1150,null,null,null,"(867",null,")",null,283]
[]
[null,"Non-compete agreements"," 2 to 4 years",null,912,null,null,null,"(867",null,")",null,45]
[]
[null,"Total",null,null,"$",65691,null,null,"$","(46,186",")",null,"$",19505]
[]
["Summary of Amortization Expense of Intangible Assets","The following table summarizes the amortization expense related to intangible assets recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Cost of product revenue","$",1941,null,null,"$",2025,null,null,"$",3936,null,null,"$",4030]
[]
[null,"Sales and marketing",144,null,null,null,353,null,null,null,288,null,null,null,706]
[]
[null,"Research and development",6,null,null,null,6,null,null,null,13,null,null,null,12]
[]
[null,"General and administrative",15,null,null,null,"—",null,null,null,29,null,null,null,"—"]
[]
[null,"Total","$",2106,null,null,"$",2384,null,null,"$",4266,null,null,"$",4748]
[]
["Estimated Future Amortization Expense of Purchased Intangible Assets","The following table summarizes the estimated future amortization expense of the Company's intangible assets as of January 31, 2015:"]
[]
[]
[null,null,"Amount"]
[null,null,"(in thousands)"]
[null,"Fiscal Year"]
[null,"2015 (remaining six months)","$",4279]
[]
[null,2016,4829]
[]
[null,2017,2018]
[]
[null,2018,1764]
[]
[null,2019,1031]
[]
[null,"Thereafter",4158]
[]
[null,"Total","$",18079]

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["Net Income (Loss) Per Common Share (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Earnings Per Share [Abstract]"]
["Computation of Net Loss Per Share","The following table sets forth the computation of basic and diluted net income (loss) per share:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands, except per share data)"]
[null,"Net income (loss)","$",5683,null,null,"$","(10,701",")",null,"$",8426,null,null,"$","(18,528",")"]
[]
[null,"Weighted-average shares outstanding - basic",107891,null,null,null,107153,null,null,null,108132,null,null,null,109608]
[]
[null,"Dilutive effect of potential shares",5502,null,null,null,"—",null,null,null,6579,null,null,null,"—"]
[]
[null,"Weighted-average shares outstanding - diluted",113393,null,null,null,107153,null,null,null,114711,null,null,null,109608]
[]
[null,"Net income (loss) per share - basic","$",0.05,null,null,"$","(0.10",")",null,"$",0.08,null,null,"$","(0.17",")"]
[]
[null,"Net income (loss) per share - diluted","$",0.05,null,null,"$","(0.10",")",null,"$",7.0000000000000007E-2,null,null,"$","(0.17",")"]
[]
["Summary of Outstanding Stock Options and Awards","The following table summarizes the potentially dilutive common shares that were excluded from the computation of the diluted net income (loss) per share for the periods presented, because including them would have had an anti-dilutive effect: "]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":5},"Six Months Ended January 31,"]
[null,null,2015,null,null,2014,null,null,2015,null,null,2014]
[null,null,"(in thousands)"]
[null,"Options to purchase common stock",1013,null,null,1102,null,null,1023,null,null,1201]
[]
[null,"Restricted stock awards",1833,null,null,1345,null,null,1357,null,null,1295]
[]
[null,"Market stock units",580,null,null,"—",null,null,429,null,null,"—"]

{"sheet":"ShortTerm_Investments_Tables","index":21,"n_rows":94,"n_cols":16,"rows_kept":94,"cut":false,"hidden":false,"merged":[[41,1,41,16],[54,1,54,16],[67,0,94,0],[67,1,67,16],[81,1,81,16],[93,7,94,7],[93,8,94,8],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,40,0],[3,1,3,16],[21,1,21,16],[41,0,66,0],[93,1,94,1],[93,2,94,2],[93,3,94,3],[93,4,94,4],[93,5,94,5],[93,6,94,6],[89,8,90,8],[91,1,92,1],[91,2,92,3],[91,4,92,4],[91,5,92,5],[91,6,92,7],[91,8,92,8],[87,2,87,8],[88,2,88,4],[88,6,88,8],[89,1,90,1],[89,2,90,2],[89,3,90,3],[89,4,90,4],[89,5,90,5],[89,6,90,6],[89,7,90,7],[79,7,80,7],[79,8,80,8],[82,1,82,8],[84,2,84,8],[85,1,86,1],[85,2,85,4],[86,2,86,4],[85,5,86,5],[85,6,85,8],[86,6,86,8],[79,1,80,1],[79,2,80,2],[79,3,80,3],[79,4,80,4],[79,5,80,5],[79,6,80,6],[75,8,76,8],[77,1,78,1],[77,2,78,3],[77,4,78,4],[77,5,78,5],[77,6,78,7],[77,8,78,8],[73,2,73,8],[74,2,74,4],[74,6,74,8],[75,1,76,1],[75,2,76,2],[75,3,76,3],[75,4,76,4],[75,5,76,5],[75,6,76,6],[75,7,76,7],[65,7,66,7],[65,8,66,8],[68,1,68,8],[70,2,70,8],[71,1,72,1],[71,2,71,4],[72,2,72,4],[71,5,72,5],[71,6,71,8],[72,6,72,8],[65,1,66,1],[65,2,66,2],[65,3,66,3],[65,4,66,4],[65,5,66,5],[65,6,66,6],[61,8,62,8],[63,1,64,1],[63,2,64,3],[63,4,64,4],[63,5,64,5],[63,6,64,7],[63,8,64,8],[59,2,59,8],[60,2,60,4],[60,6,60,8],[61,1,62,1],[61,2,62,2],[61,3,62,3],[61,4,62,4],[61,5,62,5],[61,6,62,6],[61,7,62,7],[52,7,53,7],[52,8,53,8],[55,1,55,8],[57,1,58,1],[57,2,57,4],[58,2,58,4],[57,5,58,5],[57,6,57,8],[58,6,58,8],[52,1,53,1],[52,2,53,2],[52,3,53,3],[52,4,53,4],[52,5,53,5],[52,6,53,6],[48,7,49,7],[48,8,49,8],[50,1,51,1],[50,2,51,3],[50,4,51,4],[50,5,51,5],[50,6,51,7],[50,8,51,8],[45,6,45,8],[46,2,46,8],[47,2,47,4],[47,6,47,8],[48,1,49,1],[48,2,49,2],[48,3,49,3],[48,4,49,4],[48,5,49,5],[48,6,49,6],[39,13,40,13],[39,14,40,14],[39,15,40,15],[39,16,40,16],[42,1,42,8],[44,1,45,1],[44,2,44,4],[45,2,45,4],[44,5,45,5],[44,6,44,8],[39,7,40,7],[39,8,40,8],[39,9,40,9],[39,10,40,10],[39,11,40,11],[39,12,40,12],[39,1,40,1],[39,2,40,2],[39,3,40,3],[39,4,40,4],[39,5,40,5],[39,6,40,6],[37,9,38,9],[37,10,38,11],[37,12,38,12],[37,13,38,13],[37,14,38,15],[37,16,38,16],[37,1,38,1],[37,2,38,3],[37,4,38,4],[37,5,38,5],[37,6,38,7],[37,8,38,8],[35,9,36,9],[35,10,36,11],[35,12,36,12],[35,13,36,13],[35,14,36,15],[35,16,36,16],[35,1,36,1],[35,2,36,3],[35,4,36,4],[35,5,36,5],[35,6,36,7],[35,8,36,8],[33,9,34,9],[33,10,34,11],[33,12,34,12],[33,13,34,13],[33,14,34,15],[33,16,34,16],[33,1,34,1],[33,2,34,3],[33,4,34,4],[33,5,34,5],[33,6,34,7],[33,8,34,8],[31,9,32,9],[31,10,32,11],[31,12,32,12],[31,13,32,13],[31,14,32,15],[31,16,32,16],[29,13,30,13],[29,14,30,14],[29,15,30,15],[29,16,30,16],[31,1,32,1],[31,2,32,3],[31,4,32,4],[31,5,32,5],[31,6,32,7],[31,8,32,8],[29,7,30,7],[29,8,30,8],[29,9,30,9],[29,10,30,10],[29,11,30,11],[29,12,30,12],[29,1,30,1],[29,2,30,2],[29,3,30,3],[29,4,30,4],[29,5,30,5],[29,6,30,6],[24,14,26,16],[27,2,27,16],[28,2,28,4],[28,6,28,8],[28,10,28,12],[28,14,28,16],[26,6,26,8],[24,9,26,9],[24,10,24,12],[25,10,25,12],[26,10,26,12],[24,13,26,13],[19,13,20,13],[19,14,20,14],[19,15,20,15],[19,16,20,16],[22,1,22,16],[24,1,26,1],[24,2,26,4],[24,5,26,5],[24,6,24,8],[25,6,25,8],[19,7,20,7],[19,8,20,8],[19,9,20,9],[19,10,20,10],[19,11,20,11],[19,12,20,12],[19,1,20,1],[19,2,20,2],[19,3,20,3],[19,4,20,4],[19,5,20,5],[19,6,20,6],[17,9,18,9],[17,10,18,11],[17,12,18,12],[17,13,18,13],[17,14,18,15],[17,16,18,16],[17,1,18,1],[17,2,18,3],[17,4,18,4],[17,5,18,5],[17,6,18,7],[17,8,18,8],[15,9,16,9],[15,10,16,11],[15,12,16,12],[15,13,16,13],[15,14,16,15],[15,16,16,16],[15,1,16,1],[15,2,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,7],[15,8,16,8],[13,9,14,9],[13,10,14,11],[13,12,14,12],[13,13,14,13],[13,14,14,15],[13,16,14,16],[11,13,12,13],[11,14,12,14],[11,15,12,15],[11,16,12,16],[13,1,14,1],[13,2,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,7],[13,8,14,8],[11,7,12,7],[11,8,12,8],[11,9,12,9],[11,10,12,10],[11,11,12,11],[11,12,12,12],[11,1,12,1],[11,2,12,2],[11,3,12,3],[11,4,12,4],[11,5,12,5],[11,6,12,6],[8,10,8,12],[6,13,8,13],[6,14,8,16],[9,2,9,16],[10,2,10,4],[10,6,10,8],[10,10,10,12],[10,14,10,16],[4,1,4,16],[6,1,8,1],[6,2,8,4],[6,5,8,5],[6,6,6,8],[7,6,7,8],[8,6,8,8],[6,9,8,9],[6,10,6,12],[7,10,7,12]]}
["Short-Term Investments (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Investments, Debt and Equity Securities [Abstract]"]
["Summary of Short-Term Investments","The following table summarizes the Company's short-term investments:"]
[]
[]
[null,null,"Cost Basis",null,null,null,"Gross",null,null,null,"Gross",null,null,null,"Fair Value"]
[{"$nulls":6},"Unrealized",null,null,null,"Unrealized"]
[{"$nulls":6},"Gains",null,null,null,"Losses"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Corporate bonds","$",44254,null,null,"$",27,null,null,"$","(8",")",null,"$",44273]
[]
[null,"U.S. government agency securities",79514,null,null,null,42,null,null,null,"(14",null,")",null,79542]
[]
[null,"U.S. treasury bills",9834,null,null,null,3,null,null,null,"—",null,null,null,9837]
[]
[null,"Commercial paper",5395,null,null,null,2,null,null,null,"—",null,null,null,5397]
[]
[null,"Total","$",138997,null,null,"$",74,null,null,"$","(22",")",null,"$",139049]
[]
[]
[]
[]
[null,null,"Cost Basis",null,null,null,"Gross",null,null,null,"Gross",null,null,null,"Fair Value"]
[{"$nulls":6},"Unrealized",null,null,null,"Unrealized"]
[{"$nulls":6},"Gains",null,null,null,"Losses"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Corporate bonds","$",54969,null,null,"$",79,null,null,"$","(15",")",null,"$",55033]
[]
[null,"U.S. government agency securities",90681,null,null,null,17,null,null,null,"(58",null,")",null,90640]
[]
[null,"U.S. treasury bills",14560,null,null,null,17,null,null,null,"—",null,null,null,14577]
[]
[null,"Commercial paper",4587,null,null,null,4,null,null,null,"—",null,null,null,4591]
[]
[null,"Municipal notes and bonds",1518,null,null,null,"—",null,null,null,"—",null,null,null,1518]
[]
[null,"Total","$",166315,null,null,"$",117,null,null,"$","(73",")",null,"$",166359]
[]
["Cost Basis and Fair Value of Debt Securities by Contractual Maturity","The following table summarizes the cost basis and fair value of the short-term investments by contractual maturity:"]
[]
[]
[null,null,"Cost",null,null,null,"Fair"]
[null,null,"Basis",null,null,null,"Value"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"One year or less","$",75684,null,null,"$",75709]
[]
[null,"Over one year and less than two years",63313,null,null,null,63340]
[]
[null,"Total","$",138997,null,null,"$",139049]
[]
[]
[]
[]
[null,null,"Cost",null,null,null,"Fair"]
[null,null,"Basis",null,null,null,"Value"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"One year or less","$",110184,null,null,"$",110280]
[]
[null,"Over one year and less than two years",56131,null,null,null,56079]
[]
[null,"Total","$",166315,null,null,"$",166359]
[]
["Fair Value and Gross Unrealized Losses of Company's Investments","The following table summarizes the fair value and gross unrealized losses of the Company’s investments with unrealized losses aggregated by type of investment instrument and the length of time that individual securities have been in a continuous unrealized loss position:"]
[]
[]
[null,null,"Less than 12 Months"]
[null,null,"Fair",null,null,null,"Unrealized"]
[null,null,"Value",null,null,null,"Loss"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Corporate bonds","$",15396,null,null,"$","(8",")"]
[]
[null,"U.S. government agency securities",30613,null,null,null,"(14",null,")"]
[]
[null,"Total","$",46009,null,null,"$","(22",")"]
[]
[]
[]
[]
[null,null,"Less than 12 Months"]
[null,null,"Fair",null,null,null,"Unrealized"]
[null,null,"Value",null,null,null,"Loss"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Corporate bonds","$",14101,null,null,"$","(15",")"]
[]
[null,"U.S. government agency securities",57566,null,null,null,"(58",null,")"]
[]
[null,"Total","$",71667,null,null,"$","(73",")"]

