Infoblox 10-Q 6 Dec 13 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Oct. 31, 2013	Nov. 30, 2013
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'INFOBLOX INC	'
Entity Central Index Key	'0001223862	'
Current Fiscal Year End Date	'--07-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	31-Oct-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	52,970,879

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Oct. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$84,241	$69,828
Short-term investments	144,892	139,508
Accounts receivable, net	39,645	38,728
Inventory	5,296	4,478
Deferred tax assets	1,354	1,354
Prepaid expenses and other current assets	5,331	6,023
Total current assets	280,759	259,919
Property and equipment, net	18,464	18,370
Restricted cash	3,509	3,508
Intangible assets, net	4,913	5,494
Goodwill	32,726	32,726
Other assets	426	443
TOTAL ASSETS	340,797	320,460
CURRENT LIABILITIES:	'	'
Accounts payable and accrued liabilities	13,602	12,387
Accrued compensation	13,609	12,472
Deferred revenue, net	72,336	68,479
Total current liabilities	99,547	93,338
Deferred revenue, net	30,953	29,693
Deferred tax liability	1,055	1,055
Other liabilities	6,632	6,821
TOTAL LIABILITIES	138,187	130,907
Commitments and contingencies (Note 5)	'	'
STOCKHOLDERS' EQUITY:	'	'
Convertible preferred stock, $0.0001 par value per share—5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.0001 par value per share—100,000 shares authorized; 52,883 shares and 51,670 shares issued and outstanding as of October 31, 2013 and July 31, 2013	5	5
Additional paid-in capital	317,685	302,101
Accumulated other comprehensive income (loss)	11	-11
Accumulated deficit	-115,091	-112,542
TOTAL STOCKHOLDERS' EQUITY	202,610	189,553
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$340,797	$320,460

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 31, 2013	Jul. 31, 2013
Statement of Financial Position [Abstract]	'	'
Convertible preferred stock, par value	$0.00	$0.00
Convertible preferred stock, shares authorized	5,000,000	5,000,000
Convertible preferred stock, shares issued	0	0
Convertible preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	52,883,000	51,670,000
Common stock, shares outstanding	52,883,000	51,670,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Net revenue:	'	'
Products and licenses	$35,962	$27,098
Services	27,559	22,407
Total net revenue	63,521	49,505
Cost of revenue:	'	'
Products and licenses	7,887	5,840
Services	5,821	4,249
Total cost of revenue	13,708	10,089
Gross profit	49,813	39,416
Operating expenses:	'	'
Research and development	11,600	10,214
Sales and marketing	33,131	25,631
General and administrative	6,986	5,658
Total operating expenses	51,717	41,503
Loss from operations	-1,904	-2,087
Other expense, net	-101	-106
Loss before provision for income taxes	-2,005	-2,193
Provision for income taxes	544	197
Net loss	($2,549)	($2,390)
Net loss per share - basic and diluted	($0.05)	($0.05)
Weighted-average shares used in computing net loss per share - basic and diluted	52,274	45,990

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Statement of Comprehensive Income [Abstract]	'	'
Net loss	($2,549)	($2,390)
Unrealized holding gain (loss) on short-term investments, net	22	-60
Comprehensive loss	($2,527)	($2,450)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net loss	($2,549)	($2,390)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Stock-based compensation	9,041	4,922
Depreciation and amortization	2,105	1,438
Excess tax benefits from employee stock plans	-441	-154
Amortization of investment premium	144	27
Changes in operating assets and liabilities:	'	'
Accounts receivable, net	-917	907
Inventory	-818	-285
Prepaid expenses, other current assets and other assets	759	-134
Accounts payable and accrued liabilities	1,517	44
Accrued compensation	1,137	2,418
Deferred revenue, net	5,117	1,581
Other liabilities	-189	505
Net cash provided by operating activities	14,906	8,879
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Purchases of short-term investments	-27,067	-88,177
Proceeds from maturities of short-term investments	21,560	0
Purchases of property and equipment	-1,507	-923
Decrease in restricted cash	0	532
Net cash used in investing activities	-7,014	-88,568
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Proceeds from issuance of common stock under the employee stock plans	6,080	3,224
Excess tax benefits from employee stock plans	441	154
Payments of remaining unpaid initial public offering costs	0	-235
Net cash provided by financing activities	6,521	3,143
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	14,413	-76,546
CASH AND CASH EQUIVALENTS—Beginning of period	69,828	156,613
CASH AND CASH EQUIVALENTS—End of period	84,241	80,067
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:	'	'
Purchases of property and equipment not yet paid	203	2,031
Cash paid for income taxes, net	117	256
Change in liability due to vesting of early exercised stock options	$17	$58

