Barracuda Networks (CUDA) 10-Q 13 Jan 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Nov. 30, 2013	Dec. 31, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Nov-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'CUDA	'
Entity Registrant Name	'BARRACUDA NETWORKS INC	'
Entity Central Index Key	'0001348334	'
Current Fiscal Year End Date	'--02-28	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	50,864,290

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$117,249	$30,095
Marketable securities	1,231	1,550
Accounts receivable, net of allowance for doubtful accounts of $1,252 and $1,923 as of February 28, 2013 and November 30, 2013, respectively	28,781	24,066
Inventories	6,365	5,138
Prepaid income taxes	297	1,120
Deferred costs	24,461	20,119
Deferred income taxes	29,717	26,158
Other current assets	3,253	3,216
Total current assets	211,354	111,462
Property and equipment, net	20,299	16,972
Deferred costs, noncurrent	23,809	19,351
Deferred income taxes, noncurrent	25,265	21,065
Other noncurrent assets	1,724	1,637
Intangible assets, net	9,383	7,983
Goodwill	36,026	33,778
Total assets	327,860	212,248
Current liabilities:	'	'
Accounts payable	13,688	12,756
Accrued payroll and related benefits	6,388	9,967
Other accrued liabilities	11,439	9,925
Deferred revenue	159,578	146,257
Deferred income taxes	132	132
Note payable	233	222
Total current liabilities	191,458	179,259
Long-term liabilities:	'	'
Deferred revenue, noncurrent	139,245	114,986
Deferred income taxes, noncurrent	672	660
Note payable, noncurrent	4,695	4,872
Other long-term liabilities	4,873	4,537
Commitments and contingencies (Note 9)	'	'
Redeemable convertible preferred stock: $0.001 par value; 17,626,227 and zero shares authorized as of February 28, 2013 and November 30, 2013, respectively; 17,626,227 and zero shares issued and outstanding as of February 28, 2013 and November 30, 2013, respectively	'	167,554
Stockholders' deficit:	'	'
Preferred stock, $0.001 par value; zero and 20,000,000 shares authorized as of February 28, 2013 and November 30, 2013, respectively; zero shares issued and outstanding as of February 28, 2013 and November 30, 2013	'	'
Common stock, $0.001 par value; 53,333,334 and 1,000,000,000 shares authorized as of February 28, 2013 and November 30, 2013, respectively; 28,091,081 and 50,850,602 shares issued and outstanding as of February 28, 2013 and November 30, 2013, respectively	51	28
Additional paid-in capital	277,139	23,080
Accumulated other comprehensive loss	-868	-1,112
Accumulated deficit	-286,359	-279,131
Total stockholders' deficit controlling interest	-10,037	-257,135
Total stockholders' deficit non-controlling interest	-3,046	-2,485
Total stockholders' deficit	-13,083	-259,620
Total liabilities, redeemable convertible preferred stock, and stockholders' deficit	$327,860	$212,248

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Accounts receivable, allowance for doubtful accounts	$1,923	$1,252
Redeemable convertible preferred stock, par value	$0.00	$0.00
Redeemable convertible preferred stock, shares authorized	0	17,626,227
Redeemable convertible preferred stock, shares issued	0	17,626,227
Redeemable convertible preferred stock, shares outstanding	0	17,626,227
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	20,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	1,000,000,000	53,333,334
Common stock, shares issued	50,850,602	28,091,081
Common stock, shares outstanding	50,850,602	28,091,081

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Revenue:	'	'	'	'
Appliance	$18,174	$15,424	$53,583	$43,199
Subscription	41,212	36,003	119,870	103,261
Total revenue	59,386	51,427	173,453	146,460
Cost of revenue	14,017	11,394	40,498	32,680
Gross profit	45,369	40,033	132,955	113,780
Operating expenses:	'	'	'	'
Research and development	12,083	8,925	34,563	25,015
Sales and marketing	28,785	25,471	86,013	74,773
General and administrative	7,513	9,198	22,018	22,080
Total operating expenses	48,381	43,594	142,594	121,868
Loss from operations	-3,012	-3,561	-9,639	-8,088
Other income (expense), net	121	362	-329	-526
Loss before income taxes and non-controlling interest	-2,891	-3,199	-9,968	-8,614
Benefit for income taxes	599	1,076	2,735	2,369
Consolidated net loss	-2,292	-2,123	-7,233	-6,245
Net loss attributable to non-controlling interest	199	150	561	612
Net loss attributable to Barracuda Networks, Inc.	($2,093)	($1,973)	($6,672)	($5,633)
Net loss per share attributable to Barracuda Networks, Inc.:	'	'	'	'
Basic and diluted	($0.06)	($0.06)	($0.22)	($0.17)
Weighted-average shares used to compute net loss per share attributable to Barracuda Networks, Inc.:	'	'	'	'
Basic and diluted	34,256	30,441	30,179	33,360

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net loss attributable to Barracuda Networks, Inc.	($2,093)	($1,973)	($6,672)	($5,633)
Other comprehensive income (loss), net of tax:	'	'	'	'
Change in net foreign currency translation adjustment	467	307	433	-730
Available-for-sale investments:	'	'	'	'
Change in net unrealized gains (losses) (net of tax effect of $95 and $18 for the three months ended November 30, 2012 and 2013, respectively, and $360 and $113 for the nine months ended November 30, 2012 and 2013, respectively)	16	-157	-189	-595
Less: reclassification adjustment for net (gains) losses included in net income	'	'	'	'
Net change	16	-157	-189	-595
Other comprehensive income (loss)	483	150	244	-1,325
Comprehensive loss attributable to Barracuda Networks, Inc.	($1,610)	($1,823)	($6,428)	($6,958)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Change in net unrealized gains (losses), tax	$18	$95	$113	$360