{"sheet":"Fair_Value_of_Financial_Instru1","index":22,"n_rows":54,"n_cols":16,"rows_kept":54,"cut":false,"hidden":false,"merged":[[53,13,54,13],[53,14,54,14],[53,15,54,15],[53,16,54,16],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,54,0],[3,1,3,16],[53,7,54,7],[53,8,54,8],[53,9,54,9],[53,10,54,10],[53,11,54,11],[53,12,54,12],[53,1,54,1],[53,2,54,2],[53,3,54,3],[53,4,54,4],[53,5,54,5],[53,6,54,6],[51,9,52,9],[51,10,52,11],[51,12,52,12],[51,13,52,13],[51,14,52,15],[51,16,52,16],[51,1,52,1],[51,2,52,3],[51,4,52,4],[51,5,52,5],[51,6,52,7],[51,8,52,8],[49,9,50,9],[49,10,50,11],[49,12,50,12],[49,13,50,13],[49,14,50,15],[49,16,50,16],[49,1,50,1],[49,2,50,3],[49,4,50,4],[49,5,50,5],[49,6,50,7],[49,8,50,8],[47,9,48,9],[47,10,48,11],[47,12,48,12],[47,13,48,13],[47,14,48,15],[47,16,48,16],[47,1,48,1],[47,2,48,3],[47,4,48,4],[47,5,48,5],[47,6,48,7],[47,8,48,8],[45,9,46,9],[45,10,46,11],[45,12,46,12],[45,13,46,13],[45,14,46,15],[45,16,46,16],[45,1,46,1],[45,2,46,3],[45,4,46,4],[45,5,46,5],[45,6,46,7],[45,8,46,8],[43,9,44,9],[43,10,44,11],[43,12,44,12],[43,13,44,13],[43,14,44,15],[43,16,44,16],[42,2,42,4],[42,6,42,8],[42,10,42,12],[42,14,42,16],[43,1,44,1],[43,2,44,3],[43,4,44,4],[43,5,44,5],[43,6,44,7],[43,8,44,8],[40,9,41,9],[40,10,41,11],[40,12,41,12],[40,13,41,13],[40,14,41,15],[40,16,41,16],[40,1,41,1],[40,2,41,3],[40,4,41,4],[40,5,41,5],[40,6,41,7],[40,8,41,8],[38,9,39,9],[38,10,39,11],[38,12,39,12],[38,13,39,13],[38,14,39,15],[38,16,39,16],[36,13,37,13],[36,14,37,14],[36,15,37,15],[36,16,37,16],[38,1,39,1],[38,2,39,3],[38,4,39,4],[38,5,39,5],[38,6,39,7],[38,8,39,8],[36,7,37,7],[36,8,37,8],[36,9,37,9],[36,10,37,10],[36,11,37,11],[36,12,37,12],[35,2,35,4],[35,6,35,8],[35,10,35,12],[35,14,35,16],[36,1,37,1],[36,2,37,2],[36,3,37,3],[36,4,37,4],[36,5,37,5],[36,6,37,6],[32,2,32,16],[33,2,33,4],[33,6,33,8],[33,10,33,12],[33,14,33,16],[34,2,34,4],[34,6,34,8],[34,10,34,12],[34,14,34,16],[26,13,27,13],[26,14,27,14],[26,15,27,15],[26,16,27,16],[29,1,29,16],[31,2,31,4],[31,6,31,8],[31,10,31,12],[31,14,31,16],[28,1,28,16],[26,7,27,7],[26,8,27,8],[26,9,27,9],[26,10,27,10],[26,11,27,11],[26,12,27,12],[26,1,27,1],[26,2,27,2],[26,3,27,3],[26,4,27,4],[26,5,27,5],[26,6,27,6],[24,9,25,9],[24,10,25,11],[24,12,25,12],[24,13,25,13],[24,14,25,15],[24,16,25,16],[24,1,25,1],[24,2,25,3],[24,4,25,4],[24,5,25,5],[24,6,25,7],[24,8,25,8],[22,9,23,9],[22,10,23,11],[22,12,23,12],[22,13,23,13],[22,14,23,15],[22,16,23,16],[22,1,23,1],[22,2,23,3],[22,4,23,4],[22,5,23,5],[22,6,23,7],[22,8,23,8],[20,9,21,9],[20,10,21,11],[20,12,21,12],[20,13,21,13],[20,14,21,15],[20,16,21,16],[20,1,21,1],[20,2,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,7],[20,8,21,8],[18,9,19,9],[18,10,19,11],[18,12,19,12],[18,13,19,13],[18,14,19,15],[18,16,19,16],[17,2,17,4],[17,6,17,8],[17,10,17,12],[17,14,17,16],[18,1,19,1],[18,2,19,3],[18,4,19,4],[18,5,19,5],[18,6,19,7],[18,8,19,8],[15,9,16,9],[15,10,16,11],[15,12,16,12],[15,13,16,13],[15,14,16,15],[15,16,16,16],[15,1,16,1],[15,2,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,7],[15,8,16,8],[13,9,14,9],[13,10,14,11],[13,12,14,12],[13,13,14,13],[13,14,14,15],[13,16,14,16],[11,13,12,13],[11,14,12,14],[11,15,12,15],[11,16,12,16],[13,1,14,1],[13,2,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,7],[13,8,14,8],[11,7,12,7],[11,8,12,8],[11,9,12,9],[11,10,12,10],[11,11,12,11],[11,12,12,12],[10,2,10,4],[10,6,10,8],[10,10,10,12],[10,14,10,16],[11,1,12,1],[11,2,12,2],[11,3,12,3],[11,4,12,4],[11,5,12,5],[11,6,12,6],[8,2,8,4],[8,6,8,8],[8,10,8,12],[8,14,8,16],[9,2,9,4],[9,6,9,8],[9,10,9,12],[9,14,9,16],[4,1,4,16],[6,2,6,4],[6,6,6,8],[6,10,6,12],[6,14,6,16],[7,2,7,16]]}
["Fair Value of Financial Instruments (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Fair Value Disclosures [Abstract]"]
["Fair Value Measurements on Recurring Basis","The following table summarizes the fair value measurements of the Company’s cash, cash equivalents and short-term investments:"]
[]
[]
[null,null,"Level 1",null,null,null,"Level 2",null,null,null,"Level 3",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at January 31, 2015"]
[null,"Assets"]
[null,"Cash and cash equivalents:"]
[null,"Cash deposits with third-party financial institutions","$",122634,null,null,"$","—",null,null,"$","—",null,null,"$",122634]
[]
[null,"Money market funds",27815,null,null,null,"—",null,null,null,"—",null,null,null,27815]
[]
[null,"Commercial paper","—",null,null,null,1500,null,null,null,"—",null,null,null,1500]
[]
[null,"Short-term investments:"]
[null,"Corporate bonds","—",null,null,null,44273,null,null,null,"—",null,null,null,44273]
[]
[null,"U.S. government agency securities","—",null,null,null,79542,null,null,null,"—",null,null,null,79542]
[]
[null,"U.S. treasury bills","—",null,null,null,9837,null,null,null,"—",null,null,null,9837]
[]
[null,"Commercial paper","—",null,null,null,5397,null,null,null,"—",null,null,null,5397]
[]
[null,"Total","$",150449,null,null,"$",140549,null,null,"$","—",null,null,"$",290998]
[]
[]
[]
[]
[null,null,"Level 1",null,null,null,"Level 2",null,null,null,"Level 3",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014"]
[null,"Assets"]
[null,"Cash and cash equivalents:"]
[null,"Cash deposits with third-party financial institutions","$",113303,null,null,"$","—",null,null,"$","—",null,null,"$",113303]
[]
[null,"Money market funds",2291,null,null,null,"—",null,null,null,"—",null,null,null,2291]
[]
[null,"Commercial paper","—",null,null,null,3000,null,null,null,"—",null,null,null,3000]
[]
[null,"Short-term investments:"]
[null,"Corporate bonds","—",null,null,null,55033,null,null,null,"—",null,null,null,55033]
[]
[null,"U.S. government agency securities","—",null,null,null,90640,null,null,null,"—",null,null,null,90640]
[]
[null,"U.S. treasury bills","—",null,null,null,14577,null,null,null,"—",null,null,null,14577]
[]
[null,"Commercial paper","—",null,null,null,4591,null,null,null,"—",null,null,null,4591]
[]
[null,"Municipal notes and bonds","—",null,null,null,1518,null,null,null,"—",null,null,null,1518]
[]
[null,"Total","$",115594,null,null,"$",169359,null,null,"$","—",null,null,"$",284953]