Description_of_the_Business_an

Description of the Business and Summary of Significant Accounting Policies	3 Months Ended
	Oct. 31, 2013
Accounting Policies [Abstract]	'
Description of the Business and Summary of Significant Accounting Policies	'
	DESCRIPTION OF THE BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Business
	Infoblox Inc. (together with our subsidiaries, “we,” “us” or “our”) was originally incorporated in the State of Illinois in February 1999 and was reincorporated in the State of Delaware in May 2003. We are headquartered in Santa Clara, California and have subsidiaries and representative offices located throughout the world. We provide a broad family of enterprise and service provider-class solutions to automate management of the critical network infrastructure services needed for secure, scalable and fault-tolerant connections between applications, devices and users.
	Basis of Presentation
	The condensed consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated. The accompanying condensed consolidated balance sheet as of October 31, 2013, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three months ended October 31, 2013 and 2012 are unaudited. The condensed consolidated balance sheet as of July 31, 2013 was derived from the audited consolidated balance sheet as of July 31, 2013. These unaudited condensed consolidated financial statements and accompanying notes should be read together with the audited consolidated financial statements in Item 8 of our Annual Report on Form 10-K for the fiscal year ended July 31, 2013.
	The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, pursuant to the rules and regulations of the Securities Exchange Commission, or SEC. They do not include all of the financial information and footnotes required by GAAP for complete financial statements. We believe the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2013, and our results of operations, comprehensive loss and cash flows for the three months ended October 31, 2013 and 2012. All adjustments are of a normal recurring nature. The results for the three months ended October 31, 2013 are not necessarily indicative of the results to be expected for any subsequent quarter or for the year ending July 31, 2014.
	Significant Accounting Policies
	We describe our significant accounting policies in Note 1 to the consolidated financial statements in Item 8 of our Annual Report on Form 10-K for the fiscal year ended July 31, 2013. There have been no significant changes in our accounting policies during the three months ended October 31, 2013, as compared to the significant accounting policies described in our Annual Report on Form 10-K for the year ended July 31, 2013.
	Use of Estimates
	The preparation of the accompanying condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Those management estimates and assumptions affect revenue recognition, allowances for doubtful accounts and sales returns, valuation of our cash equivalents and available-for-sale investments, valuation of inventory, determination of fair value of stock-based awards, valuation of goodwill and intangible assets acquired, impairment of goodwill and other intangible assets, amortization of intangible assets, contingencies and litigation and accounting for income taxes, including the valuation reserve on deferred tax assets and uncertain tax positions. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors and adjust those estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ from these estimates and assumptions, and those differences could be material to the condensed consolidated financial statements.
	Concentrations of Risk
	Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, short-term investments, restricted cash and accounts receivable. Our cash, cash equivalents, short-term investments and restricted cash are invested in high-credit quality financial instruments with banks and financial institutions. Such deposits may be in excess of insured limits provided on such deposits.
	We mitigate credit risk in respect to accounts receivable by performing ongoing credit evaluations of our customers and maintaining a reserve for potential credit losses. In addition, we generally require our customers to prepay for maintenance and support services to mitigate the risk of uncollectible accounts receivable.
	Significant customers are those which represent more than 10% of our total net revenue or gross accounts receivable balance at each respective balance sheet date. For the three months ended October 31, 2013 and 2012, no customer represented more than 10% of our total net revenue. As of October 31, 2013, SLAIT Consulting, LLC, a reseller, accounted for 10.6% of our total gross accounts receivable. As of July 31, 2013, Exclusive Networks Ltd., a distributor, accounted for 11.2% of our total gross accounts receivable. We believe it is unlikely that the loss of any of our channel partners would have a long term material adverse effect on our total net revenue as we believe end-users would likely purchase our products from a different channel partner. However, a loss of any one of these channel partners could have a material adverse impact during the transition period.
	Recently Issued Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (“ASU 2013-11”). ASU 2013-11 provides guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, similar tax loss, or tax credit carryforward exists. This new standard requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. We adopted ASU 2013-11 during the three months ended October 31, 2013 and the adoption did not have any impact on our financial position or results of operations.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	3 Months Ended
	Oct. 31, 2013
Earnings Per Share [Abstract]	'
Net Income (Loss) Per Share	'
	NET INCOME (LOSS) PER SHARE
	We compute basic net income (loss) per share using the weighted average number of common shares outstanding during the period. We compute diluted net income per share using the weighted average number of common shares and dilutive potential common shares outstanding during the period. Dilutive potential common shares include shares issuable upon the exercise of stock options and upon the vesting of restricted stock units, or RSUs, under the treasury stock method.
	In loss periods, basic net loss per share and diluted net loss per share are the same since the effect of potential common shares is anti-dilutive and therefore excluded.
	The following outstanding weighted-average shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:
			Three Months Ended October 31,
			2013	2012
		(In thousands)
	Stock options to purchase common stock		4,353	7,357
	Restricted stock units		1,533	61
	Employee Stock Purchase Plan		327	37