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012
Operating activities	'	'
Consolidated net loss	($7,233)	($6,245)
Adjustments to reconcile consolidated net loss to net cash provided by operating activities:	'	'
Depreciation and amortization	7,115	6,006
Stock-based compensation expense	7,551	6,357
Excess tax benefits from employee stock-based option plan	-374	-1,687
Loss on disposal of property and equipment	296	113
Deferred income taxes	-8,340	365
Changes in operating assets and liabilities:	'	'
Accounts receivable	-4,541	121
Inventory	-1,227	302
Income taxes, net	2,547	-6,179
Deferred costs	-8,801	-8,045
Other current assets	17	-1,892
Other noncurrent assets	383	-202
Accounts payable	-2,307	-2,492
Accrued payroll and related benefits	-1,429	5,769
Other accrued liabilities	1,211	5,121
Other long-term liabilities	331	88
Deferred revenue	37,477	33,111
Net cash provided by operating activities	22,676	30,611
Investing activities	'	'
Proceeds from sales of marketable securities	'	388
Purchase of investment in nonmarketable equity and debt securities	-310	'
Purchase of property and equipment	-5,857	-3,051
Purchase of intangible assets	-28	'
Business combinations, net of cash acquired	-8,475	-4,356
Net cash used in investing activities	-14,670	-7,019
Financing activities	'	'
Net proceeds from initial public offering	78,007	'
Proceeds from issuance of common stock	1,929	2,452
Dividends paid	-1,419	-128,385
Proceeds from issuance of Series B stock, net of issuance costs	'	125,732
Issuance costs on line of credit	'	-313
Repurchase of common stock	-723	-127,612
Excess tax benefits from employee stock-based option plan	374	1,687
Repayment of employee loans, net of loans extended	1,195	'
Repayment of note payable	-166	-139
Net cash (used in) provided by financing activities	79,197	-126,578
Effect of exchange rate changes on cash and cash equivalents	-49	-72
Net (decrease) increase in cash and cash equivalents	87,154	-103,058
Cash and cash equivalents at beginning of period	30,095	126,507
Cash and cash equivalents at end of period	117,249	23,449
Non-cash financing and investing activities:	'	'
Accretion of issuance costs	'	1,812
Conversion of preferred stock into common stock	$167,554	'

Overview_and_Basis_of_Presenta

Overview and Basis of Presentation	9 Months Ended
	Nov. 30, 2013
Accounting Policies [Abstract]	'
Overview and Basis of Presentation	'
	1. Overview and Basis of Presentation
	Nature of Operations
	Barracuda Networks, Inc., also referred to in this report as “we,” “our” or “us,” headquartered in Campbell, California, designs and delivers powerful yet easy-to-use security and storage solutions. We offer cloud-connected solutions that help our customers address security threats, improve network performance and protect and store their data. Our solutions are designed to simplify IT operations for our customers, allowing them to enhance their return on technology investment.
	Initial Public Offering
	On November 12, 2013, we completed our initial public offering (the “IPO”) in which we sold 4,761,000 shares of our common stock at a public offering price of $18.00 per share, which included 621,000 shares of common stock issued pursuant to the exercise in full of the over-allotment option by the underwriters. The IPO resulted in proceeds of $75.5 million, net of offering costs and underwriting discounts and commissions. As of November 30, 2013, $2.7 million of accrued costs remained unpaid and these costs are expected to be paid by the end of our fiscal year. In connection with the closing of the IPO, all of our outstanding redeemable convertible preferred stock automatically converted into 17,626,227 shares of common stock on a one-to-one basis.
	Reverse Stock Split
	On October 15, 2013, we effected a one-for-three reverse stock split and our board of directors (the “Board”) and stockholders approved an amendment of our certificate of incorporation such that, immediately prior to the completion of our IPO, our authorized capital stock consisted of 1,000,000,000 shares of common stock, $0.001 par value per share, and 20,000,000 shares of preferred stock, $0.001 par value per share. All information in this Quarterly Report on Form 10-Q relating to the number of shares, price per share and per share amounts gives retroactive effect to the one-for-three reverse stock split of our capital stock.
	Basis of Presentation
	The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), and following the requirements of the U.S. Securities and Exchange Commission (the “SEC”) for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. In management’s opinion, the unaudited condensed financial statements have been prepared on the same basis as the audited financial statements and include all adjustments, which include only normal recurring adjustments, necessary for the fair presentation of our financial information. The results for the nine months ended November 30, 2013 are not necessarily indicative of the results expected for the full fiscal year. The condensed balance sheet as of February 28, 2013 has been derived from audited financial statements at that date but does not include all of the information required by GAAP.
	The accompanying unaudited condensed financial statements include the accounts of Barracuda Networks, Inc. and our wholly and majority-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated.
	The accompanying unaudited condensed financial statements and related financial information should be read in conjunction with the audited financial statements and related footnotes included in our prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”), with the SEC on November 6, 2013 (the “Prospectus”). There have been no material changes in our significant accounting policies from those that were disclosed in our audited consolidated financial statements for the fiscal year ended February 28, 2013 included in the Prospectus.
	Use of Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to the fair values of stock-based awards, income taxes and contingent liabilities, among others. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from those estimates.
	Recent Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued an accounting standards update which addressed the presentation of amounts reclassified from accumulated other comprehensive income (loss). This update does not change current financial reporting requirements, instead an entity is required to cross-reference to other required disclosures that provide additional detail about amounts reclassified out of accumulated other comprehensive income (loss). In addition, the guidance requires an entity to present significant amounts reclassified out of accumulated other comprehensive income (loss) by line item of net income (loss) if the amount reclassified is required to be reclassified to net income (loss) in its entirety in the same reporting period. This standard is effective prospectively for reporting periods beginning after December 15, 2012. We adopted this standard during the first quarter of fiscal 2014 and did not have any amounts reclassified in fiscal 2014. Since the standard impacts financial statement disclosure requirements only, we did not have material effects on our results of operations, financial position or liquidity.
	In July 2013, the FASB issued an accounting standards update which provided 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. This standard will be effective for us beginning in the first quarter of fiscal 2015. Early adoption is permitted. Since the standard impacts financial statement disclosure requirements only, we do not expect its adoption to have an impact on our results of operations, financial position or liquidity.

Net_Loss_Per_Share

Net Loss Per Share	9 Months Ended
	Nov. 30, 2013
Earnings Per Share [Abstract]	'
Net Loss Per Share	'
	2. Net Loss Per Share
	Basic and diluted net loss per share attributable to common stockholders is presented in conformity with the two-class method required for participating securities. In the event a dividend is declared or paid on our common stock, holders of Series A and Series B redeemable convertible preferred stock are entitled to a proportionate share of such dividend in proportion to the holders of common stock on an as-if converted basis. In connection with our IPO in November 2013, all of our outstanding redeemable convertible preferred stock converted into common stock. Prior to their conversion, we considered all of our redeemable convertible preferred stock to be participating securities.
	Under the two-class method, basic net loss per share attributable to common stockholders is computed by dividing the net loss attributable to common stockholders by the weighted average number of common shares outstanding during the period. Net loss attributable to common stockholders is determined by allocating undistributed earnings between common and redeemable convertible preferred stockholders. Diluted net income per share attributable to common stockholders is computed by using the weighted average number of shares of common stock outstanding, including potential dilutive common shares assuming the dilutive effect of outstanding stock options, restricted stock units, common stock subject to repurchase or forfeiture and redeemable convertible preferred stock using the treasury stock method. As we had net losses for the periods presented, the number of shares used in the computation of diluted net loss per share is the same as that used for the computation of basic net loss per share, as the inclusion of dilutive securities would be anti-dilutive. Under the two-class method, the net loss attributable to common stockholders is not allocated to the convertible redeemable preferred stock as the convertible redeemable preferred stock do not have a contractual obligation to share in our losses.
	The following table presents the calculation of basic and diluted net loss per share of common stock (in thousands, except per share amounts):
		Three Months Ended						Nine Months Ended
		November 30,						November 30,
		2012			2013			2012			2013
	Net loss attributable to Barracuda Networks, Inc.	$	(1,973	)	$	(2,093	)	$	(5,633	)	$	(6,672	)
	Shares used to compute basic and diluted net loss per share attributable to Barracuda Networks, Inc.:
	Weighted average common shares outstanding		30,442			34,256			33,368			30,179
	Less: Weighted average shares subject to repurchase or forfeiture		(1	)		—			(8	)		—
	Weighted average shares used to compute net loss per share, basic and diluted		30,441			34,256			33,360			30,179
	Basic and diluted net loss per share attributable to Barracuda Networks, Inc.	$	(0.06	)	$	(0.06	)	$	(0.17	)	$	(0.22	)
	The following potential shares of common stock outstanding were excluded from the computation of diluted net loss per share attributable to Barracuda Networks, Inc. for the periods presented as their effect would have been anti-dilutive (in thousands):
		Three Months Ended						Nine Months Ended
		November 30,						November 30,
		2012			2013			2012			2013
	Stock options and restricted stock units		6,322			6,026			6,322			6,026
	Redeemable convertible preferred stock		17,626			—			17,626			—