{"sheet":"Recovered_Sheet2","index":23,"n_rows":70,"n_cols":11,"rows_kept":70,"cut":false,"hidden":false,"merged":[[51,0,70,0],[69,7,70,7],[69,8,70,8],[0,0,1,0],[0,1,0,10],[1,1,1,10],[2,1,2,10],[3,0,15,0],[3,1,3,10],[16,0,36,0],[37,0,50,0],[69,1,70,1],[69,2,70,2],[69,3,70,3],[69,4,70,4],[69,5,70,5],[69,6,70,6],[67,1,68,1],[67,2,68,3],[67,4,68,4],[67,5,68,5],[67,6,68,7],[67,8,68,8],[65,1,66,1],[65,2,66,3],[65,4,66,4],[65,5,66,5],[65,6,66,7],[65,8,66,8],[63,1,64,1],[63,2,64,3],[63,4,64,4],[63,5,64,5],[63,6,64,7],[63,8,64,8],[61,1,62,1],[61,2,62,3],[61,4,62,4],[61,5,62,5],[61,6,62,7],[61,8,62,8],[59,1,60,1],[59,2,60,3],[59,4,60,4],[59,5,60,5],[59,6,60,7],[59,8,60,8],[55,2,55,8],[56,2,56,8],[57,1,58,1],[57,2,58,2],[57,3,58,3],[57,4,58,4],[57,5,58,5],[57,6,58,6],[57,7,58,7],[57,8,58,8],[49,7,50,7],[49,8,50,8],[51,1,51,8],[53,1,54,1],[53,2,53,4],[54,2,54,4],[53,5,54,5],[53,6,53,8],[54,6,54,8],[49,1,50,1],[49,2,50,2],[49,3,50,3],[49,4,50,4],[49,5,50,5],[49,6,50,6],[47,1,48,1],[47,2,48,3],[47,4,48,4],[47,5,48,5],[47,6,48,7],[47,8,48,8],[43,8,44,8],[45,1,46,1],[45,2,46,3],[45,4,46,4],[45,5,46,5],[45,6,46,7],[45,8,46,8],[41,2,41,8],[42,2,42,4],[42,6,42,8],[43,1,44,1],[43,2,44,2],[43,3,44,3],[43,4,44,4],[43,5,44,5],[43,6,44,6],[43,7,44,7],[35,9,36,9],[35,10,36,10],[37,1,37,8],[39,1,40,1],[39,2,39,4],[40,2,40,4],[39,5,40,5],[39,6,39,8],[40,6,40,8],[34,4,34,5],[34,8,34,9],[35,1,36,1],[35,2,36,2],[35,3,36,3],[35,4,36,4],[35,5,36,5],[35,6,36,6],[35,7,36,7],[35,8,36,8],[30,8,31,9],[30,10,31,10],[32,1,33,1],[32,2,33,2],[32,3,33,3],[32,4,33,5],[32,6,33,6],[32,7,33,7],[32,8,33,9],[32,10,33,10],[30,1,31,1],[30,2,31,2],[30,3,31,3],[30,4,31,5],[30,6,31,6],[30,7,31,7],[26,8,27,9],[26,10,27,10],[28,1,29,1],[28,2,29,2],[28,3,29,3],[28,4,29,5],[28,6,29,6],[28,7,29,7],[28,8,29,9],[28,10,29,10],[26,1,27,1],[26,2,27,2],[26,3,27,3],[26,4,27,5],[26,6,27,6],[26,7,27,7],[22,9,23,9],[22,10,23,10],[24,1,25,1],[24,2,25,2],[24,3,25,3],[24,4,25,5],[24,6,25,6],[24,7,25,7],[24,8,25,9],[24,10,25,10],[20,2,20,10],[21,2,21,10],[22,1,23,1],[22,2,23,2],[22,3,23,3],[22,4,23,4],[22,5,23,5],[22,6,23,6],[22,7,23,7],[22,8,23,8],[14,7,15,7],[14,8,15,8],[16,1,16,10],[18,1,19,1],[18,3,19,3],[18,4,18,6],[19,4,19,6],[18,7,19,7],[18,8,18,10],[19,8,19,10],[14,1,15,1],[14,2,15,2],[14,3,15,3],[14,4,15,4],[14,5,15,5],[14,6,15,6],[10,8,11,8],[12,1,13,1],[12,2,13,3],[12,4,13,4],[12,5,13,5],[12,6,13,7],[12,8,13,8],[8,2,8,8],[9,2,9,4],[9,6,9,8],[10,1,11,1],[10,2,11,2],[10,3,11,3],[10,4,11,4],[10,5,11,5],[10,6,11,6],[10,7,11,7],[4,1,4,8],[6,1,7,1],[6,2,6,4],[7,2,7,4],[6,5,7,5],[6,6,6,8],[7,6,7,8]]}
["Condensed Consolidated Balance Sheet Components (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Balance Sheet Components [Abstract]"]
["Inventory","The following tables summarize selected components of the Company's Condensed Consolidated Balance Sheets:"]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Inventory"]
[null,"Raw materials","$",472,null,null,"$",348]
[]
[null,"Finished goods",44801,null,null,null,39488]
[]
[null,"Total","$",45273,null,null,"$",39836]
[]
["Property and Equipment, net"]
[]
[null,null,"Estimated",null,"January 31,",null,null,null,"July 31,"]
[null,null,"Useful Lives",null,2015,null,null,null,2014]
[null,null,"(in thousands, except estimated useful lives)"]
[null," Property and Equipment, net"]
[null,"Computer equipment","2 to 5 years",null,"$",26993,null,null,"$",25779]
[]
[null,"Computer software","2 to 5 years",null,19341,null,null,null,16675]
[]
[null,"Machinery and equipment","2 to 5 years",null,42951,null,null,null,36500]
[]
[null,"Furniture and fixtures","2 to 5 years",null,5299,null,null,null,4756]
[]
[null,"Leasehold improvements","1 to 6 years",null,10345,null,null,null,8128]
[]
[null,"Total, gross",null,null,104929,null,null,null,91838]
[]
[null,"Less: accumulated depreciation and amortization",null,null,"(74,569",null,")",null,"(64,577",null,")"]
[null,"Total, net",null,null,"$",30360,null,null,"$",27261]
[]
["Accrued Liabilities"]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Accrued Liabilities"]
[null,"Compensation and benefits","$",42946,null,null,"$",37737]
[]
[null,"Marketing",27420,null,null,null,24782]
[]
[null,"Other",24855,null,null,null,18059]
[]
[null,"Total","$",95221,null,null,"$",80578]
[]
["Deferred Revenue"]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null," Deferred Revenue"]
[null,"Product","$",59525,null,null,"$",50678]
[]
[null,"Support and professional services",93985,null,null,null,84482]
[]
[null,"Total, current",153510,null,null,null,135160]
[]
[null,"Product, non-current",2629,null,null,null,3497]
[]
[null,"Support and professional services, non-current",44596,null,null,null,41480]
[]
[null,"Total, non-current",47225,null,null,null,44977]
[]
[null,"Total","$",200735,null,null,"$",180137]