Cash_Equivalents_ShortTerm_Inv

Cash Equivalents, Short-Term Investments, Restricted Cash and Fair Value Measurements	3 Months Ended
	Oct. 31, 2013
Financial Instruments, Owned, at Fair Value [Abstract]	'
Cash Equivalents, Short-term Investments, Restricted Cash and Fair Value Measurements	'
	CASH EQUIVALENTS, SHORT-TERM INVESTMENTS, RESTRICTED CASH AND FAIR VALUE MEASUREMENTS
	Cash Equivalents, Short-term Investments and Restricted Cash
	The following table summarizes our cash equivalents, short-term investments and restricted cash as of October 31, 2013:
		Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
		(In thousands)
	Cash equivalents:
	Money market funds	$	5,825	$	—	$	—		$	5,825
	Short-term investments:
	U.S. Treasury securities	102,522		21		(12		)	102,531
	U.S. government agency securities	28,280		15		—			28,295
	FDIC-backed certificates of deposit	14,081		7		(22		)	14,066
	Total short-term investments	144,883		43		(34		)	144,892
	Restricted cash:
	U.S. Treasury securities	3,406		2		—			3,408
	Total cash equivalents, short-term investments and restricted cash	$	154,114	$	45	$	(34	)	$	154,125
	The following table presents the contractual maturities of our short-term investments which are classified as available-for-sale securities as of October 31, 2013:
		Amortized Cost		Estimated Fair Value
		(In thousands)
	Due within one year	$	77,715	$	77,726
	Due after one year through two years	67,168		67,166
	Total	$	144,883	$	144,892
	We classify our available-for-sale investments as short-term investments in our condensed consolidated balance sheet based on management's intention to have the funds available for use in operations or strategic investments rather than actual maturity dates.
	The following table summarizes our cash equivalents, short-term investments and restricted cash as of July 31, 2013:
		Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
		(In thousands)
	Cash equivalents:
	Money market funds	$	11,133	$	—	$	—		$	11,133
	Short-term investments:
	U.S. Treasury securities	99,754		12		(28		)	99,738
	U.S. government agency securities	29,525		13		(4		)	29,534
	FDIC-backed certificates of deposit	10,240		6		(10		)	10,236
	Total short-term investments	139,519		31		(42		)	139,508
	Restricted cash:
	U.S. Treasury securities	3,407		—		—			3,407
	Total cash equivalents, short-term investments and restricted cash	$	154,059	$	31	$	(42	)	$	154,048
	Fair Value Measurements
	The following table sets forth the fair value of our financial assets by level within the fair value hierarchy:
		Fair Value Measurements at October 31, 2013 Using:
		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
		(Level I)		(Level II)		(Level III)			Total
		(In thousands)
	Financial Assets
	Cash equivalents:
	Money market funds	$	5,825	$	—	$	—		$	5,825
	Short-term investments:
	U.S. Treasury securities	102,531		—		—			102,531
	U.S. government agency securities	—		28,295		—			28,295
	FDIC-backed certificates of deposit	—		14,066		—			14,066
	Total short-term investments	102,531		42,361		—			144,892
	Restricted cash:
	U.S. Treasury securities	3,408		—		—			3,408
	Total financial assets	$	111,764	$	42,361	$	—		$	154,125
		Fair Value Measurements at July 31, 2013 Using:
		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
		(Level I)		(Level II)		(Level III)			Total
		(In thousands)
	Financial Assets
	Cash equivalents:
	Money market funds	$	11,133	$	—	$	—		$	11,133
	Short-term investments:
	U.S. Treasury securities	99,738		—		—			99,738
	U.S. government agency securities	—		29,534		—			29,534
	FDIC-backed certificates of deposit	—		10,236		—			10,236
Total short-term investments	99,738		39,770		—			139,508
Restricted cash:
U.S. Treasury securities	3,407		—		—			3,407
Total financial assets	$	114,278	$	39,770	$	—		$	154,048
We value our Level I assets, consisting of money market funds and U.S. Treasury securities, using quoted prices in active markets for identical instruments. Financial assets whose fair values we measure on a recurring basis using Level II inputs consist of U.S. government agency securities and Federal Deposit Insurance Corporation, or FDIC-backed certificates of deposit. We measure the fair values of these assets with the help of a pricing service that either provides quoted market prices in active markets for identical or similar securities or uses observable inputs for their pricing without applying significant adjustments because the inputs used in the valuation model, such as interest rates and volatility, can be corroborated by readily observable market data for substantially the full term of the financial assets.
There were no transfers between Level I, Level II and Level III fair value hierarchies during the three months ended October 31, 2013.

Inventory_and_Deferred_Revenue

Inventory and Deferred Revenue	3 Months Ended
	Oct. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Inventory and Deferred Revenue	'
	INVENTORY AND DEFERRED REVENUE
	Inventory
	Inventory consists of the following:
		October 31, 2013		July 31, 2013
		(In thousands)
	Raw materials	$	573	$	412
	Finished goods	4,723		4,066
	Total inventory	$	5,296	$	4,478
	Deferred Revenue, Net
	Deferred revenue, net consists of the following:
		October 31, 2013		July 31, 2013
		(In thousands)
	Deferred revenue:
	Products and licenses	$	7,654	$	7,791
	Services	97,016		91,453
	Total deferred revenue	104,670		99,244
	Deferred cost of revenue:
	Products and licenses	868		871
	Services	513		201
	Total deferred cost of revenue	1,381		1,072
	Total deferred revenue, net	103,289		98,172
	Less current portion	72,336		68,479
	Noncurrent portion	$	30,953	$	29,693

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Oct. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	Contract Manufacturer Commitments
	The independent contract manufacturers that provide substantially all of our manufacturing, repair and supply chain operations procures components and builds our products based on our forecasts. These forecasts are based on estimates of future demand for our products, which are in turn based on historical trends and an analysis from our sales and marketing organizations, adjusted for overall market conditions. In order to reduce manufacturing lead times and plan for adequate component supply, we may issue purchase orders to these independent contract manufacturers that may not be cancellable. As of October 31, 2013 and July 31, 2013, we had $3.0 million and $2.6 million of open purchase orders that may not be cancellable with these independent contract manufacturers.
	Guarantees
	We have entered into agreements with some of our customers that contain indemnification provisions relating to potential situations where claims could be alleged that our products infringe the intellectual property rights of a third party. We have, at our option and expense, the ability to repair any infringement, replace the product with a non-infringing functionally equivalent product, or refund our customers the unamortized value of the product based on its estimated useful life, typically five years. Other guarantees or indemnification arrangements include guarantees of product and service performance and standby letters of credit for lease facilities and corporate credit cards. We have not recorded a liability related to these indemnification and guarantee provisions, and our guarantees and indemnification arrangements have not had any significant impact on our condensed consolidated financial statements to date.
	Loss Contingencies and Legal Proceedings
	We are subject to the possibility of various loss contingencies arising in the ordinary course of business. An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred and the range of loss can be reasonably estimated. However, the actual loss in any such contingency may be materially different from our estimates, which could result in the need to record additional expenses. If the amount of liability is not probable or the amount cannot be reasonably estimated, no accruals have been made. We regularly evaluate current information available to management to determine whether such accruals should be adjusted and whether new accruals are required in the periods presented.
	From time to time, we are subject to various legal proceedings, claims and litigation arising in the ordinary course of business. We do not believe we are party to any currently pending legal proceedings the outcome of which would have a material adverse effect on our financial position, results of operations or cash flows. There can be no assurance that existing or future legal proceedings arising in the ordinary course of business or otherwise will not have a material adverse effect on our financial position, results of operations or cash flows.
	On April 16, 2013, Versata Software, Inc., or Versata, filed suit against us in the United States District Court for the District of Delaware in an action captioned Versata Software, Inc. F/K/A Trilogy Software, Inc.; and Versata Development Group, Inc. F/K/A Trilogy Development Group, Inc. v. Infoblox, Inc., Case No 1:13-cv-00678-UNA (D.Del.) (the “Action”).  In the Action, Versata alleges that we directly and/or indirectly infringed U.S. Patent Nos. 6,834,282; 6,907,414; 7,363,593 and 7,426,481 by making, using, licensing, selling and offering for sale software products and related services including but not limited to Infoblox IP Address Management. We continue to believe we have meritorious defenses to the claims asserted in these actions and intend to defend vigorously against them. We believe at this time that liabilities associated with these cases, while possible, are not probable, and therefore we have not recorded any accrual for them as of October 31, 2013. Further, any possible range of loss cannot be reasonably estimated at this time.