Balance_Sheet_Information

Balance Sheet Information	9 Months Ended
	Nov. 30, 2013
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Balance Sheet Information	'
	3. Balance Sheet Information
	Cash, Cash Equivalents and Marketable Securities
			February 28,			November 30,
			2013			2013
			(in thousands)
	Cash and cash equivalents:
	Cash		$	20,812		$	24,278
	Money market funds			9,283			92,971
	Total cash and cash equivalents		$	30,095		$	117,249
	Marketable securities:
	Equity securities			1,550			1,231
	Total marketable securities		$	1,550		$	1,231
	The following table summarizes our marketable securities (in thousands):
			February 28, 2013
			Cost			Gross			Gross			Estimated
						Unrealized			Unrealized			Fair Value
						Gains			Losses
	Equity securities		$	1,458		$	92		$	—		$	1,550
			November 30, 2013
			Cost			Gross			Gross			Estimated
						Unrealized			Unrealized			Fair Value
						Gains			Losses
	Equity securities		$	1,440		$	—		$	(209	)	$	1,231
	Fair Value Measurements
	We determine the fair values of our financial instruments based on the 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. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value assumes that the transaction to sell the asset or transfer the liability occurs in the principal or most advantageous market for the asset or liability and establishes that the fair value of an asset or liability shall be determined based on the assumptions that market participants would use in pricing the asset or liability. 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:
	Level 1:	Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.
	Level 2:	Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
	Level 3:	Inputs are unobservable inputs based on our assumptions.
	Cash equivalents and marketable securities are classified within Level 1 because they are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs.
	Financial assets measured at fair value on a recurring basis are summarized below (in thousands):
			Level 1			Level 2			Level 3			Total
												February 28,
												2013
	Money market funds		$	9,283		$	—		$	—		$	9,283
	Equity securities			1,550			—			—			1,550
			$	10,833		$	—		$	—		$	10,833
			Level 1			Level 2			Level 3			Total
												November 30,
												2013
	Money market funds		$	92,971		$	—		$	—		$	92,971
	Equity securities			1,231			—			—			1,231
			$	94,202		$	—		$	—		$	94,202
	Inventories
	Inventories consisted of the following (in thousands):
			February 28,			November 30,
			2013			2013
	Raw materials		$	3,042		$	2,987
	Finished goods			2,096			3,378
	Total inventories		$	5,138		$	6,365
	Deferred Costs
	Deferred costs consisted of the following (in thousands):
			February 28,			November 30,
			2013			2013
	Appliance		$	27,751		$	33,524
	Commissions			11,719			14,746
	Total deferred costs		$	39,470		$	48,270
	Property and Equipment
	Property and equipment consisted of the following (in thousands):
			February 28,			November 30,
			2013			2013
	Land		$	5,100		$	5,100
	Building			6,549			6,549
	Computer hardware and software			8,656			11,091
Vehicles, machinery and equipment			1,478			2,257
Leasehold improvements			1,488			2,310
			23,271			27,307
Less: accumulated depreciation			6,299			7,008
		$	16,972		$	20,299
Depreciation expense was $0.7 million and $1.9 million for the three and nine months ended November 30, 2012, respectively, and $1.1 million and $2.7 million for the three and nine months ended November 30, 2013, respectively.
Investment in Nonmarketable Equity Security
In October 2011, we acquired stock in a privately held company for $750,000, which represents an ownership interest of approximately 24%. Under the equity method of accounting, we recognize our proportional share of earnings and losses of the investee in our financial statements and adjust the carrying amount of our investment accordingly. For the three and nine months ended November 30, 2012 and 2013, our proportionate share of the investee’s losses was not material.
The investment is classified in other noncurrent assets in the consolidated balance sheets.
Accumulated Other Comprehensive Income (Loss)
The components of accumulated other comprehensive income (loss), net of tax, were as follows (in thousands):
		Foreign			Unrealized Gains			Total
		Currency			(Losses) on
		Translation			Available-for-
		Adjustments			Sale Investments
Balance as of February 28, 2013		$	(1,169	)	$	57		$	(1,112	)
Other comprehensive income (loss) before reclassifications			433			(189	)		244
Amounts reclassified from accumulated other comprehensive income (loss)			—			—			—
Other comprehensive income (loss)			433			(189	)		244
Balance as of November 30, 2013		$	(736	)	$	(132	)	$	(868	)

Acquisition

Acquisition	9 Months Ended
	Nov. 30, 2013
Business Combinations [Abstract]	'
Acquisition	'
	4. Acquisition
	SignNow
	On April 24, 2013, we completed our acquisition of SignNow, Inc. (“SignNow”), a privately-held provider of mobile eSignature applications located in California. The acquisition of SignNow will enable us to expand our cloud-based offerings. We acquired all outstanding stock of SignNow for aggregate cash consideration of approximately $6.7 million. In addition, $4.5 million of cash consideration is contingent upon the continued employment of certain key employees of SignNow and is recognized as compensation expense over the requisite service period. We assumed $0.6 million of unvested SignNow stock options, which will be recorded as stock compensation expense over the weighted-average remaining service period of approximately 3.0 years from the date of acquisition.
	We recorded the assets acquired and liabilities assumed at their estimated fair value, with the difference between the fair value of the net assets acquired and the purchase consideration reflected as goodwill.
	The following table reflects the fair values of assets acquired and liabilities assumed as of the acquisition date (in thousands):
	Cash	$	56
	Accounts receivable		110
	Developed technology		4,780
	Customer relationships		510
	Trade name		390
	Goodwill		1,899
	Accrued expenses		(340	)
	Deferred tax liability		(686	)
	Total value of assets acquired and liabilities assumed	$	6,719
	The goodwill of $1.9 million is primarily attributed to the synergies expected to arise after the acquisition. No goodwill was deemed to be deductible for income tax purposes.
	Included in our results of operations for the nine months ended November 30, 2013 are $0.4 million and $0.7 million of revenue and net loss, respectively, attributable to SignNow since the April 24, 2013 date of acquisition. The following table presents our unaudited pro forma revenue and net loss for periods presented, assuming the acquisition had occurred on March 1, 2012 (in thousands):
		Three Months Ended			Nine Months Ended
		November 30,			November 30,
		2012			2012			2013
	Pro forma revenue	$	51,439		$	146,475		$	173,578
	Pro forma net loss attributable to Barracuda Networks, Inc.	$	(3,184	)	$	(9,425	)	$	(7,349	)