{"sheet":"Equity_Incentive_Plans_and_Ben1","index":24,"n_rows":168,"n_cols":16,"rows_kept":168,"cut":false,"hidden":false,"merged":[[123,0,134,0],[123,1,123,16],[134,1,134,16],[135,0,168,0],[135,1,135,16],[153,1,153,16],[86,0,94,0],[86,1,86,16],[95,0,110,0],[95,1,95,16],[111,0,122,0],[111,1,111,16],[122,1,122,16],[3,1,3,16],[42,0,67,0],[42,1,42,16],[68,0,76,0],[68,1,68,16],[77,0,85,0],[77,1,77,16],[167,12,168,12],[167,13,168,13],[167,14,168,14],[167,15,168,15],[167,16,168,16],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,41,0],[167,6,168,6],[167,7,168,7],[167,8,168,8],[167,9,168,9],[167,10,168,10],[167,11,168,11],[165,10,166,11],[165,12,166,12],[165,13,166,13],[165,14,166,15],[165,16,166,16],[167,1,168,1],[167,2,168,2],[167,3,168,3],[167,4,168,4],[167,5,168,5],[163,13,164,13],[163,14,164,15],[163,16,164,16],[165,1,166,1],[165,2,166,3],[165,4,166,4],[165,5,166,5],[165,6,166,7],[165,8,166,8],[165,9,166,9],[161,16,162,16],[163,1,164,1],[163,2,164,3],[163,4,164,4],[163,5,164,5],[163,6,164,7],[163,8,164,8],[163,9,164,9],[163,10,164,11],[163,12,164,12],[161,8,162,8],[161,9,162,9],[161,10,162,11],[161,12,162,12],[161,13,162,13],[161,14,162,15],[159,12,160,12],[159,13,160,13],[159,14,160,14],[159,15,160,15],[159,16,160,16],[161,1,162,1],[161,2,162,3],[161,4,162,4],[161,5,162,5],[161,6,162,7],[159,6,160,6],[159,7,160,7],[159,8,160,8],[159,9,160,9],[159,10,160,10],[159,11,160,11],[157,2,157,4],[157,6,157,8],[157,10,157,12],[157,14,157,16],[158,2,158,16],[159,1,160,1],[159,2,160,2],[159,3,160,3],[159,4,160,4],[159,5,160,5],[151,14,152,14],[151,15,152,15],[151,16,152,16],[154,1,154,16],[156,2,156,8],[156,10,156,16],[151,8,152,8],[151,9,152,9],[151,10,152,10],[151,11,152,11],[151,12,152,12],[151,13,152,13],[149,13,150,13],[149,14,150,15],[149,16,150,16],[151,1,152,1],[151,2,152,2],[151,3,152,3],[151,4,152,4],[151,5,152,5],[151,6,152,6],[151,7,152,7],[147,16,148,16],[149,1,150,1],[149,2,150,3],[149,4,150,4],[149,5,150,5],[149,6,150,7],[149,8,150,8],[149,9,150,9],[149,10,150,11],[149,12,150,12],[147,8,148,8],[147,9,148,9],[147,10,148,11],[147,12,148,12],[147,13,148,13],[147,14,148,15],[145,10,146,11],[145,12,146,12],[145,13,146,13],[145,14,146,15],[145,16,146,16],[147,1,148,1],[147,2,148,3],[147,4,148,4],[147,5,148,5],[147,6,148,7],[143,13,144,13],[143,14,144,15],[143,16,144,16],[145,1,146,1],[145,2,146,3],[145,4,146,4],[145,5,146,5],[145,6,146,7],[145,8,146,8],[145,9,146,9],[141,16,142,16],[143,1,144,1],[143,2,144,3],[143,4,144,4],[143,5,144,5],[143,6,144,7],[143,8,144,8],[143,9,144,9],[143,10,144,11],[143,12,144,12],[141,10,142,10],[141,11,142,11],[141,12,142,12],[141,13,142,13],[141,14,142,14],[141,15,142,15],[140,2,140,16],[141,1,142,1],[141,2,142,2],[141,3,142,3],[141,4,142,4],[141,5,142,5],[141,6,142,6],[141,7,142,7],[141,8,142,8],[141,9,142,9],[136,1,136,16],[138,2,138,8],[138,10,138,16],[139,2,139,4],[139,6,139,8],[139,10,139,12],[139,14,139,16],[130,9,131,9],[132,1,133,1],[132,2,133,2],[132,3,133,3],[132,4,133,4],[132,5,133,5],[132,6,133,6],[132,7,133,7],[132,8,133,8],[132,9,133,9],[129,2,129,3],[129,7,129,9],[130,1,131,1],[130,2,131,2],[130,3,131,3],[130,4,131,4],[130,5,131,5],[130,6,131,6],[130,7,131,7],[130,8,131,8],[124,1,124,9],[126,1,128,1],[126,2,126,3],[127,2,127,3],[128,2,128,3],[126,4,128,4],[126,6,128,6],[126,7,126,9],[127,7,127,9],[128,7,128,9],[118,9,119,9],[120,1,121,1],[120,2,121,2],[120,3,121,3],[120,4,121,4],[120,5,121,5],[120,6,121,6],[120,7,121,7],[120,8,121,8],[120,9,121,9],[117,2,117,3],[117,7,117,9],[118,1,119,1],[118,2,119,2],[118,3,119,3],[118,4,119,4],[118,5,119,5],[118,6,119,6],[118,7,119,7],[118,8,119,8],[112,1,112,9],[114,1,116,1],[114,2,114,3],[115,2,115,3],[116,2,116,3],[114,4,116,4],[114,6,116,6],[114,7,114,9],[115,7,115,9],[116,7,116,9],[109,1,110,1],[109,2,110,2],[109,3,110,3],[109,4,110,4],[109,5,110,5],[109,6,110,6],[107,1,108,1],[107,2,108,2],[107,3,108,3],[107,4,108,4],[107,5,108,5],[107,6,108,6],[105,1,106,1],[105,2,106,2],[105,3,106,3],[105,4,106,4],[105,5,106,5],[105,6,106,6],[103,1,104,1],[103,2,104,2],[103,3,104,3],[103,4,104,4],[103,5,104,5],[103,6,104,6],[99,5,99,6],[100,5,100,6],[101,1,102,1],[101,2,102,2],[101,3,102,3],[101,4,102,4],[101,5,102,5],[101,6,102,6],[84,7,85,7],[84,8,85,8],[87,1,87,2],[96,1,96,6],[98,1,100,1],[98,2,98,3],[99,2,99,3],[100,2,100,3],[98,4,100,4],[98,5,98,6],[84,1,85,1],[84,2,85,2],[84,3,85,3],[84,4,85,4],[84,5,85,5],[84,6,85,6],[82,1,83,1],[82,2,83,3],[82,4,83,4],[82,5,83,5],[82,6,83,7],[82,8,83,8],[66,7,67,7],[69,1,69,4],[71,2,71,4],[78,1,78,8],[80,1,81,1],[80,2,80,4],[81,2,81,4],[80,5,81,5],[80,6,80,8],[81,6,81,8],[66,1,67,1],[66,2,67,2],[66,3,67,3],[66,4,67,4],[66,5,67,5],[66,6,67,6],[64,1,65,1],[64,2,65,2],[64,3,65,3],[64,4,65,4],[64,5,65,6],[64,7,65,7],[62,1,63,1],[62,2,63,2],[62,3,63,3],[62,4,63,4],[62,5,63,6],[62,7,63,7],[60,1,61,1],[60,2,61,2],[60,3,61,3],[60,4,61,4],[60,5,61,6],[60,7,61,7],[58,1,59,1],[58,2,59,2],[58,3,59,3],[58,4,59,4],[58,5,59,6],[58,7,59,7],[56,1,57,1],[56,2,57,2],[56,3,57,3],[56,4,57,4],[56,5,57,6],[56,7,57,7],[54,1,55,1],[54,2,55,2],[54,3,55,3],[54,4,55,4],[54,5,55,6],[54,7,55,7],[50,7,51,7],[52,1,53,1],[52,2,53,2],[52,3,53,3],[52,4,53,4],[52,5,53,6],[52,7,53,7],[50,1,51,1],[50,2,51,2],[50,3,51,3],[50,4,51,4],[50,5,51,5],[50,6,51,6],[45,1,49,1],[45,2,49,3],[45,4,49,4],[45,5,45,7],[46,5,46,7],[47,5,47,7],[48,5,48,7],[49,5,49,7],[40,12,41,12],[40,13,41,13],[40,14,41,14],[40,15,41,15],[40,16,41,16],[43,1,43,7],[40,6,41,6],[40,7,41,7],[40,8,41,8],[40,9,41,9],[40,10,41,10],[40,11,41,11],[38,10,39,10],[38,11,39,11],[38,12,39,12],[38,13,39,13],[38,14,39,16],[40,1,41,1],[40,2,41,2],[40,3,41,3],[40,4,41,4],[40,5,41,5],[36,14,37,15],[36,16,37,16],[38,1,39,1],[38,2,39,2],[38,3,39,3],[38,4,39,4],[38,5,39,5],[38,6,39,6],[38,7,39,7],[38,8,39,9],[36,7,37,7],[36,8,37,9],[36,10,37,10],[36,11,37,11],[36,12,37,12],[36,13,37,13],[36,1,37,1],[36,2,37,2],[36,3,37,3],[36,4,37,4],[36,5,37,5],[36,6,37,6],[34,7,35,7],[34,8,35,10],[34,11,35,11],[34,12,35,12],[34,13,35,13],[34,14,35,16],[32,8,33,10],[32,11,33,11],[32,12,33,12],[32,13,33,13],[32,14,33,16],[34,1,35,1],[34,2,35,2],[34,3,35,3],[34,4,35,4],[34,5,35,6],[30,12,31,12],[30,13,31,13],[30,14,31,16],[32,1,33,1],[32,2,33,2],[32,3,33,3],[32,4,33,4],[32,5,33,5],[32,6,33,6],[32,7,33,7],[28,14,29,16],[30,1,31,1],[30,2,31,2],[30,3,31,3],[30,4,31,4],[30,5,31,5],[30,6,31,6],[30,7,31,7],[30,8,31,10],[30,11,31,11],[28,6,29,6],[28,7,29,7],[28,8,29,10],[28,11,29,11],[28,12,29,12],[28,13,29,13],[26,8,27,10],[26,11,27,11],[26,12,27,12],[26,13,27,13],[26,14,27,16],[28,1,29,1],[28,2,29,2],[28,3,29,3],[28,4,29,4],[28,5,29,5],[24,13,25,13],[24,14,25,15],[24,16,25,16],[26,1,27,1],[26,2,27,2],[26,3,27,3],[26,4,27,4],[26,5,27,5],[26,6,27,6],[26,7,27,7],[24,6,25,6],[24,7,25,7],[24,8,25,9],[24,10,25,10],[24,11,25,11],[24,12,25,12],[22,10,23,10],[22,11,23,11],[22,12,23,12],[22,13,23,13],[22,14,23,16],[24,1,25,1],[24,2,25,2],[24,3,25,3],[24,4,25,4],[24,5,25,5],[20,14,21,15],[20,16,21,16],[22,1,23,1],[22,2,23,2],[22,3,23,3],[22,4,23,4],[22,5,23,5],[22,6,23,6],[22,7,23,7],[22,8,23,9],[20,7,21,7],[20,8,21,9],[20,10,21,10],[20,11,21,11],[20,12,21,12],[20,13,21,13],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[20,5,21,5],[20,6,21,6],[18,7,19,7],[18,8,19,10],[18,11,19,11],[18,12,19,12],[18,13,19,13],[18,14,19,16],[18,1,19,1],[18,2,19,2],[18,3,19,3],[18,4,19,4],[18,5,19,5],[18,6,19,6],[16,7,17,7],[16,8,17,10],[16,11,17,11],[16,12,17,12],[16,13,17,13],[16,14,17,16],[16,1,17,1],[16,2,17,2],[16,3,17,3],[16,4,17,4],[16,5,17,5],[16,6,17,6],[14,7,15,7],[14,8,15,10],[14,11,15,11],[14,12,15,12],[14,13,15,13],[14,14,15,16],[12,13,13,13],[12,14,13,14],[12,15,13,15],[12,16,13,16],[14,1,15,1],[14,2,15,2],[14,3,15,3],[14,4,15,4],[14,5,15,5],[14,6,15,6],[12,7,13,7],[12,8,13,8],[12,9,13,9],[12,10,13,10],[12,11,13,11],[12,12,13,12],[12,1,13,1],[12,2,13,2],[12,3,13,3],[12,4,13,4],[12,5,13,5],[12,6,13,6],[7,11,11,11],[7,13,11,13],[7,14,7,16],[8,14,8,16],[9,14,9,16],[10,14,10,16],[11,14,11,16],[7,7,11,7],[7,8,7,10],[8,8,8,10],[9,8,9,10],[10,8,10,10],[11,8,11,10],[7,4,11,4],[7,5,7,6],[8,5,8,6],[9,5,9,6],[10,5,10,6],[11,5,11,6],[4,1,4,16],[6,2,6,3],[6,5,6,10],[6,14,6,16],[7,1,11,1],[7,2,7,3],[8,2,8,3],[9,2,9,3],[10,2,10,3],[11,2,11,3]]}
["Equity Incentive Plans and Benefit Plans (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Disclosure of Compensation Related Costs, Share-based Payments [Abstract]"]
["Shares Available for Grant and Outstanding Stock Option Activity","The following table summarizes information about shares available for grant and outstanding stock option activity: "]
[]
[]
[{"$nulls":5},"Options Outstanding"]
[null,null,"Shares",null,null,"Number of",null,null,"Weighted",null,null,null,"Weighted",null,"Aggregate"]
[null,null,"Available for",null,null,"Shares",null,null,"Average",null,null,null,"Average",null,"Intrinsic"]
[null,null,"Grant",{"$nulls":5},"Exercise",null,null,null,"Remaining",null,"Value"]
[{"$nulls":8},"Price",null,null,null,"Contractual",null,"(in thousands)"]
[{"$nulls":8},"per Share",null,null,null,"Term (Years)"]
[null,"Balance at July 31, 2013",557585,null,null,10047569,null,null,"$",6.29,null,null,2.9,null,"$",121227]
[]
[null,"Shares reserved for issuance",5670469]
[]
[null,"Restricted stock awards granted","(4,350,155",")"]
[]
[null,"Restricted stock awards forfeited",1238196]
[]
[null,"Options exercised","—",null,null,"(2,778,312",")",null,3.73,{"$nulls":5},42871]
[]
[null,"Options cancelled",131142,null,null,"(131,142",")",null,19.98]
[]
[null,"Balance at July 31, 2014",3247237,null,null,7138115,null,null,7.03,null,null,null,2,null,82533]
[]
[null,"Shares reserved for issuance",5377830]
[]
[null,"Restricted stock awards granted","(2,441,672",")"]
[]
[null,"Restricted stock awards forfeited",1016745]
[]
[null,"Market stock units granted","(595,000",")"]
[]
[null,"Market stock units forfeited",30000]
[]
[null,"Options exercised","—",null,null,"(1,996,705",")",null,3.89,{"$nulls":5},32147]
[]
[null,"Options cancelled",15547,null,null,"(15,547",")",null,21.82]
[]
[null,"Balance at January 31, 2015",6650687,null,null,5125863,null,null,"$",8.2100000000000009,null,null,1.6,null,"$",49331]
[]
["Non-Vested Restricted Stock Awards Activity","The following table summarizes information about non-vested restricted stock awards and units: "]
[]
[]
[null,null,"Shares",null,null,"Weighted "]
[{"$nulls":5},"Average"]
[{"$nulls":5},"Grant Date"]
[{"$nulls":5},"Fair Value"]
[{"$nulls":5},"per Share"]
[null,"Balance at July 31, 2013",10787754,null,null,"$",18.87]
[]
[null,"Awards granted",4350155,null,null,18.670000000000002]
[]
[null,"Awards vested","(5,009,273",")",null,19.07]
[]
[null,"Awards forfeited","(1,238,196",")",null,19.28]
[]
[null,"Balance at July 31, 2014",8890440,null,null,18.61]
[]
[null,"Awards granted",2441672,null,null,22.82]
[]
[null,"Awards vested","(2,520,714",")",null,20.420000000000002]
[]
[null,"Awards forfeited","(1,016,745",")",null,19.170000000000002]
[]
[null,"Balance at January 31, 2015",7794653,null,null,"$",19.260000000000002]
[]
["Employee Stock Purchase Plan Assumptions","The fair value of the purchase right for the Employee Stock Purchase Plan (\"ESPP\") is estimated on the date of grant using the Black-Scholes model with the following weighted average assumptions:"]
[]
[]
[null,null,"Six Months Ended January 31,"]
[null,null,2015,null,2014]
[null,"Risk-free interest rates","0.1% to 0.5%",null,"0.1% to 0.4%"]
[null,"Expected term (in years)","0.5 to 2.0",null,"0.5 to 2.0"]
[null,"Dividend yield","—%",null,"—%"]
[null,"Volatility","37.7% to 49.8%",null,"57.2% to 64.4%"]
["Summary of Employee Stock Purchase Plan","The following table summarizes the shares issued and the weighted average purchase price per share for each ESPP purchase date during the first half of fiscal 2015 and 2014:"]
[]
[]
[null,null,"September 1,",null,null,null,"September 1,"]
[null,null,2014,null,null,null,2013]
[null,"Shares issued",565396,null,null,null,432749]
[]
[null,"Weighted average purchase price per share","$",14.64,null,null,"$",14.12]
[]
["Market Stock Unit Valuation Assumptions","The fair value of the MSUs granted during the first half of fiscal 2015 was estimated using the following weighted-average assumptions:"]
[]
[]
[null,null,"Six Months Ended"]
[null,null,"January 31, 2015"]
[null,"Risk-free interest rates",1.03E-2]
[null,"Expected term (in years)",2.87]
[null,"Dividend yield","—%"]
[null,"Volatility",0.50729999999999997]
["Summary of Market Stock Unit Activity","The following table summarizes information about the MSU awards granted in the first half of fiscal 2015:"]
[]
[]
[null,null,"Target",null,null,"Maximum"]
[null,null,"Shares",null,null,"Shares Eligible"]
[null,null,"Granted",null,null,"to Receive"]
[null,"Balance at July 31, 2014"]
[]
[null,"Awarded",595000,null,null,892500]
[]
[null,"Forfeited","(30,000",")",null,"—"]
[]
[null,"Earned","—",null,null,"—"]
[]
[null,"Balance at January 31, 2015",565000,null,null,892500]
[]
["Summary of Market Stock Unit Shares Outstanding","The following table summarizes information about the outstanding MSUs at January 31, 2015:"]
[]
[]
[null,null,"Number of",null,null,"Weighted",null,"Aggregate"]
[null,null,"Shares",null,null,"Average Remaining Contractual Life ",null,"Intrinsic"]
[{"$nulls":7},"Value (*)"]
[{"$nulls":5},"(years)",null,"(in thousands)"]
[null,"MSUs outstanding",565000,null,null,2.5,null,"$",9368]
[]
[null,"MSUs vested and expected to vest",531773,null,null,2.5,null,"$",8817]
[]
[null,"(*) The intrinsic value is calculated as the market value as of the end of the fiscal period. As reported by the NASDAQ Global Select Market, the market value at January 31, 2015 was $16.58."]
["Summary of Market Stock Unit Shares Vested and Expected to Vest","The following table summarizes information about the outstanding MSUs at January 31, 2015:"]
[]
[]
[null,null,"Number of",null,null,"Weighted",null,"Aggregate"]
[null,null,"Shares",null,null,"Average Remaining Contractual Life ",null,"Intrinsic"]
[{"$nulls":7},"Value (*)"]
[{"$nulls":5},"(years)",null,"(in thousands)"]
[null,"MSUs outstanding",565000,null,null,2.5,null,"$",9368]
[]
[null,"MSUs vested and expected to vest",531773,null,null,2.5,null,"$",8817]
[]
[null,"(*) The intrinsic value is calculated as the market value as of the end of the fiscal period. As reported by the NASDAQ Global Select Market, the market value at January 31, 2015 was $16.58."]
["Stock-Based Compensation Expenses","Stock-based compensation expense consists primarily of expenses for stock options, restricted stock awards, MSUs, and employee stock purchase rights granted to employees. The following table summarizes stock-based compensation expense recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Cost of revenue","$",1745,null,null,"$",2202,null,null,"$",3444,null,null,"$",4360]
[]
[null,"Research and development",8977,null,null,null,11306,null,null,null,18541,null,null,null,22114]
[]
[null,"Sales and marketing",8902,null,null,null,11071,null,null,null,18478,null,null,null,21382]
[]
[null,"General and administrative",3844,null,null,null,4165,null,null,null,7558,null,null,null,8307]
[]
[null,"Restructuring charges","—",null,null,null,"—",null,null,null,273,null,null,null,"—"]
[]
[null,"Total","$",23468,null,null,"$",28744,null,null,"$",48294,null,null,"$",56163]
[]
[null,"The following table presents stock-based compensation expense by award-type:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"Stock options","$",333,null,null,"$",1259,null,null,"$",1016,null,null,"$",2958]
[]
[null,"Stock awards",18631,null,null,null,25098,null,null,null,39438,null,null,null,48932]
[]
[null,"Employee stock purchase plan",1950,null,null,null,2387,null,null,null,4073,null,null,null,4273]
[]
[null,"Market stock units",2554,null,null,null,"—",null,null,null,3767,null,null,null,"—"]
[]
[null,"Total","$",23468,null,null,"$",28744,null,null,"$",48294,null,null,"$",56163]