Stockholders_Equity_and_Employ

Stockholders’ Equity and Employee Benefit Plans	3 Months Ended
	Oct. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stockholders' Equity and Employee Benefit Plans	'
	STOCKHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS
	Stock-based Compensation
	The following table summarizes stock-based compensation expense for stock option grants, employee stock purchase plan, or ESPP, purchase rights and restricted stock units recorded in our condensed consolidated statements of operations:
			Three Months Ended October 31,
			2013				2012
			(In thousands)
	Cost of revenue		$	704			$	428
	Research and development		1,672				1,212
	Sales and marketing		5,192				2,484
	General and administrative		1,473				798
			$	9,041			$	4,922
	The following table summarizes stock-based compensation expense by award type:
			Three Months Ended October 31,
			2013				2012
		(In thousands)
	RSUs		$	4,771			$	594
	Stock options		3,068				2,141
	ESPP		1,202				2,187
			$	9,041			$	4,922
	The following table summarizes the unrecognized stock-based compensation balance, net of estimated forfeitures, by type of awards as of October 31, 2013:
			As of October 31, 2013				Weighted-Average Amortization Period
			(In thousands)				(In years)
	RSUs		$	61,594			3.29
	Stock options		20,376				2.24
	ESPP		2,114				0.78
	Total unrecognized stock-based compensation balance		$	84,084			2.97
	Determination of Fair Value
	The fair value of stock option grants was estimated at the date of grant using the following assumptions:
			Three Months Ended October 31,
			2013				2012
	Expected term (in years)		6.08				6.08
	Risk-free interest rate		1.83		%		0.9		%
	Expected volatility		54		%		53		%
	Dividend rate		—		%		—		%
	Weighted average fair value per share		$	21.98			$	10.12
	Stock Option Activity
	A summary of the stock option activity under our stock plans during the three months ended October 31, 2013 is presented below:
			Number of			Weighted-				Weighted-	Aggregate Intrinsic Value
			Shares			Average				Average
			Underlying			Exercise Price				Remaining
			Outstanding							Contractual
			Options							Term
			(In thousands)							(In years)	(In thousands)
	Outstanding as of July 31, 2013		6,663			$	9.35			7.47	$	155,580
	Options granted		239			$	42.1
	Options exercised		(1,008	)		$	6.08
	Options canceled due to forfeitures		(24	)		$	14.12
	Outstanding as of October 31, 2013		5,870			$	11.23			7.46	$	195,013
	Vested and expected to vest as of October 31, 2013		5,594			$	10.86			7.4	$	187,918
	Vested and exercisable as of October 31, 2013		2,614			$	6.8			6.48	$	98,438
	Restricted Stock Unit Activity
	A summary of the restricted stock unit activity during the three months ended October 31, 2013 is presented below:
			Number of Units			Weighted-Average Grant Date Fair Value Per Share
			(In thousands)
	Outstanding as of July 31, 2013		1,986			$	21.15
	Granted		1,053			$	42.56
	Vested		(205	)		$	20.74
	Cancellations due to forfeitures		(31	)		$	30.37
	Outstanding as of October 31, 2013		2,803			$	29.38

Income_Taxes

Income Taxes	3 Months Ended
	Oct. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	The provision for income taxes for the three months ended October 31, 2013 and 2012 was $0.5 million and $0.2 million. The provision for income taxes for the three months ended October 31, 2013 consists primarily of federal and state income taxes. The income tax provision for the three months ended October 31, 2012 consists primarily of state and foreign income taxes. The increase in the provision for income taxes for the three months ended October 31, 2013 compared to the same period in the prior year was principally attributable to $0.3 million of federal income tax provision due to limitations on our ability to utilize certain net operating loss carry forwards.
	For the three months ended October 31, 2013 and 2012, our provisions for income taxes differed from the statutory amount primarily due to U.S. and foreign taxes currently payable, and we realized no benefit for current year losses due to maintaining a full valuation allowance against the U.S. net deferred tax assets.
	The realization of tax benefits of deferred tax assets is dependent upon future levels of taxable income, of an appropriate character, in the periods the items are expected to be deductible or taxable. Based on the available objective evidence, management does not believe it is more likely than not that the domestic net deferred tax assets will be realizable. Accordingly, we have provided a full valuation allowance against our domestic net deferred tax assets as of October 31, 2013 and July 31, 2013. We intend to maintain the valuation allowance until sufficient positive evidence exists to support a reversal of, or decrease in, the valuation allowance. During the three months ended October 31, 2013, there have been no material changes to the total amount of unrecognized tax benefits.

Segment_Information

Segment Information	3 Months Ended
	Oct. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	SEGMENT INFORMATION
	We operate in one single segment. The following table represents net revenue based on the customer’s location, as determined by the customer’s shipping address:
		Three Months Ended October 31,
		2013		2012
		(In thousands)
	Americas	$	43,303	$	32,643
	Europe, Middle East and Africa ("EMEA")	13,978		11,703
	Asia Pacific ("APAC")	6,240		5,159
	Total net revenue	$	63,521	$	49,505
	Included within the Americas total in the above table is revenue from sales in the U.S. of $40.4 million and $31.0 million for the three months ended October 31, 2013 and 2012. Aside from the U.S., no other country comprised more than 10% of our net revenue for the three months ended October 31, 2013 and 2012.
	Our property and equipment, net by location is summarized as follows:
		October 31,		July 31,
		2013		2013
		(In thousands)
	Americas	$	17,988	$	17,997
	APAC	283		224
	EMEA	193		149
	Total property and equipment, net	$	18,464	$	18,370
	Included within the Americas total in the above table is property and equipment, net in the U.S. of $18.0 million and $18.0 million as of October 31, 2013 and July 31, 2013.