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
	Nov. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	5. Goodwill and Intangible Assets
	The changes in the carrying amount of goodwill are summarized below (in thousands):
	Balance as of February 28, 2013	$	33,778
	Goodwill acquired		1,899
	Effect of foreign exchange rates		349
	Balance as of November 30, 2013	$	36,026
	Intangible assets subject to amortization are summarized below (in thousands):
		February 28, 2013
		Gross		Accumulated		Net
		Carrying		Amortization		Carrying
		Amount				Value
	Acquired developed technology	$	21,403	$	16,910	$	4,493
	Software license		400		400		—
	Customer relationships		6,814		4,708		2,106
	Patents		1,625		687		938
	Trade name		273		259		14
	Acquired developed software		200		177		23
		$	30,715	$	23,141	$	7,574
		November 30, 2013
		Gross		Accumulated		Net
		Carrying		Amortization		Carrying
		Amount				Value
	Acquired developed technology	$	26,299	$	20,336	$	5,963
	Software license		400		400		—
	Customer relationships		7,445		5,628		1,817
	Patents		1,625		826		799
	Trade name		662		295		367
	Acquired developed software		200		200		—
		$	36,631	$	27,685	$	8,946
	In addition to the above, we maintain other intangible assets not subject to amortization, principally related to the domain name www.barracuda.com, of $409,000 as of February 28, 2013 and $437,000 as of November 30, 2013.
	Acquired developed technology, software license, customer relationships, patents, trade name and acquired developed software are amortized on a straight-line basis and have weighted-average useful lives from the date of purchase of 5.0 years, 5.0 years, 5.8 years, 9.0 years, 3.7 years and 5.0 years, respectively, as of February 28, 2013, and 5.0 years, 5.0 years, 5.9 years, 9.0 years, 7.4 years and 5.0 years, respectively, as of November 30, 2013.
	Amortization expense was $1.4 million and $4.2 million for the three and nine months ended November 30, 2012, respectively, and $1.3 million and $4.4 million for the three and nine months ended November 30, 2013, respectively.
	As of November 30, 2013, amortization expense for intangible assets for each of the next five years is as follows: $1.0 million in fiscal 2014, $3.0 million in fiscal 2015, $1.7 million in fiscal 2016, $1.5 million in fiscal 2017, $1.2 million in fiscal 2018 and $0.5 million thereafter.

Stockholders_Deficit

Stockholders' Deficit	9 Months Ended
	Nov. 30, 2013
Equity [Abstract]	'
Stockholders' Deficit	'
	6. Stockholders’ Deficit
	Redeemable Convertible Preferred Stock
	In connection with the closing of our IPO, all of our outstanding redeemable convertible preferred stock was converted into 17,626,227 shares of common stock on a one-to-one basis.
	Stock Option Plan and Restricted Stock Units
	Our 2004 Stock Option Plan (the “2004 Plan”) authorized the Board to grant incentive stock options and non-statutory stock options, as well as restricted stock to employees, directors and consultants. In May 2012, the Board approved the termination of the 2004 Plan and the introduction of the 2012 Equity Incentive Plan (the “2012 Plan”), which provides for the grant of stock options, stock appreciation rights, restricted stock and restricted stock units (“RSUs”) to employees, directors and consultants.
	Total stock-based compensation expense has been classified as follows in the accompanying condensed consolidated statements of operations (in thousands):
		Three Months Ended November 30,				Nine Months Ended November 30,
		2012		2013		2012		2013
	Cost of revenue	$	53	$	58	$	129	$	146
	Research and development		603		209		1,486		1,474
	Sales and marketing		314		578		813		1,278
	General and administrative		753		1,578		3,929		4,653
	Total compensation expense	$	1,723	$	2,423	$	6,357	$	7,551
	For the nine months ended November 30, 2013, options to purchase 310,970 shares of common stock were granted and options to purchase 59,726 shares of common stock were assumed in the acquisition of SignNow (Note 4).
	During the nine months ended November 30, 2012 and 2013, the total grant-date fair value of stock options vested was $2.5 million and $4.2 million, respectively, and the aggregate intrinsic value of stock option awards exercised, which is measured as the difference between the exercise price and the value of our common stock at the date of exercise, was $10.2 million and $3.2 million, respectively.

Income_Taxes

Income Taxes	9 Months Ended
	Nov. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	7. Income Taxes
	For the three months ended November 30, 2012 and 2013, we recorded income tax benefit of $1.1 million and $0.6 million, respectively, resulting in an effective tax rate of 33.6% and 20.7%, respectively. For the nine months ended November 30, 2012 and 2013, we recorded income tax benefit of $2.4 million and $2.7 million, respectively, resulting in an effective tax rate of 27.5% and 27.4%, respectively.
	The difference between the income tax benefit that would be derived by applying the statutory rate to our loss before tax and the income tax benefit actually recorded is primarily due to the impact of non-deductible stock-based compensation expenses and other currently non-deductible items and various discrete items.
	We recognize interest and/or penalties related to uncertain tax positions in income tax expense. In the three and nine months ended November 30, 2013, we recorded interest and penalties of $17,000 and $169,000, respectively.