{"sheet":"Restructuring_Charges_Tables","index":25,"n_rows":39,"n_cols":13,"rows_kept":39,"cut":false,"hidden":false,"merged":[[38,7,39,7],[38,8,39,8],[0,0,1,0],[0,1,0,12],[1,1,1,12],[2,1,2,12],[3,0,23,0],[3,1,3,12],[24,0,39,0],[24,1,24,12],[38,1,39,1],[38,2,39,2],[38,3,39,3],[38,4,39,4],[38,5,39,5],[38,6,39,6],[36,1,37,1],[36,2,37,3],[36,4,37,4],[36,5,37,5],[36,6,37,7],[36,8,37,8],[34,1,35,1],[34,2,35,3],[34,4,35,4],[34,5,35,5],[34,6,35,7],[34,8,35,8],[32,1,33,1],[32,2,33,3],[32,4,33,4],[32,5,33,5],[32,6,33,7],[32,8,33,8],[29,2,29,8],[30,1,31,1],[30,2,31,2],[30,3,31,3],[30,4,31,4],[30,5,31,5],[30,6,31,6],[30,7,31,7],[30,8,31,8],[22,12,23,12],[25,1,25,8],[27,2,27,4],[27,6,27,8],[28,2,28,4],[28,6,28,8],[22,6,23,6],[22,7,23,7],[22,8,23,8],[22,9,23,9],[22,10,23,10],[22,11,23,11],[19,10,20,11],[19,12,20,12],[21,2,21,3],[21,6,21,7],[21,10,21,11],[22,1,23,1],[22,2,23,2],[22,3,23,3],[22,4,23,4],[22,5,23,5],[17,9,18,9],[17,10,18,11],[17,12,18,12],[19,1,20,1],[19,2,20,3],[19,4,20,4],[19,5,20,5],[19,6,20,7],[19,8,20,8],[19,9,20,9],[15,9,16,9],[15,10,16,10],[15,11,16,11],[15,12,16,12],[17,1,18,1],[17,2,18,3],[17,4,18,4],[17,5,18,5],[17,6,18,7],[17,8,18,8],[13,10,14,11],[13,12,14,12],[15,1,16,1],[15,2,16,2],[15,3,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,6],[15,7,16,7],[15,8,16,8],[12,2,12,3],[12,6,12,7],[12,10,12,11],[13,1,14,1],[13,2,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,7],[13,8,14,8],[13,9,14,9],[8,12,9,12],[10,1,11,1],[10,2,11,3],[10,4,11,4],[10,5,11,5],[10,6,11,7],[10,8,11,8],[10,9,11,9],[10,10,11,11],[10,12,11,12],[8,6,9,6],[8,7,9,7],[8,8,9,8],[8,9,9,9],[8,10,9,10],[8,11,9,11],[4,1,4,12],[6,2,6,4],[6,6,6,8],[6,10,6,12],[7,2,7,12],[8,1,9,1],[8,2,9,2],[8,3,9,3],[8,4,9,4],[8,5,9,5]]}
["Restructuring Charges (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Restructuring and Related Activities [Abstract]"]
["Summary of restructuring activities","The following table summarizes the restructuring activities through January 31, 2015:"]
[]
[]
[null,null,"Employee Severance and Benefits",null,null,null,"Other",null,null,null,"Total"]
[null,null,"(in thousands)"]
[null,"Balance at July 31, 2014","$","—",null,null,"$","—",null,null,"$","—"]
[]
[null,"Gross charges",6203,null,null,null,351,null,null,null,6554]
[]
[null,"Cash payments","(2,743",null,")",null,"(351",null,")",null,"(3,094",null,")"]
[null,"Non-cash charges","(273",null,")",null,"—",null,null,null,"(273",null,")"]
[]
[null,"Balance at October 31, 2014","$",3187,null,null,"$","—",null,null,"$",3187]
[]
[null,"Gross charges",58,null,null,null,228,null,null,null,286]
[]
[null,"Change in estimate related to first quarter of fiscal 2015","(768",null,")",null,"—",null,null,null,"(768",null,")"]
[]
[null,"Cash payments","(1,874",null,")",null,"(228",null,")",null,"(2,102",null,")"]
[null,"Balance at January 31, 2015","$",603,null,null,"$","—",null,null,"$",603]
[]
["Other One-time Restructuring Charges","The following table summarizes other one-time charges recorded in the Condensed Consolidated Statements of Operations:"]
[]
[]
[null,null,"Three Months Ended",null,null,null,"Six Months Ended"]
[null,null,"January 31, 2015",null,null,null,"January 31, 2015"]
[null,null,"(in thousands)"]
[null,"Cost of revenue","$",26,null,null,"$",27]
[]
[null,"Research and development",7,null,null,null,7]
[]
[null,"Sales and marketing",286,null,null,null,370]
[]
[null,"General and administrative",792,null,null,null,1139]
[]
[null,"Total","$",1111,null,null,"$",1543]

{"sheet":"Segment_Information_and_Signif1","index":26,"n_rows":49,"n_cols":16,"rows_kept":49,"cut":false,"hidden":false,"merged":[[26,0,35,0],[26,1,26,16],[35,1,35,16],[36,0,49,0],[36,1,36,16],[48,7,49,7],[48,8,49,8],[0,0,1,0],[0,1,0,16],[1,1,1,16],[2,1,2,16],[3,0,18,0],[3,1,3,16],[19,0,25,0],[19,1,19,16],[48,1,49,1],[48,2,49,2],[48,3,49,3],[48,4,49,4],[48,5,49,5],[48,6,49,6],[46,1,47,1],[46,2,47,3],[46,4,47,4],[46,5,47,5],[46,6,47,7],[46,8,47,8],[44,1,45,1],[44,2,45,3],[44,4,45,4],[44,5,45,5],[44,6,45,7],[44,8,45,8],[41,2,41,8],[42,1,43,1],[42,2,43,2],[42,3,43,3],[42,4,43,4],[42,5,43,5],[42,6,43,6],[42,7,43,7],[42,8,43,8],[37,1,37,8],[39,1,40,1],[39,2,39,4],[40,2,40,4],[39,5,40,5],[39,6,39,8],[40,6,40,8],[17,16,18,16],[20,1,20,8],[22,2,22,4],[22,6,22,8],[27,1,27,4],[29,1,30,1],[29,3,30,3],[17,10,18,10],[17,11,18,11],[17,12,18,12],[17,13,18,13],[17,14,18,14],[17,15,18,15],[15,16,16,16],[17,1,18,1],[17,2,18,2],[17,3,18,3],[17,4,18,4],[17,5,18,5],[17,6,18,6],[17,7,18,7],[17,8,18,8],[17,9,18,9],[15,8,16,8],[15,9,16,9],[15,10,16,11],[15,12,16,12],[15,13,16,13],[15,14,16,15],[13,10,14,11],[13,12,14,12],[13,13,14,13],[13,14,14,15],[13,16,14,16],[15,1,16,1],[15,2,16,3],[15,4,16,4],[15,5,16,5],[15,6,16,7],[11,13,12,13],[11,14,12,15],[11,16,12,16],[13,1,14,1],[13,2,14,3],[13,4,14,4],[13,5,14,5],[13,6,14,7],[13,8,14,8],[13,9,14,9],[9,16,10,16],[11,1,12,1],[11,2,12,3],[11,4,12,4],[11,5,12,5],[11,6,12,7],[11,8,12,8],[11,9,12,9],[11,10,12,11],[11,12,12,12],[9,10,10,10],[9,11,10,11],[9,12,10,12],[9,13,10,13],[9,14,10,14],[9,15,10,15],[8,2,8,16],[9,1,10,1],[9,2,10,2],[9,3,10,3],[9,4,10,4],[9,5,10,5],[9,6,10,6],[9,7,10,7],[9,8,10,8],[9,9,10,9],[4,1,4,16],[6,2,6,8],[6,10,6,16],[7,2,7,4],[7,6,7,8],[7,10,7,12],[7,14,7,16]]}
["Segment Information and Significant Customers (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Segment Reporting [Abstract]"]
["Schedule of Total Revenue by Geographic Region","The following table summarizes the Company's total revenue by geographic region:"]
[]
[]
[null,null,"Three Months Ended January 31,",{"$nulls":7},"Six Months Ended January 31,"]
[null,null,2015,null,null,null,2014,null,null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"United States","$",134931,null,null,"$",113890,null,null,"$",267696,null,null,"$",222205]
[]
[null,"Europe, Middle East and Africa",42706,null,null,null,33768,null,null,null,87563,null,null,null,59764]
[]
[null,"Asia Pacific",29188,null,null,null,24260,null,null,null,55194,null,null,null,47254]
[]
[null,"Rest of World",6106,null,null,null,4438,null,null,null,10299,null,null,null,8060]
[]
[null,"Total","$",212931,null,null,"$",176356,null,null,"$",420752,null,null,"$",337283]
[]
["Significant Channel Partners as Percentage of Total Revenues","The following table presents significant channel partners contributing 10% or more of total revenue:"]
[]
[]
[null,null,"Three Months Ended January 31,",null,null,null,"Six Months Ended January 31,"]
[null,null,2015,null,2014,null,2015,null,2014]
[null,"ScanSource, Inc.",0.17399999999999999,null,0.20300000000000001,null,0.17499999999999999,null,0.20799999999999999]
[null,"Synnex Corp.","*",null,0.109,null,0.11,null,0.122]
["Summary of Significant Channel Partners as Percentage of Total Accounts Receivable","The following table presents significant channel partners accounting for 10% or more of the balance of net accounts receivable: "]
[]
[]
[null,null,"January 31,",null,"July 31,"]
[null,null,2015,null,2014]
[null,"ScanSource, Inc.",0.111,null,0.17199999999999999]
[null,"Synnex Corp.","*",null,0.11799999999999999]
[null,"Avnet Logistics U.S. LP",0.16600000000000001,null,0.153]
[null,"Dell, Inc.","*",null,0.115]
[null,"(*) Indicates less than 10%."]
["Schedule of Long-lived Assets by Geographic Region","The following table summarizes the Company's property and equipment by geographic region based on the location of the asset:"]
[]
[]
[null,null,"January 31,",null,null,null,"July 31,"]
[null,null,2015,null,null,null,2014]
[null,null,"(in thousands)"]
[null,"United States","$",20217,null,null,"$",18242]
[]
[null,"India",5907,null,null,null,4894]
[]
[null,"All other countries",4236,null,null,null,4125]
[]
[null,"Total","$",30360,null,null,"$",27261]