Description_of_the_Business_an1

Description of the Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Oct. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The condensed consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated. The accompanying condensed consolidated balance sheet as of October 31, 2013, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three months ended October 31, 2013 and 2012 are unaudited. The condensed consolidated balance sheet as of July 31, 2013 was derived from the audited consolidated balance sheet as of July 31, 2013. These unaudited condensed consolidated financial statements and accompanying notes should be read together with the audited consolidated financial statements in Item 8 of our Annual Report on Form 10-K for the fiscal year ended July 31, 2013.
	The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, pursuant to the rules and regulations of the Securities Exchange Commission, or SEC. They do not include all of the financial information and footnotes required by GAAP for complete financial statements. We believe the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2013, and our results of operations, comprehensive loss and cash flows for the three months ended October 31, 2013 and 2012. All adjustments are of a normal recurring nature. The results for the three months ended October 31, 2013 are not necessarily indicative of the results to be expected for any subsequent quarter or for the year ending July 31, 2014.
Use of Estimates	'
	Use of Estimates
	The preparation of the accompanying condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Those management estimates and assumptions affect revenue recognition, allowances for doubtful accounts and sales returns, valuation of our cash equivalents and available-for-sale investments, valuation of inventory, determination of fair value of stock-based awards, valuation of goodwill and intangible assets acquired, impairment of goodwill and other intangible assets, amortization of intangible assets, contingencies and litigation and accounting for income taxes, including the valuation reserve on deferred tax assets and uncertain tax positions. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors and adjust those estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ from these estimates and assumptions, and those differences could be material to the condensed consolidated financial statements.
Concentrations of Risk	'
	Concentrations of Risk
	Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, short-term investments, restricted cash and accounts receivable. Our cash, cash equivalents, short-term investments and restricted cash are invested in high-credit quality financial instruments with banks and financial institutions. Such deposits may be in excess of insured limits provided on such deposits.
	We mitigate credit risk in respect to accounts receivable by performing ongoing credit evaluations of our customers and maintaining a reserve for potential credit losses. In addition, we generally require our customers to prepay for maintenance and support services to mitigate the risk of uncollectible accounts receivable.
	Significant customers are those which represent more than 10% of our total net revenue or gross accounts receivable balance at each respective balance sheet date. For the three months ended October 31, 2013 and 2012, no customer represented more than 10% of our total net revenue. As of October 31, 2013, SLAIT Consulting, LLC, a reseller, accounted for 10.6% of our total gross accounts receivable. As of July 31, 2013, Exclusive Networks Ltd., a distributor, accounted for 11.2% of our total gross accounts receivable. We believe it is unlikely that the loss of any of our channel partners would have a long term material adverse effect on our total net revenue as we believe end-users would likely purchase our products from a different channel partner. However, a loss of any one of these channel partners could have a material adverse impact during the transition period.
Recently Issued Accounting Pronouncements	'
	Recently Issued Accounting Pronouncements
	In July 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (“ASU 2013-11”). ASU 2013-11 provides guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, similar tax loss, or tax credit carryforward exists. This new standard requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. We adopted ASU 2013-11 during the three months ended October 31, 2013 and the adoption did not have any impact on our financial position or results of operations.

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	3 Months Ended
	Oct. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	'
	The following outstanding weighted-average shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:
			Three Months Ended October 31,
			2013	2012
		(In thousands)
	Stock options to purchase common stock		4,353	7,357
	Restricted stock units		1,533	61
	Employee Stock Purchase Plan		327	37

Cash_Equivalents_ShortTerm_Inv1

Cash Equivalents, Short-Term Investments, Restricted Cash and Fair Value Measurements (Tables)	3 Months Ended
	Oct. 31, 2013
Financial Instruments, Owned, at Fair Value [Abstract]	'
Schedule Cash Equivalents, Short-term Investments and Restricted Cash	'
	The following table summarizes our cash equivalents, short-term investments and restricted cash as of July 31, 2013:
		Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
		(In thousands)
	Cash equivalents:
	Money market funds	$	11,133	$	—	$	—		$	11,133
	Short-term investments:
	U.S. Treasury securities	99,754		12		(28		)	99,738
	U.S. government agency securities	29,525		13		(4		)	29,534
	FDIC-backed certificates of deposit	10,240		6		(10		)	10,236
	Total short-term investments	139,519		31		(42		)	139,508
	Restricted cash:
	U.S. Treasury securities	3,407		—		—			3,407
	Total cash equivalents, short-term investments and restricted cash	$	154,059	$	31	$	(42	)	$	154,048
	The following table summarizes our cash equivalents, short-term investments and restricted cash as of October 31, 2013:
		Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
		(In thousands)
	Cash equivalents:
	Money market funds	$	5,825	$	—	$	—		$	5,825
	Short-term investments:
	U.S. Treasury securities	102,522		21		(12		)	102,531
	U.S. government agency securities	28,280		15		—			28,295
	FDIC-backed certificates of deposit	14,081		7		(22		)	14,066
	Total short-term investments	144,883		43		(34		)	144,892
	Restricted cash:
	U.S. Treasury securities	3,406		2		—			3,408
	Total cash equivalents, short-term investments and restricted cash	$	154,114	$	45	$	(34	)	$	154,125
Investments Classified by Contractual Maturity Date	'
	The following table presents the contractual maturities of our short-term investments which are classified as available-for-sale securities as of October 31, 2013:
		Amortized Cost		Estimated Fair Value
		(In thousands)
	Due within one year	$	77,715	$	77,726
	Due after one year through two years	67,168		67,166
	Total	$	144,883	$	144,892
Schedule of Fair Value of Assets and Liabilities by Level	'
	The following table sets forth the fair value of our financial assets by level within the fair value hierarchy:
		Fair Value Measurements at October 31, 2013 Using:
		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
		(Level I)		(Level II)		(Level III)			Total
		(In thousands)
	Financial Assets
	Cash equivalents:
	Money market funds	$	5,825	$	—	$	—		$	5,825
	Short-term investments:
	U.S. Treasury securities	102,531		—		—			102,531
	U.S. government agency securities	—		28,295		—			28,295
	FDIC-backed certificates of deposit	—		14,066		—			14,066
	Total short-term investments	102,531		42,361		—			144,892
	Restricted cash:
	U.S. Treasury securities	3,408		—		—			3,408
	Total financial assets	$	111,764	$	42,361	$	—		$	154,125
		Fair Value Measurements at July 31, 2013 Using:
		Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs		Significant Other Unobservable Remaining Inputs
		(Level I)		(Level II)		(Level III)			Total
		(In thousands)
	Financial Assets
	Cash equivalents:
	Money market funds	$	11,133	$	—	$	—		$	11,133
	Short-term investments:
	U.S. Treasury securities	99,738		—		—			99,738
	U.S. government agency securities	—		29,534		—			29,534
	FDIC-backed certificates of deposit	—		10,236		—			10,236
	Total short-term investments	99,738		39,770		—			139,508
	Restricted cash:
	U.S. Treasury securities	3,407		—		—			3,407
	Total financial assets	$	114,278	$	39,770	$	—		$	154,048