Segment_Information

Segment Information	9 Months Ended
	Nov. 30, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	8. Segment Information
	Our chief operating decision maker reviews the financial information presented on a consolidated basis for purposes of allocating resources and evaluating our financial performance. Accordingly, we have determined that we operate in a single reporting segment.
	Revenue by geographic region is presented as follows (in thousands):
		Three Months Ended				Nine Months Ended
		November 30,				November 30,
		2012		2013		2012		2013
	North America	$	36,975	$	43,293	$	109,430	$	126,122
	United States		34,651		40,538		103,506		118,066
	Other		2,324		2,755		5,924		8,056
	Latin America		923		726		2,377		2,662
	Asia-Pacific		4,094		4,058		10,561		12,200
	EMEA		9,435		11,309		24,092		32,469
	Total	$	51,427	$	59,386	$	146,460	$	173,453
	Revenue earned in any one foreign country did not exceed 10% of total revenue in the three and nine months ended November 30, 2012 and 2013.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Nov. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	9. Commitments and Contingencies
	Legal Matters
	In late 2011, following a voluntary internal review of our compliance with U.S. export control and sanctions laws, our management team became aware that certain of our physical appliances had been sold indirectly into embargoed countries via our distributors and resellers, potentially in violation of U.S. export control and economic sanctions laws. In addition, certain of our solutions incorporate encryption components and may be exported from the U.S. only with the required approvals; in the past, we may have exported products prior to receiving these required authorizations. After completion of a comprehensive internal investigation conducted by outside counsel, we submitted voluntary disclosures regarding these matters to the U.S. Commerce Department, Bureau of Industry and Security (“BIS”), and to the U.S. Treasury Department, Office of Foreign Assets Control (“OFAC”). These disclosures summarized potential violations of export controls and economic sanctions laws, including reexports by third parties and provision of services to end users in embargoed countries including Iran, Sudan and Syria. If we are found to have violated U.S. export control laws, we may be subject to various penalties available under the laws, the amount of which is currently not estimable.
	On August 13, 2013, Parallel Networks, LLC (“Parallel Networks”), which we believe is a non-practicing entity, filed a lawsuit against us in the U.S. District Court for the District of Delaware, Parallel Networks, LLC v. Barracuda Networks, Inc., Case No. 1:13-cv-01412-UNA, alleging that certain of our appliances infringe two of their U.S. patents: U.S. Pat. No. 7,571,217, titled “Method and System for Uniform Resource Locator Transformation,” and U.S. Pat. No. 8,352,570, titled “Method and System for Uniform Resource Locator Transformation.” Parallel Networks has asserted similar claims against other companies, including Array Networks, Inc., Brocade Communications Systems, Inc., Citrix Systems, Inc., Riverbed Technology, Inc. and SAP AG. This matter is in its early stages, but we intend to vigorously defend the lawsuit. Given the early stage of the litigation, we are unable to estimate a possible loss or range of possible loss.
	From time to time, we are party to litigation and subject to claims that arise in the ordinary course of our business, including actions with respect to employment claims and other matters. Although the results of litigation and claims are inherently unpredictable, we believe that the final outcome of such matters will not have a material adverse effect on our business, consolidated financial position, results of operations or cash flows.

Overview_and_Basis_of_Presenta1

Overview and Basis of Presentation (Policies)	9 Months Ended
	Nov. 30, 2013
Accounting Policies [Abstract]	'
Nature of Operations	'
	Nature of Operations
	Barracuda Networks, Inc., also referred to in this report as “we,” “our” or “us,” headquartered in Campbell, California, designs and delivers powerful yet easy-to-use security and storage solutions. We offer cloud-connected solutions that help our customers address security threats, improve network performance and protect and store their data. Our solutions are designed to simplify IT operations for our customers, allowing them to enhance their return on technology investment.
Initial Public Offering	'
	Initial Public Offering
	On November 12, 2013, we completed our initial public offering (the “IPO”) in which we sold 4,761,000 shares of our common stock at a public offering price of $18.00 per share, which included 621,000 shares of common stock issued pursuant to the exercise in full of the over-allotment option by the underwriters. The IPO resulted in proceeds of $75.5 million, net of offering costs and underwriting discounts and commissions. As of November 30, 2013, $2.7 million of accrued costs remained unpaid and these costs are expected to be paid by the end of our fiscal year. In connection with the closing of the IPO, all of our outstanding redeemable convertible preferred stock automatically converted into 17,626,227 shares of common stock on a one-to-one basis.
Reverse Stock Split	'
	Reverse Stock Split
	On October 15, 2013, we effected a one-for-three reverse stock split and our board of directors (the “Board”) and stockholders approved an amendment of our certificate of incorporation such that, immediately prior to the completion of our IPO, our authorized capital stock consisted of 1,000,000,000 shares of common stock, $0.001 par value per share, and 20,000,000 shares of preferred stock, $0.001 par value per share. All information in this Quarterly Report on Form 10-Q relating to the number of shares, price per share and per share amounts gives retroactive effect to the one-for-three reverse stock split of our capital stock.
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), and following the requirements of the U.S. Securities and Exchange Commission (the “SEC”) for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. In management’s opinion, the unaudited condensed financial statements have been prepared on the same basis as the audited financial statements and include all adjustments, which include only normal recurring adjustments, necessary for the fair presentation of our financial information. The results for the nine months ended November 30, 2013 are not necessarily indicative of the results expected for the full fiscal year. The condensed balance sheet as of February 28, 2013 has been derived from audited financial statements at that date but does not include all of the information required by GAAP.
	The accompanying unaudited condensed financial statements include the accounts of Barracuda Networks, Inc. and our wholly and majority-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated.
	The accompanying unaudited condensed financial statements and related financial information should be read in conjunction with the audited financial statements and related footnotes included in our prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”), with the SEC on November 6, 2013 (the “Prospectus”). There have been no material changes in our significant accounting policies from those that were disclosed in our audited consolidated financial statements for the fiscal year ended February 28, 2013 included in the Prospectus.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to the fair values of stock-based awards, income taxes and contingent liabilities, among others. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from those estimates.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued an accounting standards update which addressed the presentation of amounts reclassified from accumulated other comprehensive income (loss). This update does not change current financial reporting requirements, instead an entity is required to cross-reference to other required disclosures that provide additional detail about amounts reclassified out of accumulated other comprehensive income (loss). In addition, the guidance requires an entity to present significant amounts reclassified out of accumulated other comprehensive income (loss) by line item of net income (loss) if the amount reclassified is required to be reclassified to net income (loss) in its entirety in the same reporting period. This standard is effective prospectively for reporting periods beginning after December 15, 2012. We adopted this standard during the first quarter of fiscal 2014 and did not have any amounts reclassified in fiscal 2014. Since the standard impacts financial statement disclosure requirements only, we did not have material effects on our results of operations, financial position or liquidity.
	In July 2013, the FASB issued an accounting standards update which provided 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. This standard will be effective for us beginning in the first quarter of fiscal 2015. Early adoption is permitted. Since the standard impacts financial statement disclosure requirements only, we do not expect its adoption to have an impact on our results of operations, financial position or liquidity.