{"sheet":"Commitments_and_Contingencies_","index":27,"n_rows":44,"n_cols":5,"rows_kept":44,"cut":false,"hidden":false,"merged":[[22,0,44,0],[22,1,22,4],[0,0,1,0],[0,1,0,4],[1,1,1,4],[2,1,2,4],[3,0,21,0],[3,1,3,4],[40,1,41,1],[40,2,41,3],[40,4,41,4],[42,2,42,3],[43,1,44,1],[43,2,44,2],[43,3,44,3],[43,4,44,4],[34,1,34,4],[36,2,36,4],[37,2,37,4],[38,1,39,1],[38,2,39,2],[38,3,39,3],[38,4,39,4],[29,1,30,1],[29,2,30,3],[29,4,30,4],[31,2,31,3],[32,1,33,1],[32,2,33,2],[32,3,33,3],[32,4,33,4],[23,1,23,4],[25,2,25,4],[26,2,26,4],[27,1,28,1],[27,2,28,2],[27,3,28,3],[27,4,28,4],[18,1,19,1],[18,2,19,3],[18,4,19,4],[20,1,21,1],[20,2,21,2],[20,3,21,3],[20,4,21,4],[14,1,15,1],[14,2,15,3],[14,4,15,4],[16,1,17,1],[16,2,17,3],[16,4,17,4],[10,1,11,1],[10,2,11,3],[10,4,11,4],[12,1,13,1],[12,2,13,3],[12,4,13,4],[4,1,4,4],[6,2,6,4],[7,2,7,4],[8,1,9,1],[8,2,9,2],[8,3,9,3],[8,4,9,4]]}
["Commitments and Contingencies (Tables)","6 Months Ended"]
[null,"Jan. 31, 2015"]
["Commitments and Contingencies Disclosure [Abstract]"]
["Future Minimum Lease Payments Under Non-Cancelable Operating Leases","The following table summarizes the Company's future minimum lease payments under non-cancelable operating leases at January 31, 2015:"]
[]
[]
[null,null,"Amount"]
[null,"Fiscal Year","(in thousands)"]
[null,"2015 (remaining six months)","$",4366]
[]
[null,2016,9168]
[]
[null,2017,4041]
[]
[null,2018,2210]
[]
[null,2019,847]
[]
[null,"Thereafter",2381]
[]
[null,"Total","$",23013]
[]
["Changes in Warranty Liability","The following table summarizes the activity related to the Company’s accrued liability for estimated future warranty costs: "]
[]
[]
[null,null,"Product Warranty"]
[null,"First half of fiscal 2015:","(in thousands)"]
[null,"Balance at July 31, 2014","$",943]
[]
[null,"Changes to the provision",657]
[]
[null,"Obligations fulfilled during period","(241",null,")"]
[null,"Balance at January 31, 2015","$",1359]
[]
[]
[]
[null,null,"Product Warranty"]
[null,"First half of fiscal 2014:","(in thousands)"]
[null,"Balance at July 31, 2013","$",777]
[]
[null,"Changes to the provision",365]
[]
[null,"Obligations fulfilled during period","(240",null,")"]
[null,"Balance at January 31, 2014","$",902]

{"sheet":"Goodwill_and_Intangible_Assets2","index":28,"n_rows":6,"n_cols":3,"rows_kept":6,"cut":false,"hidden":false,"merged":[]}
["Goodwill and Intangible Assets - Company's Goodwill (Detail) (USD $)","6 Months Ended","12 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jul. 31, 2014"]
["Goodwill [Roll Forward]"]
["Beginning Balance",67242,67242]
["Changes in goodwill",0,0]
["Ending Balance",67242,67242]

{"sheet":"Goodwill_and_Intangible_Assets3","index":29,"n_rows":72,"n_cols":3,"rows_kept":72,"cut":false,"hidden":false,"merged":[]}
["Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) (USD $)","6 Months Ended","12 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jul. 31, 2014"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",68531,65691]
["Accumulated Amortization",-50452,-46186]
["Net Value",18079,19505]
["Existing technology [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",41383,41383]
["Accumulated Amortization",-32505,-29196]
["Net Value",8878,12187]
["Existing technology [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","3 years","3 years"]
["Existing technology [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","7 years","7 years"]
["Patents [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",14636,11796]
["Accumulated Amortization",-6537,-5881]
["Net Value",8099,5915]
["Patents [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","2 years","2 years"]
["Patents [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","13 years","13 years"]
["Customer contracts [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",7533,7533]
["Accumulated Amortization",-6758,-6536]
["Net Value",775,997]
["Customer contracts [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","4 years","4 years"]
["Customer contracts [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","7 years","7 years"]
["Support agreements [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",2917,2917]
["Accumulated Amortization",-2856,-2839]
["Net Value",61,78]
["Support agreements [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","5 years","5 years"]
["Support agreements [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","6 years","6 years"]
["Tradenames and trademarks [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",1150,1150]
["Accumulated Amortization",-917,-867]
["Net Value",233,283]
["Tradenames and trademarks [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","1 year","1 year"]
["Tradenames and trademarks [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","5 years","5 years"]
["Non-compete agreements [Member]"]
["Finite-Lived Intangible Assets, Net [Abstract]"]
["Gross Value",912,912]
["Accumulated Amortization",-879,-867]
["Net Value",33,45]
["Non-compete agreements [Member] | Minimum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","2 years","2 years"]
["Non-compete agreements [Member] | Maximum [Member]"]
["Schedule of Intangible Assets by Major Class [Line Items]"]
["Estimated useful lives (in years)","4 years","4 years"]

{"sheet":"Goodwill_and_Intangible_Assets4","index":30,"n_rows":16,"n_cols":5,"rows_kept":16,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["Goodwill and Intangible Assets - Summary of Amortization Expense of Intangible Assets (Detail) (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Finite Lived Intangible Assets Amortization Expense [Line Items]"]
["Amortization expense of intangible assets",2106,2384,4266,4748]
["Cost of product revenue [Member]"]
["Finite Lived Intangible Assets Amortization Expense [Line Items]"]
["Amortization expense of intangible assets",1941,2025,3936,4030]
["Sales and marketing [Member]"]
["Finite Lived Intangible Assets Amortization Expense [Line Items]"]
["Amortization expense of intangible assets",144,353,288,706]
["Research & development [Member]"]
["Finite Lived Intangible Assets Amortization Expense [Line Items]"]
["Amortization expense of intangible assets",6,6,13,12]
["General and administrative [Member]"]
["Finite Lived Intangible Assets Amortization Expense [Line Items]"]
["Amortization expense of intangible assets",15,0,29,0]

{"sheet":"Goodwill_and_Intangible_Assets5","index":31,"n_rows":10,"n_cols":3,"rows_kept":10,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Goodwill and Intangible Assets - Estimated Future Amortization Expense of Purchased Intangible Assets (Detail) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity"]
["2015 (remaining six months)",4279]
[2016,4829]
[2017,2018]
[2018,1764]
[2019,1031]
["Thereafter",4158]
["Net Value",18079,19505]

{"sheet":"Net_Income_Loss_Per_Common_Sha2","index":32,"n_rows":9,"n_cols":5,"rows_kept":9,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["Net Income (Loss) Per Common Share - Computation of Net Loss Per Share (Detail) (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, except Per Share data, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Earnings Per Share [Abstract]"]
["Net income (loss)",5683,-10701,8426,-18528]
["Weighted-average shares outstanding - basic",107891,107153,108132,109608]
["Dilutive effect of potential shares",5502,0,6579,0]
["Weighted-average shares outstanding - diluted",113393,107153,114711,109608]
["Net income (loss) per share - basic (in dollars per share)",0.05,-0.1,0.08,-0.17]
["Net income (loss) per share - diluted (in dollars per share)",0.05,-0.1,7.0000000000000007E-2,-0.17]

{"sheet":"Net_Income_Loss_Per_Common_Sha3","index":33,"n_rows":11,"n_cols":5,"rows_kept":11,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["Net Income (Loss) Per Common Share - Summary of Outstanding Stock Options and Awards (Detail)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Options to purchase common stock [Member]"]
["Dilutive Securities Included And Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]"]
["Antidilutive shares excluded from calculation of diluted net income (loss) per share",1013,1102,1023,1201]
["Restricted stock awards [Member]"]
["Dilutive Securities Included And Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]"]
["Antidilutive shares excluded from calculation of diluted net income (loss) per share",1833,1345,1357,1295]
["Market stock units [Member]"]
["Dilutive Securities Included And Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]"]
["Antidilutive shares excluded from calculation of diluted net income (loss) per share",580,0,429,0]

{"sheet":"ShortTerm_Investments_Summary_","index":34,"n_rows":37,"n_cols":3,"rows_kept":37,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Short-Term Investments - Summary of Short-Term Investments (Detail) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",138997,166315]
["Gross Unrealized Gains",74,117]
["Gross Unrealized Losses",-22,-73]
["Fair Value",139049,166359]
["Corporate bonds [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",44254,54969]
["Gross Unrealized Gains",27,79]
["Gross Unrealized Losses",-8,-15]
["Fair Value",44273,55033]
["U.S. government agency securities [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",79514,90681]
["Gross Unrealized Gains",42,17]
["Gross Unrealized Losses",-14,-58]
["Fair Value",79542,90640]
["U.S. treasury bills [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",9834,14560]
["Gross Unrealized Gains",3,17]
["Gross Unrealized Losses",0,0]
["Fair Value",9837,14577]
["Commercial paper [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",5395,4587]
["Gross Unrealized Gains",2,4]
["Gross Unrealized Losses",0,0]
["Fair Value",5397,4591]
["Municipal notes and bonds [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Cost Basis",null,1518]
["Gross Unrealized Gains",null,0]
["Gross Unrealized Losses",null,0]
["Fair Value",null,1518]

{"sheet":"ShortTerm_Investments_Cost_Bas","index":35,"n_rows":9,"n_cols":3,"rows_kept":9,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Short-Term Investments - Cost Basis and Fair Value of Debt Securities by Contractual Maturity (Detail) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Investments, Debt and Equity Securities [Abstract]"]
["One year or less, Cost Basis",75684,110184]
["Over one year and less than two years, Cost Basis",63313,56131]
["Total short-term investments, Cost Basis",138997,166315]
["One year or less, Fair Value",75709,110280]
["Over one year and less than two years, Fair Value",63340,56079]
["Total short-term investments, Fair Value",139049,166359]

{"sheet":"ShortTerm_Investments_Fair_Val","index":36,"n_rows":13,"n_cols":3,"rows_kept":13,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Short-Term Investments - Fair Value and Gross Unrealized Losses of Company's Investments (Detail) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Less than 12 Months, Fair Value",46009,71667]
["Less than 12 Months, Unrealized Loss",-22,-73]
["Corporate bonds [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Less than 12 Months, Fair Value",15396,14101]
["Less than 12 Months, Unrealized Loss",-8,-15]
["U.S. government agency securities [Member]"]
["Schedule of Available-for-sale Securities [Line Items]"]
["Less than 12 Months, Fair Value",30613,57566]
["Less than 12 Months, Unrealized Loss",-14,-58]

{"sheet":"ShortTerm_Investments_Addition","index":37,"n_rows":6,"n_cols":3,"rows_kept":6,"cut":false,"hidden":false,"merged":[[0,0,2,0]]}
["Short-Term Investments - Additional Information (Detail) (USD $)","6 Months Ended","12 Months Ended"]
[null,"Jan. 31, 2015","Jul. 31, 2014"]
[null,"position","position"]
["Investments, Debt and Equity Securities [Abstract]"]
["Investments related to credit losses",0,0]
["Securities having unrealized loss position for more than one year",0,0]

{"sheet":"Fair_Value_of_Financial_Instru2","index":38,"n_rows":5,"n_cols":3,"rows_kept":5,"cut":false,"hidden":false,"merged":[]}
["Fair Value of Financial Instruments - Additional Information (Detail) (USD $)","6 Months Ended"]
["In Millions, unless otherwise specified","Jan. 31, 2015","Jul. 31, 2014"]
["Fair Value Disclosures [Abstract]"]
["Maximum maturity period of cash and cash equivalents","90 days"]
["Investment in privately-held company",3,1.8]

{"sheet":"Fair_Value_of_Financial_Instru3","index":39,"n_rows":103,"n_cols":3,"rows_kept":103,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Fair Value of Financial Instruments - Fair Value Measurement on Recurring Basis (Detail) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Assets"]
["Short-term investments",139049,166359]
["Corporate bonds [Member]"]
["Assets"]
["Short-term investments",44273,55033]
["U.S. government agency securities [Member]"]
["Assets"]
["Short-term investments",79542,90640]
["U.S. treasury bills [Member]"]
["Assets"]
["Short-term investments",9837,14577]
["Commercial paper [Member]"]
["Assets"]
["Short-term investments",5397,4591]
["Municipal notes and bonds [Member]"]
["Assets"]
["Short-term investments",null,1518]
["Fair Value, Measurements Recurring [Member] | Total [Member]"]
["Assets"]
["Cash deposits with third-party financial institutions",122634,113303]
["Money market funds",27815,2291]
["Total",290998,284953]
["Fair Value, Measurements Recurring [Member] | Corporate bonds [Member] | Total [Member]"]
["Assets"]
["Short-term investments",44273,55033]
["Fair Value, Measurements Recurring [Member] | U.S. government agency securities [Member] | Total [Member]"]
["Assets"]
["Short-term investments",79542,90640]
["Fair Value, Measurements Recurring [Member] | U.S. treasury bills [Member] | Total [Member]"]
["Assets"]
["Short-term investments",9837,14577]
["Fair Value, Measurements Recurring [Member] | Commercial paper [Member] | Total [Member]"]
["Assets"]
["Commercial paper",1500,3000]
["Short-term investments",5397,4591]
["Fair Value, Measurements Recurring [Member] | Municipal notes and bonds [Member] | Total [Member]"]
["Assets"]
["Short-term investments",null,1518]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member]"]
["Assets"]
["Cash deposits with third-party financial institutions",122634,113303]
["Money market funds",27815,2291]
["Total",150449,115594]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member] | Corporate bonds [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member] | U.S. government agency securities [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member] | U.S. treasury bills [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member] | Commercial paper [Member]"]
["Assets"]
["Commercial paper",0,0]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 1 [Member] | Municipal notes and bonds [Member]"]
["Assets"]
["Short-term investments",null,0]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member]"]
["Assets"]
["Cash deposits with third-party financial institutions",0,0]
["Money market funds",0,0]
["Total",140549,169359]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member] | Corporate bonds [Member]"]
["Assets"]
["Short-term investments",44273,55033]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member] | U.S. government agency securities [Member]"]
["Assets"]
["Short-term investments",79542,90640]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member] | U.S. treasury bills [Member]"]
["Assets"]
["Short-term investments",9837,14577]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member] | Commercial paper [Member]"]
["Assets"]
["Commercial paper",1500,3000]
["Short-term investments",5397,4591]
["Fair Value, Measurements Recurring [Member] | Level 2 [Member] | Municipal notes and bonds [Member]"]
["Assets"]
["Short-term investments",null,1518]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member]"]
["Assets"]
["Cash deposits with third-party financial institutions",0,0]
["Money market funds",0,0]
["Total",0,0]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member] | Corporate bonds [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member] | U.S. government agency securities [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member] | U.S. treasury bills [Member]"]
["Assets"]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member] | Commercial paper [Member]"]
["Assets"]
["Commercial paper",0,0]
["Short-term investments",0,0]
["Fair Value, Measurements Recurring [Member] | Level 3 [Member] | Municipal notes and bonds [Member]"]
["Assets"]
["Short-term investments",null,0]