Inventory_and_Deferred_Revenue1

Inventory and Deferred Revenue (Tables)	3 Months Ended
	Oct. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Inventory	'
	Inventory consists of the following:
		October 31, 2013		July 31, 2013
		(In thousands)
	Raw materials	$	573	$	412
	Finished goods	4,723		4,066
	Total inventory	$	5,296	$	4,478
Schedule of Deferred Revenue, Net	'
	Deferred revenue, net consists of the following:
		October 31, 2013		July 31, 2013
		(In thousands)
	Deferred revenue:
	Products and licenses	$	7,654	$	7,791
	Services	97,016		91,453
	Total deferred revenue	104,670		99,244
	Deferred cost of revenue:
	Products and licenses	868		871
	Services	513		201
	Total deferred cost of revenue	1,381		1,072
	Total deferred revenue, net	103,289		98,172
	Less current portion	72,336		68,479
	Noncurrent portion	$	30,953	$	29,693

Stockholders_Equity_and_Employ1

Stockholders’ Equity and Employee Benefit Plans (Tables)	3 Months Ended
	Oct. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Stock-based Compensation by Statement of Operations	'
	The following table summarizes stock-based compensation expense for stock option grants, employee stock purchase plan, or ESPP, purchase rights and restricted stock units recorded in our condensed consolidated statements of operations:
			Three Months Ended October 31,
			2013				2012
			(In thousands)
	Cost of revenue		$	704			$	428
	Research and development		1,672				1,212
	Sales and marketing		5,192				2,484
	General and administrative		1,473				798
			$	9,041			$	4,922
	The following table summarizes stock-based compensation expense by award type:
			Three Months Ended October 31,
			2013				2012
		(In thousands)
	RSUs		$	4,771			$	594
	Stock options		3,068				2,141
	ESPP		1,202				2,187
			$	9,041			$	4,922
Schedule of Unrecognized Stock-Based Compensation Balance	'
	The following table summarizes the unrecognized stock-based compensation balance, net of estimated forfeitures, by type of awards as of October 31, 2013:
			As of October 31, 2013				Weighted-Average Amortization Period
			(In thousands)				(In years)
	RSUs		$	61,594			3.29
	Stock options		20,376				2.24
	ESPP		2,114				0.78
	Total unrecognized stock-based compensation balance		$	84,084			2.97
Schedule of Determination of Fair Value	'
	The fair value of stock option grants was estimated at the date of grant using the following assumptions:
			Three Months Ended October 31,
			2013				2012
	Expected term (in years)		6.08				6.08
	Risk-free interest rate		1.83		%		0.9		%
	Expected volatility		54		%		53		%
	Dividend rate		—		%		—		%
	Weighted average fair value per share		$	21.98			$	10.12
Schedule of Stock-Based Compensation Activity	'
	A summary of the stock option activity under our stock plans during the three months ended October 31, 2013 is presented below:
			Number of			Weighted-				Weighted-	Aggregate Intrinsic Value
			Shares			Average				Average
			Underlying			Exercise Price				Remaining
			Outstanding							Contractual
			Options							Term
			(In thousands)							(In years)	(In thousands)
	Outstanding as of July 31, 2013		6,663			$	9.35			7.47	$	155,580
	Options granted		239			$	42.1
	Options exercised		(1,008	)		$	6.08
	Options canceled due to forfeitures		(24	)		$	14.12
	Outstanding as of October 31, 2013		5,870			$	11.23			7.46	$	195,013
	Vested and expected to vest as of October 31, 2013		5,594			$	10.86			7.4	$	187,918
	Vested and exercisable as of October 31, 2013		2,614			$	6.8			6.48	$	98,438
Schedule of Restricted Stock Units Award Activity	'
	A summary of the restricted stock unit activity during the three months ended October 31, 2013 is presented below:
			Number of Units			Weighted-Average Grant Date Fair Value Per Share
			(In thousands)
	Outstanding as of July 31, 2013		1,986			$	21.15
	Granted		1,053			$	42.56
	Vested		(205	)		$	20.74
	Cancellations due to forfeitures		(31	)		$	30.37
	Outstanding as of October 31, 2013		2,803			$	29.38