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	9 Months Ended
	Nov. 30, 2013
Earnings Per Share [Abstract]	'
Calculation of Basic and Diluted Net Loss Per Share of Common Stock	'
	The following table presents the calculation of basic and diluted net loss per share of common stock (in thousands, except per share amounts):
		Three Months Ended						Nine Months Ended
		November 30,						November 30,
		2012			2013			2012			2013
	Net loss attributable to Barracuda Networks, Inc.	$	(1,973	)	$	(2,093	)	$	(5,633	)	$	(6,672	)
	Shares used to compute basic and diluted net loss per share attributable to Barracuda Networks, Inc.:
	Weighted average common shares outstanding		30,442			34,256			33,368			30,179
	Less: Weighted average shares subject to repurchase or forfeiture		(1	)		—			(8	)		—
	Weighted average shares used to compute net loss per share, basic and diluted		30,441			34,256			33,360			30,179
	Basic and diluted net loss per share attributable to Barracuda Networks, Inc.	$	(0.06	)	$	(0.06	)	$	(0.17	)	$	(0.22	)
Summary of Anti-dilutive Shares not Included in Computation of Diluted Net Loss Per Share Attributable to Barracuda Networks, Inc.	'
	The following potential shares of common stock outstanding were excluded from the computation of diluted net loss per share attributable to Barracuda Networks, Inc. for the periods presented as their effect would have been anti-dilutive (in thousands):
		Three Months Ended						Nine Months Ended
		November 30,						November 30,
		2012			2013			2012			2013
	Stock options and restricted stock units		6,322			6,026			6,322			6,026
	Redeemable convertible preferred stock		17,626			—			17,626			—

Balance_Sheet_Information_Tabl

Balance Sheet Information (Tables)	9 Months Ended
	Nov. 30, 2013
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Cash, Cash Equivalents and Marketable Securities	'
	Cash, Cash Equivalents and Marketable Securities
		February 28,			November 30,
		2013			2013
		(in thousands)
	Cash and cash equivalents:
	Cash	$	20,812		$	24,278
	Money market funds		9,283			92,971
	Total cash and cash equivalents	$	30,095		$	117,249
	Marketable securities:
	Equity securities		1,550			1,231
	Total marketable securities	$	1,550		$	1,231
Marketable Securities	'
	The following table summarizes our marketable securities (in thousands):
		February 28, 2013
		Cost			Gross			Gross			Estimated
					Unrealized			Unrealized			Fair Value
					Gains			Losses
	Equity securities	$	1,458		$	92		$	—		$	1,550
		November 30, 2013
		Cost			Gross			Gross			Estimated
					Unrealized			Unrealized			Fair Value
					Gains			Losses
	Equity securities	$	1,440		$	—		$	(209	)	$	1,231
Financial Assets Measured at Fair Value on Recurring Basis	'
	Financial assets measured at fair value on a recurring basis are summarized below (in thousands):
		Level 1			Level 2			Level 3			Total
											February 28,
											2013
	Money market funds	$	9,283		$	—		$	—		$	9,283
	Equity securities		1,550			—			—			1,550
		$	10,833		$	—		$	—		$	10,833
		Level 1			Level 2			Level 3			Total
											November 30,
											2013
	Money market funds	$	92,971		$	—		$	—		$	92,971
	Equity securities		1,231			—			—			1,231
		$	94,202		$	—		$	—		$	94,202
Inventories	'
	Inventories consisted of the following (in thousands):
		February 28,			November 30,
		2013			2013
	Raw materials	$	3,042		$	2,987
	Finished goods		2,096			3,378
	Total inventories	$	5,138		$	6,365
Deferred Costs	'
	Deferred costs consisted of the following (in thousands):
		February 28,			November 30,
		2013			2013
	Appliance	$	27,751		$	33,524
	Commissions		11,719			14,746
	Total deferred costs	$	39,470		$	48,270
Property and Equipment	'
	Property and equipment consisted of the following (in thousands):
		February 28,			November 30,
		2013			2013
	Land	$	5,100		$	5,100
	Building		6,549			6,549
	Computer hardware and software		8,656			11,091
	Vehicles, machinery and equipment		1,478			2,257
	Leasehold improvements		1,488			2,310
			23,271			27,307
	Less: accumulated depreciation		6,299			7,008
		$	16,972		$	20,299
Components of Accumulated Other Comprehensive Income (Loss), Net of Tax	'
	The components of accumulated other comprehensive income (loss), net of tax, were as follows (in thousands):
		Foreign			Unrealized Gains			Total
		Currency			(Losses) on
		Translation			Available-for-
		Adjustments			Sale Investments
	Balance as of February 28, 2013	$	(1,169	)	$	57		$	(1,112	)
	Other comprehensive income (loss) before reclassifications		433			(189	)		244
	Amounts reclassified from accumulated other comprehensive income (loss)		—			—			—
	Other comprehensive income (loss)		433			(189	)		244
	Balance as of November 30, 2013	$	(736	)	$	(132	)	$	(868	)

Acquisition_Tables

Acquisition (Tables)	9 Months Ended
	Nov. 30, 2013
Business Combinations [Abstract]	'
Schedule of Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table reflects the fair values of assets acquired and liabilities assumed as of the acquisition date (in thousands):
	Cash	$	56
	Accounts receivable		110
	Developed technology		4,780
	Customer relationships		510
	Trade name		390
	Goodwill		1,899
	Accrued expenses		(340	)
	Deferred tax liability		(686	)
	Total value of assets acquired and liabilities assumed	$	6,719
Schedule of Pro Forma Revenue and Net Loss	'
	The following table presents our unaudited pro forma revenue and net loss for periods presented, assuming the acquisition had occurred on March 1, 2012 (in thousands):
		Three Months Ended			Nine Months Ended
		November 30,			November 30,
		2012			2012			2013
	Pro forma revenue	$	51,439		$	146,475		$	173,578
	Pro forma net loss attributable to Barracuda Networks, Inc.	$	(3,184	)	$	(9,425	)	$	(7,349	)

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Nov. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Schedule of Changes in Carrying Amount of Goodwill	'
	The changes in the carrying amount of goodwill are summarized below (in thousands):
	Balance as of February 28, 2013	$	33,778
	Goodwill acquired		1,899
	Effect of foreign exchange rates		349
	Balance as of November 30, 2013	$	36,026
Schedule of Intangible Assets Subject to Amortization	'
	Intangible assets subject to amortization are summarized below (in thousands):
		February 28, 2013
		Gross		Accumulated		Net
		Carrying		Amortization		Carrying
		Amount				Value
	Acquired developed technology	$	21,403	$	16,910	$	4,493
	Software license		400		400		—
	Customer relationships		6,814		4,708		2,106
	Patents		1,625		687		938
	Trade name		273		259		14
	Acquired developed software		200		177		23
		$	30,715	$	23,141	$	7,574
		November 30, 2013
		Gross		Accumulated		Net
		Carrying		Amortization		Carrying
		Amount				Value
	Acquired developed technology	$	26,299	$	20,336	$	5,963
	Software license		400		400		—
	Customer relationships		7,445		5,628		1,817
	Patents		1,625		826		799
	Trade name		662		295		367
	Acquired developed software		200		200		—
		$	36,631	$	27,685	$	8,946