{"sheet":"Condensed_Consolidated_Balance2","index":40,"n_rows":6,"n_cols":3,"rows_kept":6,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Condensed Consolidated Balance Sheet Components - Inventory (Details) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Balance Sheet Components [Abstract]"]
["Raw materials",472,348]
["Finished goods",44801,39488]
["Total",45273,39836]

{"sheet":"Condensed_Consolidated_Balance3","index":41,"n_rows":52,"n_cols":6,"rows_kept":52,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2],[0,3,0,4]]}
["Condensed Consolidated Balance Sheet Components - Property and Equipment, net (Detail) (USD $)","3 Months Ended",null,"6 Months Ended",null,"12 Months Ended"]
[null,"Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014","Jul. 31, 2014"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",104929000,null,104929000,null,91838000]
["Less: accumulated depreciation and amortization",-74569000,null,-74569000,null,-64577000]
["Total, net",30360000,null,30360000,null,27261000]
["Depreciation and amortization expense",4900000,4800000,10000000,9500000]
["Computer equipment [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",26993000,null,26993000,null,25779000]
["Computer equipment [Member] | Minimum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"2 years",null,"2 years"]
["Computer equipment [Member] | Maximum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"5 years",null,"5 years"]
["Computer software [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",19341000,null,19341000,null,16675000]
["Computer software [Member] | Minimum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"2 years",null,"2 years"]
["Computer software [Member] | Maximum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"5 years",null,"5 years"]
["Machinery and equipment [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",42951000,null,42951000,null,36500000]
["Machinery and equipment [Member] | Minimum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"2 years",null,"2 years"]
["Machinery and equipment [Member] | Maximum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"5 years",null,"5 years"]
["Furniture and fixtures [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",5299000,null,5299000,null,4756000]
["Furniture and fixtures [Member] | Minimum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"2 years",null,"2 years"]
["Furniture and fixtures [Member] | Maximum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"5 years",null,"5 years"]
["Leasehold improvements [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Total, gross",10345000,null,10345000,null,8128000]
["Leasehold improvements [Member] | Minimum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"1 year",null,"1 year"]
["Leasehold improvements [Member] | Maximum [Member]"]
["Property, Plant and Equipment [Line Items]"]
["Estimated useful lives (in years)",null,null,"6 years",null,"6 years"]

{"sheet":"Condensed_Consolidated_Balance4","index":42,"n_rows":7,"n_cols":3,"rows_kept":7,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Condensed Consolidated Balance Sheet Components - Accrued Liabilities (Details) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Balance Sheet Components [Abstract]"]
["Compensation and benefits",42946,37737]
["Marketing",27420,24782]
["Other",24855,18059]
["Total accrued liabilities",95221,80578]

{"sheet":"Condensed_Consolidated_Balance5","index":43,"n_rows":20,"n_cols":3,"rows_kept":20,"cut":false,"hidden":false,"merged":[]}
["Condensed Consolidated Balance Sheet Components - Deferred Revenue (Details) (USD $)","6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jul. 31, 2014"]
["Deferred Revenue Arrangement [Line Items]"]
["Deferred revenue, current",153510,135160]
["Deferred revenue, non-current",47225,44977]
["Total deferred revenue",200735,180137]
["Minimum [Member]"]
["Deferred Revenue Arrangement [Line Items]"]
["Support period of deferred professional services and support revenue (in years)","1 year"]
["Maximum [Member]"]
["Deferred Revenue Arrangement [Line Items]"]
["Support period of deferred professional services and support revenue (in years)","5 years"]
["Product [Member]"]
["Deferred Revenue Arrangement [Line Items]"]
["Deferred revenue, current",59525,50678]
["Deferred revenue, non-current",2629,3497]
["Support and professional services [Member]"]
["Deferred Revenue Arrangement [Line Items]"]
["Deferred revenue, current",93985,84482]
["Deferred revenue, non-current",44596,41480]

{"sheet":"Income_Taxes_Details","index":44,"n_rows":24,"n_cols":6,"rows_kept":24,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2],[0,3,0,4]]}
["Income Taxes (Details) (USD $)","3 Months Ended",null,"6 Months Ended",null,"12 Months Ended"]
[null,"Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014","Jul. 31, 2015"]
["Operating Loss Carryforwards [Line Items]"]
["Effective income tax rate",0.72699999999999998,2.073,0.72399999999999998,1.1599999999999999]
["Increase in provision for income tax",15167000,7219000,22075000,9949000]
["Minimum [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Deferred tax charges amortization period",null,null,"3 years"]
["Maximum [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Deferred tax charges amortization period",null,null,"11 years"]
["Prepaids and other assets [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Deferred tax charges unamortized",1000000,null,1000000]
["Other non-current assets [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Deferred tax charges unamortized",1500000,null,1500000]
["Scenario, Forecast [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Effective income tax rate",{"$nulls":4},0.77500000000000002]
["Change in enacted tax rate",{"$nulls":4},1.6E-2]
["Research Tax Credit Carryforward [Member]"]
["Operating Loss Carryforwards [Line Items]"]
["Increase in valuation allowance",null,null,1000000]

{"sheet":"Equity_Incentive_Plans_and_Ben2","index":45,"n_rows":30,"n_cols":4,"rows_kept":30,"cut":false,"hidden":false,"merged":[[0,2,0,3]]}
["Equity Incentive Plans and Benefit Plans - Shares Available for Grant and Outstanding Stock Option Activity (Detail) (USD $)","6 Months Ended","12 Months Ended"]
["In Thousands, except Share data, unless otherwise specified","Jan. 31, 2015","Jul. 31, 2014","Jul. 31, 2013"]
["Shares Available for Grant:"]
["Beginning balance",3247237,557585]
["Shares reserved for issuance",5377830,5670469]
["Options cancelled",15547,131142]
["Ending balance",6650687,3247237,557585]
["Options Outstanding, Number of shares:"]
["Beginning balance",7138115,10047569]
["Options exercised",-1996705,-2778312]
["Options cancelled",-15547,-131142]
["Ending balance",5125863,7138115,10047569]
["Options Outstanding, Weighted Average Exercise Price Per Share (in dollars per share):"]
["Beginning balance",7.03,6.29]
["Options exercised",3.89,3.73]
["Options cancelled",21.82,19.98]
["Ending balance",8.2100000000000009,7.03,6.29]
["Weighted average remaining contractual term (in years)","1 year 7 months 6 days","2 years","2 years 11 months 5 days"]
["Aggregate Intrinsic Value:"]
["Beginning balance",82533,121227]
["Options exercised",32147,42871]
["Ending balance",49331,82533,121227]
["Restricted stock awards [Member]"]
["Shares Available for Grant:"]
["Awards granted",-2441672,-4350155]
["Awards forfeited",1016745,1238196]
["Market stock units [Member]"]
["Shares Available for Grant:"]
["Awards granted",-595000]
["Awards forfeited",30000]

{"sheet":"Equity_Incentive_Plans_and_Ben3","index":46,"n_rows":15,"n_cols":3,"rows_kept":15,"cut":false,"hidden":false,"merged":[[0,0,1,0]]}
["Equity Incentive Plans and Benefit Plans - Non-Vested Restricted Stock Awards Activity (Detail) (Restricted stock awards [Member], USD $)","6 Months Ended","12 Months Ended"]
[null,"Jan. 31, 2015","Jul. 31, 2014"]
["Restricted stock awards [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]"]
["Beginning Balance",8890440,10787754]
["Awards granted",2441672,4350155]
["Awards vested",-2520714,-5009273]
["Awards forfeited",-1016745,-1238196]
["Ending Balance",7794653,8890440]
["Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]"]
["Weighted Average Grant Date Fair Value per Share, Beginning of Period",18.61,18.87]
["Awards granted",22.82,18.670000000000002]
["Awards vested",20.420000000000002,19.07]
["Awards forfeited",19.170000000000002,19.28]
["Weighted Average Grant Date Fair Value per Share, End of Period",19.260000000000002,18.61]

{"sheet":"Equity_Incentive_Plans_and_Ben4","index":47,"n_rows":14,"n_cols":3,"rows_kept":14,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2]]}
["Equity Incentive Plans and Benefit Plans - Employee Stock Purchase Plan Assumptions (Detail)","6 Months Ended"]
[null,"Jan. 31, 2015","Jan. 31, 2014"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Risk-free interest rates, Minimum",1E-3,1E-3]
["Risk-free interest rates, Maximum",5.0000000000000001E-3,4.0000000000000001E-3]
["Dividend yield",0,0]
["Volatility, Minimum",0.377,0.57199999999999995]
["Volatility, Maximum",0.498,0.64400000000000002]
["Minimum [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Expected term (in years)","6 months","6 months"]
["Maximum [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Expected term (in years)","2 years","2 years"]

{"sheet":"Equity_Incentive_Plans_and_Ben5","index":48,"n_rows":5,"n_cols":3,"rows_kept":5,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2]]}
["Equity Incentive Plans and Benefit Plans - Employee Stock Purchase Plan Activity (Details) (USD $)","0 Months Ended"]
[null,"Sep. 01, 2014","Sep. 01, 2013"]
["Disclosure of Compensation Related Costs, Share-based Payments [Abstract]"]
["Shares issued",565396,432749]
["Weighted average purchase price per share",14.64,14.12]

{"sheet":"Equity_Incentive_Plans_and_Ben6","index":49,"n_rows":55,"n_cols":5,"rows_kept":55,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4],[1,1,2,1],[1,2,2,2],[1,4,2,4]]}
["Equity Incentive Plans and Benefit Plans - Market Stock Units (Details) (USD $)","6 Months Ended",null,"3 Months Ended"]
["In Thousands, except Share data, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Oct. 31, 2014","Jan. 31, 2014"]
[null,null,null,"tranche"]
["Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]"]
["Dividend yield",0,0]
["Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]"]
["Share market value",16.579999999999998]
["Market stock units [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Awards granted",null,null,595000,0]
["Percentage of shares to be earned upon performance achievement",null,null,1]
["Performance achievement period",null,null,"3 years"]
["Number of tranches granted",null,null,3]
["Maximum percentage of target number of shares initially granted to be received",null,null,1.5]
["Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]"]
["Risk-free interest rates",1.03E-2]
["Expected term (in years)","2 years 10 months 13 days"]
["Dividend yield",0]
["Volatility",0.50729999999999997]
["Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]"]
["Awarded",null,null,595000,0]
["Ending Balance",565000]
["MSUs outstanding, Weighted Average Remaining Contractual Life","2 years 6 months"]
["MSUs outstanding, Aggregate Intrinsic Value",9368]
["MSUs vested and expected to vest, Number of Shares",531773]
["MSUs vested and expected to vest, Weighted Average Remaining Contractual Life","2 years 6 months"]
["MSUs vested and expected to vest, Aggregate Intrinsic Value",8817]
["Market Stock Units, Target Shares Granted [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Awards granted",595000]
["Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]"]
["Beginning Balance","  ",null,"  "]
["Awarded",595000]
["Forfeited",-30000]
["Ending Balance",565000]
["Market Stock Units, Maximum Shares Eligible to Receive [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Awards granted",892500]
["Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]"]
["Beginning Balance","  ",null,"  "]
["Awarded",892500]
["Forfeited",0]
["Ending Balance",892500]
["Tranche 3 [Member] | Market stock units [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Performance achievement period",null,null,"3 years"]
["Weighted average grant date fair value of awards granted",null,null,26.74]
["Tranche 2 [Member] | Market stock units [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Performance achievement period",null,null,"2 years"]
["Weighted average grant date fair value of awards granted",null,null,26.9]
["Tranche 1 [Member] | Market stock units [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Performance achievement period",null,null,"1 year"]
["Weighted average grant date fair value of awards granted",null,null,28.1]