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Oct. 31, 2013
Segment Reporting [Abstract]	'
Revenue from External Customers by Geographic Areas	'
	We operate in one single segment. The following table represents net revenue based on the customer’s location, as determined by the customer’s shipping address:
		Three Months Ended October 31,
		2013		2012
		(In thousands)
	Americas	$	43,303	$	32,643
	Europe, Middle East and Africa ("EMEA")	13,978		11,703
	Asia Pacific ("APAC")	6,240		5,159
	Total net revenue	$	63,521	$	49,505
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	'
	Our property and equipment, net by location is summarized as follows:
		October 31,		July 31,
		2013		2013
		(In thousands)
	Americas	$	17,988	$	17,997
	APAC	283		224
	EMEA	193		149
	Total property and equipment, net	$	18,464	$	18,370

Description_of_the_Business_an2

Description of the Business and Summary of Significant Accounting Policies (Details)	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2013
	customer	Exclusive Networks [Member]	Intelligent Decisions [Member]
		Accounts Receivable [Member]	Accounts Receivable [Member]
Organization [Line Items]	'	'	'
Number of major customers	0	'	'
Concentration risk percentage	'	11.20%	10.60%

Net_Income_Loss_Per_Share_Deta

Net Income (Loss) Per Share (Details)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Stock Option [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Antidilutive securities excluded from computation of earnings per share	4,353	7,357
Restricted Stock Units (RSUs) [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Antidilutive securities excluded from computation of earnings per share	1,533	61
Employee Stock Purchase Plan [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Antidilutive securities excluded from computation of earnings per share	327	37

Cash_Equivalents_ShortTerm_Inv2

Cash Equivalents, Short-Term Investments, Restricted Cash and Fair Value Measurements (Available-for-sale Securities) (Details) (USD $)	Oct. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified
Short-term investments [Abstract]	'	'
Short-term investments, Amortized Cost	$144,883	$139,519
Available-for-sale Securities, Gross Unrealized Gain	43	31
Available-for-sale Securities, Gross Unrealized Loss	-34	-42
Short-term investments, Estimated Fair Value	144,892	139,508
Restricted Cash [Abstract]	'	'
Total cash equivalents and short-term investments, Amortized Cost	154,114	154,059
Total cash equivalents and short-term investments, Unrealized Gains	45	31
Total cash equivalents and short-term investments, Unrealized Losses	-34	-42
Total cash equivalents and short-term investments, Estimated Fair Value	154,125	154,048
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]	'	'
Amortized cost, Due within one year	77,715	'
Amortized cost, Due between one to two years	67,168	'
Amortized cost, Total	144,883	'
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract]	'	'
Estimated Fair Value, Due within one year	77,726	'
Estimated Fair Value, Due between one to two years	67,166	'
Estimated Fair Value, Total	144,892	'
US Treasury Securities [Member]	'	'
Short-term investments [Abstract]	'	'
Short-term investments, Amortized Cost	102,522	99,754
Available-for-sale Securities, Gross Unrealized Gain	21	12
Available-for-sale Securities, Gross Unrealized Loss	-12	-28
Short-term investments, Estimated Fair Value	102,531	99,738
Restricted Cash [Abstract]	'	'
Restricted cash, Amortized Costs Basis	3,406	3,407
Restricted cash, Gross Unrealized Gains	2	0
Restricted cash, Gross Unrealized Losses	0	0
Restricted cash, Fair Value Disclosure	3,408	3,407
US Government Agencies Securities [Member]	'	'
Short-term investments [Abstract]	'	'
Short-term investments, Amortized Cost	28,280	29,525
Available-for-sale Securities, Gross Unrealized Gain	15	13
Available-for-sale Securities, Gross Unrealized Loss	0	-4
Short-term investments, Estimated Fair Value	28,295	29,534
FDIC-backed certificates of deposit [Member]	'	'
Short-term investments [Abstract]	'	'
Short-term investments, Amortized Cost	14,081	10,240
Available-for-sale Securities, Gross Unrealized Gain	7	6
Available-for-sale Securities, Gross Unrealized Loss	-22	-10
Short-term investments, Estimated Fair Value	14,066	10,236
Money Market Funds [Member]	'	'
Cash equivalents [Abstract]	'	'
Cash equivalents, Amortized Cost	5,825	11,133
Cash equivalents, Unrealized Gains	0	0
Cash equivalents, Unrealized Losses	0	0
Cash equivalents, Estimated Fair Value	$5,825	$11,133

Cash_Equivalents_ShortTerm_Inv3

Cash Equivalents, Short-Term Investments, Restricted Cash and Fair Value Measurements (Schedule of the Fair Value of Assets and Liabilities by Level) (Details) (USD $)	Oct. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	$144,892	$139,508
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	102,531	99,738
Total financial assets	111,764	114,278
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	42,361	39,770
Total financial assets	42,361	39,770
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
Total financial assets	0	0
Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	144,892	139,508
Total financial assets	154,125	154,048
US Treasury Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	102,531	99,738
Restricted cash	3,408	3,407
US Treasury Securities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	102,531	99,738
Restricted cash	3,408	3,407
US Treasury Securities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
US Treasury Securities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
US Treasury Securities [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	102,531	99,738
Restricted cash	3,408	3,407
US Government Agencies Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	28,295	29,534
US Government Agencies Securities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
US Government Agencies Securities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	28,295	29,534
US Government Agencies Securities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
US Government Agencies Securities [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	28,295	29,534
FDIC-backed certificates of deposit [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	14,066	10,236
FDIC-backed certificates of deposit [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
FDIC-backed certificates of deposit [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	14,066	10,236
FDIC-backed certificates of deposit [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	0	0
FDIC-backed certificates of deposit [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Short-term investments	14,066	10,236
Money Market Funds [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and Cash Equivalents	5,825	11,133
Money Market Funds [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and Cash Equivalents	0	0
Money Market Funds [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and Cash Equivalents	0	0
Money Market Funds [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and Cash Equivalents	$5,825	$11,133

Inventory_and_Deferred_Revenue2

Inventory and Deferred Revenue (Schedule of Inventory) (Details) (USD $)	Oct. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Raw materials	$573	$412
Finished goods	4,723	4,066
Total Inventory	$5,296	$4,478