Stockholders_Deficit_Tables

Stockholders' Deficit (Tables)	9 Months Ended
	Nov. 30, 2013
Equity [Abstract]	'
Schedule of Total Stock-Based Compensation Expense	'
	Total stock-based compensation expense has been classified as follows in the accompanying condensed consolidated statements of operations (in thousands):
		Three Months Ended November 30,				Nine Months Ended November 30,
		2012		2013		2012		2013
	Cost of revenue	$	53	$	58	$	129	$	146
	Research and development		603		209		1,486		1,474
	Sales and marketing		314		578		813		1,278
	General and administrative		753		1,578		3,929		4,653
	Total compensation expense	$	1,723	$	2,423	$	6,357	$	7,551

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Nov. 30, 2013
Segment Reporting [Abstract]	'
Schedule of Revenue by Geographic Region	'
	Revenue by geographic region is presented as follows (in thousands):
		Three Months Ended				Nine Months Ended
		November 30,				November 30,
		2012		2013		2012		2013
	North America	$	36,975	$	43,293	$	109,430	$	126,122
	United States		34,651		40,538		103,506		118,066
	Other		2,324		2,755		5,924		8,056
	Latin America		923		726		2,377		2,662
	Asia-Pacific		4,094		4,058		10,561		12,200
	EMEA		9,435		11,309		24,092		32,469
	Total	$	51,427	$	59,386	$	146,460	$	173,453

Overview_and_Basis_of_Presenta2

Overview and Basis of Presentation - Additional Information (Detail) (USD $)	0 Months Ended		9 Months Ended
	Nov. 12, 2013	Oct. 15, 2013	Nov. 30, 2013	Nov. 30, 2012	Feb. 28, 2013
Initial Public Offering [Line Items]	'	'	'	'	'
Initial public offering, common stock shares issued	4,761,000	'	'	'	'
Initial public offering, price per share	$18	'	'	'	'
Proceeds from IPO	$75,500,000	'	$78,007,000	'	'
Offering costs unpaid	'	'	$2,700,000	'	'
Number of redeemable convertible preferred stock converted to common stock	17,626,227	'	17,626,227	'	'
Conversion of outstanding redeemable convertible preferred stock into common stock	'One-to-one basis	'	'	'	'
Reverse stock split	'	'One-for-three	'	'	'
Common stock, shares authorized	'	1,000,000,000	1,000,000,000	'	53,333,334
Common stock, par value	'	$0.00	$0.00	'	$0.00
Preferred stock, shares authorized	'	20,000,000	20,000,000	'	0
Preferred stock, par value	'	$0.00	$0.00	'	$0.00
Underwriters [Member]	'	'	'	'	'
Initial Public Offering [Line Items]	'	'	'	'	'
Initial public offering, common stock shares issued	621,000	'	'	'	'

Net_Loss_Per_Share_Calculation

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share of Common Stock (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Net loss attributable to Barracuda Networks, Inc.	($2,093)	($1,973)	($6,672)	($5,633)
Shares used to compute basic and diluted net loss per share attributable to Barracuda Networks, Inc.:	'	'	'	'
Weighted average common shares outstanding	34,256	30,442	30,179	33,368
Less: Weighted average shares subject to repurchase or forfeiture	'	-1	'	-8
Weighted average shares used to compute net loss per share, basic and diluted	34,256	30,441	30,179	33,360
Basic and diluted net loss per share attributable to Barracuda Networks, Inc.	($0.06)	($0.06)	($0.22)	($0.17)

Net_Loss_Per_Share_Summary_of_

Net Loss Per Share - Summary of Anti-dilutive Shares not Included in Computation of Diluted Net Loss Per Share Attributable to Barracuda Networks, Inc. (Detail)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Stock options and restricted stock units [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares excluded from calculation of diluted net loss per share	6,026	6,322	6,026	6,322
Redeemable convertible preferred stock [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Shares excluded from calculation of diluted net loss per share	'	17,626	'	17,626

Balance_Sheet_Information_Cash

Balance Sheet Information - Cash, Cash Equivalents and Marketable Securities (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013	Nov. 30, 2012	Feb. 29, 2012
In Thousands, unless otherwise specified
Cash and Cash Equivalents [Line Items]	'	'	'	'
Total cash and cash equivalents	$117,249	$30,095	$23,449	$126,507
Total marketable securities	1,231	1,550	'	'
Cash [Member]	'	'	'	'
Cash and Cash Equivalents [Line Items]	'	'	'	'
Cash	24,278	20,812	'	'
Money market funds [Member]	'	'	'	'
Cash and Cash Equivalents [Line Items]	'	'	'	'
Money market funds	92,971	9,283	'	'
Equity securities [Member]	'	'	'	'
Cash and Cash Equivalents [Line Items]	'	'	'	'
Total marketable securities	$1,231	$1,550	'	'

Balance_Sheet_Information_Mark

Balance Sheet Information - Marketable Securities (Detail) (Equity securities [Member], USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Equity securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Marketable securities, Cost	$1,440	$1,458
Marketable securities, Gross Unrealized Gains	'	92
Marketable securities, Gross Unrealized Losses	-209	'
Marketable securities, Estimated Fair Value	$1,231	$1,550

Balance_Sheet_Information_Fina

Balance Sheet Information - Financial Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	$94,202	$10,833
Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	92,971	9,283
Equity securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	1,231	1,550
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	94,202	10,833
Level 1 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	92,971	9,283
Level 1 [Member] | Equity securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	1,231	1,550
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Equity securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | Money market funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | Equity securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'

Balance_Sheet_Information_Inve

Balance Sheet Information - Inventories (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$2,987	$3,042
Finished goods	3,378	2,096
Total inventories	$6,365	$5,138

Balance_Sheet_Information_Defe

Balance Sheet Information - Deferred Costs (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Deferred Revenue And Deferred Cost [Line Items]	'	'
Total deferred costs	$48,270	$39,470
Appliance [Member]	'	'
Deferred Revenue And Deferred Cost [Line Items]	'	'
Total deferred costs	33,524	27,751
Commissions [Member]	'	'
Deferred Revenue And Deferred Cost [Line Items]	'	'
Total deferred costs	$14,746	$11,719

Balance_Sheet_Information_Prop

Balance Sheet Information - Property and Equipment (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$27,307	$23,271
Less: accumulated depreciation	7,008	6,299
Property and equipment, net	20,299	16,972
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	5,100	5,100
Building [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	6,549	6,549
Computer hardware and software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	11,091	8,656
Vehicles, machinery and equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	2,257	1,478
Leasehold improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$2,310	$1,488