{"sheet":"Equity_Incentive_Plans_and_Ben7","index":50,"n_rows":23,"n_cols":5,"rows_kept":23,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["Equity Incentive Plans and Benefit Plans - Stock-Based Compensation Expenses (Detail) (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock options",333,1259,1016,2958]
["Stock awards",18631,25098,39438,48932]
["Employee stock purchase plan",1950,2387,4073,4273]
["Market stock units",2554,0,3767,0]
["Stock-based compensation expense",23468,28744,48294,56163]
["Cost of revenue [Member]"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock-based compensation expense",1745,2202,3444,4360]
["Research and development [Member]"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock-based compensation expense",8977,11306,18541,22114]
["Sales and marketing [Member]"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock-based compensation expense",8902,11071,18478,21382]
["General and administrative [Member]"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock-based compensation expense",3844,4165,7558,8307]
["Restructuring charges [Member]"]
["Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"]
["Stock-based compensation expense",0,0,273,0]

{"sheet":"Equity_Incentive_Plans_and_Ben8","index":51,"n_rows":11,"n_cols":9,"rows_kept":11,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2],[0,3,0,4]]}
["Equity Incentive Plans and Benefit Plans - Additional Information (Detail) (USD $)","3 Months Ended",null,"6 Months Ended"]
[null,"Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014","Feb. 20, 2014","Oct. 09, 2013","Jul. 15, 2013","Jun. 13, 2012"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Stock repurchase program",500000000,null,500000000,{"$nulls":4},100000000]
["Stock repurchase program, additional authorizations",{"$nulls":4},200000000,100000000,100000000]
["Total cumulative repurchase of shares",4181863,4653460,5309470,11017240]
["Total purchase price",80000000,80000000,105000000,193500000]
["Remaining authorized amount under repurchase program",25900000,null,25900000]
["Stock Options [Member]"]
["Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"]
["Options grants in period",0,0,0,0]

{"sheet":"Restructuring_Charges_Details","index":52,"n_rows":69,"n_cols":5,"rows_kept":69,"cut":false,"hidden":false,"merged":[[0,0,2,0],[0,1,0,2],[1,1,2,1],[1,2,2,2],[1,3,2,3]]}
["Restructuring Charges (Details) (USD $)","3 Months Ended",null,"6 Months Ended","1 Months Ended"]
[null,"Jan. 31, 2015","Oct. 31, 2014","Jan. 31, 2015","Aug. 31, 2014"]
[{"$nulls":4},"position"]
["Restructuring Cost and Reserve [Line Items]"]
["Net reduction to the restructuring reserve",500000]
["Restructuring Reserve [Roll Forward]"]
["Balance at beginning of period",3187000,0,0,0]
["Gross charges",286000,6554000,6100000]
["Change in estimate related to first quarter of fiscal 2015",-768000]
["Cash payments",-2102000,-3094000]
["Non-cash charges",null,-273000]
["Balance at end of period",603000,3187000,603000]
["Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Other one-time charges incurred to-date",1500000,null,1500000]
["Other on-time charges incurred during period",1111000,null,1543000]
["Employee Severance and Benefits [Member]"]
["Restructuring Reserve [Roll Forward]"]
["Balance at beginning of period",3187000,0,0,0]
["Gross charges",58000,6203000]
["Change in estimate related to first quarter of fiscal 2015",-768000]
["Cash payments",-1874000,-2743000]
["Non-cash charges",null,-273000]
["Balance at end of period",603000,3187000,603000]
["Other [Member]"]
["Restructuring Reserve [Roll Forward]"]
["Balance at beginning of period",0,0,0,0]
["Gross charges",228000,351000]
["Change in estimate related to first quarter of fiscal 2015",0]
["Cash payments",-228000,-351000]
["Non-cash charges",null,0]
["Balance at end of period",0,0,0]
["Minimum [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Expected restructuring charges",null,null,null,6000000]
["Minimum [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Expected restructuring charges",null,null,null,2300000]
["Maximum [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Expected number of positions eliminated",null,null,null,66]
["Expected number of positions eliminated, percent",null,null,null,3.6999999999999998E-2]
["Expected number of positions relocated",null,null,null,75]
["Expected number of positions relocated, percent",null,null,null,4.2000000000000003E-2]
["Expected restructuring charges",null,null,null,8000000]
["Maximum [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Expected restructuring charges",null,null,null,4300000]
["Unpaid Employee Severance Benefits [Member] | Employee Severance and Benefits [Member]"]
["Restructuring Reserve [Roll Forward]"]
["Change in estimate related to first quarter of fiscal 2015",400000]
["Unused Insurance and Outplacement Costs [Member] | Unused insurance and outplacement costs"]
["Restructuring Reserve [Roll Forward]"]
["Change in estimate related to first quarter of fiscal 2015",300000]
["Third Party Professional Services [Member] | Other [Member]"]
["Restructuring Reserve [Roll Forward]"]
["Gross charges",200000]
["Cost of revenue [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Other on-time charges incurred during period",26000,null,27000]
["Research and development [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Other on-time charges incurred during period",7000,null,7000]
["Sales and marketing [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Other on-time charges incurred during period",286000,null,370000]
["General and administrative [Member] | Other One-time Charges [Member]"]
["Restructuring Cost and Reserve [Line Items]"]
["Other on-time charges incurred during period",792000,null,1139000]

{"sheet":"Segment_Information_and_Signif2","index":53,"n_rows":6,"n_cols":2,"rows_kept":6,"cut":false,"hidden":false,"merged":[[0,0,2,0]]}
["Segment Information and Significant Customers - Additional Information (Detail)","6 Months Ended"]
[null,"Jan. 31, 2015"]
[null,"segment"]
["Segment Reporting [Abstract]"]
["Number of reportable segments",1]
["Number of operating segments",1]

{"sheet":"Segment_Information_and_Signif3","index":54,"n_rows":16,"n_cols":5,"rows_kept":16,"cut":false,"hidden":false,"merged":[[0,1,0,2],[0,3,0,4]]}
["Segment Information and Significant Customers - Schedule of Total Revenue by Geographic Region (Detail) (USD $)","3 Months Ended",null,"6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["Revenue, Major Customer [Line Items]"]
["Revenue",212931,176356,420752,337283]
["United States [Member]"]
["Revenue, Major Customer [Line Items]"]
["Revenue",134931,113890,267696,222205]
["Europe, Middle East and Africa [Member]"]
["Revenue, Major Customer [Line Items]"]
["Revenue",42706,33768,87563,59764]
["Asia Pacific [Member]"]
["Revenue, Major Customer [Line Items]"]
["Revenue",29188,24260,55194,47254]
["Rest of World [Member]"]
["Revenue, Major Customer [Line Items]"]
["Revenue",6106,4438,10299,8060]

{"sheet":"Segment_Information_and_Signif4","index":55,"n_rows":8,"n_cols":5,"rows_kept":8,"cut":false,"hidden":false,"merged":[[0,0,1,0],[0,1,0,2],[0,3,0,4]]}
["Segment Information and Significant Customers - Significant Channel Partners as Percentage of Total Revenues (Detail)","3 Months Ended",null,"6 Months Ended"]
[null,"Jan. 31, 2015","Jan. 31, 2014","Jan. 31, 2015","Jan. 31, 2014"]
["ScanSource, Inc. [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total revenues",0.17399999999999999,0.20300000000000001,0.17499999999999999,0.20799999999999999]
["Synnex Corp. [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total revenues",null,0.109,0.11,0.122]

{"sheet":"Segment_Information_and_Signif5","index":56,"n_rows":13,"n_cols":3,"rows_kept":13,"cut":false,"hidden":false,"merged":[]}
["Segment Information and Significant Customers - Summary of Significant Channel Partners as Percentage of Total Accounts Receivable (Detail)","Jan. 31, 2015","Jul. 31, 2014"]
["ScanSource, Inc. [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total accounts receivable",0.111,0.17199999999999999]
["Synnex Corp. [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total accounts receivable",null,0.11799999999999999]
["Avnet Logistics U.S. LP [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total accounts receivable",0.16600000000000001,0.153]
["Dell, Inc. [Member]"]
["Revenue, Major Customer [Line Items]"]
["Significant channel partners as a percentage of total accounts receivable",null,0.115]

{"sheet":"Segment_Information_and_Signif6","index":57,"n_rows":13,"n_cols":3,"rows_kept":13,"cut":false,"hidden":false,"merged":[[0,1,1,1],[0,2,1,2]]}
["Segment Information and Significant Customers - Schedule of Long-lived Assets by Geographic Region (Details) (USD $)","Jan. 31, 2015","Jul. 31, 2014"]
["In Thousands, unless otherwise specified"]
["Revenues from External Customers and Long-Lived Assets [Line Items]"]
["Long-lived assets",30360,27261]
["United States [Member]"]
["Revenues from External Customers and Long-Lived Assets [Line Items]"]
["Long-lived assets",20217,18242]
["India [Member]"]
["Revenues from External Customers and Long-Lived Assets [Line Items]"]
["Long-lived assets",5907,4894]
["All other countries [Member]"]
["Revenues from External Customers and Long-Lived Assets [Line Items]"]
["Long-lived assets",4236,4125]

{"sheet":"Commitments_and_Contingencies_1","index":58,"n_rows":10,"n_cols":2,"rows_kept":10,"cut":false,"hidden":false,"merged":[[0,1,1,1]]}
["Commitments and Contingencies - Future Minimum Lease Payments Under Non-Cancelable Operating Leases (Detail) (USD $)","Jan. 31, 2015"]
["In Thousands, unless otherwise specified"]
["Commitments and Contingencies Disclosure [Abstract]"]
["2015 (remaining six months)",4366]
[2016,9168]
[2017,4041]
[2018,2210]
[2019,847]
["Thereafter",2381]
["Total",23013]

{"sheet":"Commitments_and_Contingencies_2","index":59,"n_rows":15,"n_cols":6,"rows_kept":15,"cut":false,"hidden":false,"merged":[[0,0,1,0]]}
["Commitments and Contingencies - Additional Information (Detail) (USD $)","0 Months Ended","1 Months Ended"]
[null,"Dec. 24, 2014","Mar. 31, 2011","Jan. 31, 2015","Jul. 31, 2014","Oct. 31, 2014"]
["Long-term Purchase Commitment [Line Items]"]
["Non-cancelable purchase commitments",null,null,48000000,45400000]
["Product cost of revenue [Member]"]
["Long-term Purchase Commitment [Line Items]"]
["Inventory reserve",{"$nulls":4},1000000]
["Indemnification Agreement [Member]"]
["Long-term Purchase Commitment [Line Items]"]
["Liabilities recorded for indemnification agreements",null,null,0,0]
["Azalea Networks China Lawsuit [Member]"]
["Long-term Purchase Commitment [Line Items]"]
["Litigation Settlement, Amount",750000]
["Shares Returned as Reimbursement of Legal Settlement Payment",null,40560]
["Gain (Loss) Related to Litigation Settlement",null,750000]

{"sheet":"Commitments_and_Contingencies_3","index":60,"n_rows":7,"n_cols":3,"rows_kept":7,"cut":false,"hidden":false,"merged":[[0,1,0,2]]}
["Commitments and Contingencies - Changes in Warranty Liability (Detail) (USD $)","6 Months Ended"]
["In Thousands, unless otherwise specified","Jan. 31, 2015","Jan. 31, 2014"]
["Movement in Standard Product Warranty Accrual [Roll Forward]"]
["Beginning Balance",943,777]
["Changes to the provision",657,365]
["Obligations fulfilled during period",-241,-240]
["Ending Balance",1359,902]

{"sheet":"Subsequent_Events_Subsequent_E","index":61,"n_rows":6,"n_cols":2,"rows_kept":6,"cut":false,"hidden":false,"merged":[[0,1,1,1]]}
["Subsequent Events Subsequent Events (Details) (Subsequent Event [Member], USD $)","Mar. 02, 2015"]
["In Millions, except Per Share data, unless otherwise specified"]
["Subsequent Event [Member]"]
["Subsequent Event [Line Items]"]
["Amount to be received for each Company share upon merger (in US$ per share)",24.67]
["Merger Agreement Termination Fee",90]