Inventory_and_Deferred_Revenue3

Inventory and Deferred Revenue (Schedule of Deferred Revenue) (Details) (USD $)	Oct. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	$104,670	$99,244
Deferred cost of revenue	1,381	1,072
Total deferred revenue, net	103,289	98,172
Less current portion	72,336	68,479
Total deferred income taxes and other tax liabilities	30,953	29,693
Products and Licenses [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	7,654	7,791
Deferred cost of revenue	868	871
Services [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	97,016	91,453
Deferred cost of revenue	$513	$201

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013
Guarantor Obligations [Line Items]	'	'
Open purchase orders	$3	$2.60
Indemnification Agreement [Member]	'	'
Guarantor Obligations [Line Items]	'	'
Term of guarantee	'5 years	'

Stockholders_Equity_and_Employ2

Stockholders’ Equity and Employee Benefit Plans (Stock-based Compensation) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	$9,041	$4,922
Total unrecognized stock-based compensation balance	84,084	'
Total unrecognized stock-based compensation balance, Weighted-average amortization	'2 years 11 months 19 days	'
Restricted Stock Units (RSUs) [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	4,771	594
Total unrecognized stock-based compensation balance	61,594	'
Total unrecognized stock-based compensation balance, Weighted-average amortization	'3 years 3 months 14 days	'
Stock Option [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	3,068	2,141
Total unrecognized stock-based compensation balance	20,376	'
Total unrecognized stock-based compensation balance, Weighted-average amortization	'2 years 2 months 26 days	'
Employee Stock Purchase Plan [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	1,202	2,187
Total unrecognized stock-based compensation balance	2,114	'
Total unrecognized stock-based compensation balance, Weighted-average amortization	'9 months 10 days	'
Cost of Revenue [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	704	428
Research and Development [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	1,672	1,212
Selling and Marketing [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	5,192	2,484
General and Administrative Expense [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Total stock-based compensation expense	$1,473	$798

Stockholders_Equity_and_Employ3

Stockholders’ Equity and Employee Benefit Plans (Determination of Fair Value) (Details) (Stock Option [Member], USD $)	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Stock Option [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term (in years)	'6 years 0 months 29 days	'6 years 0 months 29 days
Risk-free interest rate	1.83%	0.90%
Expected volatility	54.00%	53.00%
Dividend rate	0.00%	0.00%
Weighted average fair value per share, stock options (in dollars per share)	$21.98	$10.12

Stockholders_Equity_and_Employ4

Stockholders’ Equity and Employee Benefit Plans (Stock Option Activities) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013
Number of Shares Underlying Outstanding Options [Roll Forward]	'	'
Number of Shares Underlying Outstanding Options, Beginning Balance	6,663,000	'
Number of Shares Underlying Outstanding Options, Granted	239,000	'
Number of Shares Underlying Outstanding Options, Exercised	-1,008,000	'
Number of Shares Underlying Outstanding Options, Forfeitures and Expirations	-24,000	'
Number of Shares Underlying Outstanding Options, Ending Balance	5,870,000	6,663,000
Number of Shares Underlying Outstanding Options, Vested and Expected to Vest	5,594,000	'
Number of Shares Underlying Outstanding Options, Exercisable	2,614,000	'
Weighted Average Exercise Price [Roll Forward]	'	'
Weighted Average Exercise Price, Beginning Balance	$9.35	'
Weighted Average Exercise Price, Granted	$42.10	'
Weighted Average Exercise Price, Exercised	$6.08	'
Weighted Average Exercise Price, Forfeitures and Expirations	$14.12	'
Weighted Average Exercise Price, Ending Balance	$11.23	$9.35
Weighted-Average Exercise Price, Vested and Expected to Vest	$10.86	'
Weighted-Average Exercise Price, Exercisable	$6.80	'
Weighted Average Remaining Contractual Term [Abstract]	'	'
Weighted Average Remaining Contractual Term	'7 years 5 months 15 days	'7 years 5 months 19 days
Weighted-Average Remaining Contractual Term, Vested and Expected to Vest	'7 years 4 months 24 days	'
Weighted-Average Remaining Contractual Term, Exercisable	'6 years 5 months 23 days	'
Aggregate Intrinsic Value [Abstract]	'	'
Aggregate Intrinsic Value, Outstanding	$195,013	$155,580
Aggregate Intrinsic Value, Vested and Expected to Vest	187,918	'
Aggregate Intrinsic Value, Exercisable	$98,438	'

Stockholders_Equity_and_Employ5

Stockholders’ Equity and Employee Benefit Plans (Restricted Stock Units Activities) (Details) (Restricted Stock Units (RSUs) [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Oct. 31, 2013
Restricted Stock Units (RSUs) [Member]	'
Number of Units [Roll Forward]	'
Number of Units, Oustanding	1,986
Number of Units, Granted	1,053
Number of Units, Vested	-205
Number of Units, Cancellations due to forfeitures	-31
Number of Units, Oustanding	2,803
Weighted Average Grant Date Fair Value [Roll Forward]	'
Weighted Average Grant Date Fair Value, Outstanding	$21.15
Weighted Average Grant Date Fair Value, Granted	$42.56
Weighted Average Grant Date Fair Value, Vested	$20.74
Weighted Average Grant Date Fair Value, Cancellations due to forfeitures	$30.37
Weighted Average Grant Date Fair Value, Outstanding	$29.38

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Provision for income taxes	$544,000	$197,000
Federal income tax provision	$300,000	'

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Jul. 31, 2013
	segment
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Number of reportable segments	1	'	'
Net revenue	$63,521	$49,505	'
Property and equipment, net	18,464	'	18,370
Americas [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Net revenue	43,303	32,643	'
Property and equipment, net	17,988	'	17,997
EMEA [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Net revenue	13,978	11,703	'
Property and equipment, net	193	'	149
Asia Pacific [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Net revenue	6,240	5,159	'
Property and equipment, net	283	'	224
United States [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Net revenue	40,400	31,000	'
Property and equipment, net	$18,000	'	$18,000