Balance_Sheet_Information_Addi

Balance Sheet Information - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012	Oct. 31, 2011
Statement Of Financial Position [Abstract]	'	'	'	'	'
Depreciation expense	$1,100,000	$700,000	$2,700,000	$1,900,000	'
Ownership interest	'	'	'	'	24.00%
Stock acquired in a privately held company	'	'	'	'	$750,000

Balance_Sheet_Information_Comp

Balance Sheet Information - Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	($1,112)
Other comprehensive income (loss) before reclassifications	244
Amounts reclassified from accumulated other comprehensive income (loss)	'
Other comprehensive income (loss)	244
Ending balance	-868
Foreign Currency Translation Adjustments [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	-1,169
Other comprehensive income (loss) before reclassifications	433
Amounts reclassified from accumulated other comprehensive income (loss)	'
Other comprehensive income (loss)	433
Ending balance	-736
Unrealized Gains (Losses) on Available-for-Sale Investments [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	57
Other comprehensive income (loss) before reclassifications	-189
Amounts reclassified from accumulated other comprehensive income (loss)	'
Other comprehensive income (loss)	-189
Ending balance	($132)

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013	Apr. 24, 2013	Nov. 30, 2013
			SignNow Inc. [Member]	SignNow Inc. [Member]
Business Acquisition [Line Items]	'	'	'	'
Acquisition date	'	'	'	24-Apr-13
Cash consideration	'	'	$6,700,000	'
Contingent cash consideration upon continued employment	'	'	4,500,000	'
Unvested stock options assumed	'	'	600,000	'
Unvested stock options assumed, weighted-average remaining service period	'	'	'3 years	'
Goodwill	36,026,000	33,778,000	1,899,000	'
Revenue included in results of operations	'	'	'	400,000
Net loss included in results of operations	'	'	'	$700,000

Acquisition_Schedule_of_Fair_V

Acquisition - Schedule of Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013	Apr. 24, 2013	Apr. 24, 2013	Apr. 24, 2013	Apr. 24, 2013
In Thousands, unless otherwise specified			SignNow Inc. [Member]	Acquired developed technology [Member]	Customer relationships [Member]	Trade name [Member]
				SignNow Inc. [Member]	SignNow Inc. [Member]	SignNow Inc. [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'
Cash	'	'	$56	'	'	'
Accounts receivable	'	'	110	'	'	'
Intangible assets	'	'	'	4,780	510	390
Goodwill	36,026	33,778	1,899	'	'	'
Accrued expenses	'	'	-340	'	'	'
Deferred tax liability	'	'	-686	'	'	'
Total value of assets acquired and liabilities assumed	'	'	$6,719	'	'	'

Acquisition_Schedule_of_Pro_Fo

Acquisition - Schedule of Pro Forma Revenue and Net Loss (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Business Combinations [Abstract]	'	'	'
Pro forma revenue	$51,439	$173,578	$146,475
Pro forma net loss attributable to Barracuda Networks, Inc.	($3,184)	($7,349)	($9,425)

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Balance at beginning of fiscal period	$33,778
Goodwill acquired	1,899
Effect of foreign exchange rates	349
Balance at end of fiscal period	$36,026

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Detail) (USD $)	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$36,631	$30,715
Accumulated Amortization	27,685	23,141
Net Carrying Value	8,946	7,574
Acquired developed technology [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	26,299	21,403
Accumulated Amortization	20,336	16,910
Net Carrying Value	5,963	4,493
Software license [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	400	400
Accumulated Amortization	400	400
Net Carrying Value	'	'
Customer relationships [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	7,445	6,814
Accumulated Amortization	5,628	4,708
Net Carrying Value	1,817	2,106
Patents [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,625	1,625
Accumulated Amortization	826	687
Net Carrying Value	799	938
Trade name [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	662	273
Accumulated Amortization	295	259
Net Carrying Value	367	14
Acquired developed software [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	200	200
Accumulated Amortization	200	177
Net Carrying Value	'	$23

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

Nov. 30, 2013

Nov. 30, 2012

Nov. 30, 2013

Nov. 30, 2012

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Nov. 30, 2013

Feb. 28, 2013

Acquired developed technology [Member]

Acquired developed technology [Member]

Software license [Member]

Software license [Member]

Customer relationships [Member]

Customer relationships [Member]

Patents [Member]

Patents [Member]

Trade name [Member]

Trade name [Member]

Acquired developed software [Member]

Acquired developed software [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other intangible assets not subject to amortization

$437,000

'

$437,000

'

$409,000

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets weighted-average useful lives

'

'

'

'

'

'5 years

'5 years

'5 years

'5 years

'5 years 10 months 24 days

'5 years 9 months 18 days

'9 years

'9 years

'7 years 4 months 24 days

'3 years 8 months 12 days

'5 years

'5 years

Amortization expense

1,300,000

1,400,000

4,400,000

4,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for fiscal 2014

1,000,000

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for fiscal 2015

3,000,000

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for fiscal 2016

1,700,000

'

1,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for fiscal 2017

1,500,000

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for fiscal 2018

1,200,000

'

1,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense thereafter

$500,000

'

$500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockholders_Deficit_Additiona

Stockholders' Deficit - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, except Share data, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 12, 2013
Equity [Abstract]	'	'	'
Number of redeemable convertible preferred stock converted to common stock	17,626,227	'	17,626,227
Conversion ratio	'One-to-one basis	'	'
Options to purchase, number of common stock granted	310,970	'	'
Options to purchase, number of common stock assumed in acquisition	59,726	'	'
Total grant-date fair value of stock options vested	$4.20	$2.50	'
Aggregate intrinsic value of stock option exercised	$3.20	$10.20	'

Stockholders_Deficit_Schedule_

Stockholders' Deficit - Schedule of Total Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$2,423	$1,723	$7,551	$6,357
Cost of revenue [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	58	53	146	129
Research and development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	209	603	1,474	1,486
Sales and marketing [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	578	314	1,278	813
General and administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$1,578	$753	$4,653	$3,929

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax benefit	$599,000	$1,076,000	$2,735,000	$2,369,000
Effective tax rate resulting from income tax benefit	20.70%	33.60%	27.40%	27.50%
Interest and penalties recognized related to uncertain tax positions	$17,000	'	$169,000	'

Segment_Information_Schedule_o

Segment Information - Schedule of Revenue by Geographic Region (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	$59,386	$51,427	$173,453	$146,460
Operating Segments [Member] | North America [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	43,293	36,975	126,122	109,430
Operating Segments [Member] | United States [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	40,538	34,651	118,066	103,506
Operating Segments [Member] | Other [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	2,755	2,324	8,056	5,924
Operating Segments [Member] | Latin America [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	726	923	2,662	2,377
Operating Segments [Member] | Asia-Pacific [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	4,058	4,094	12,200	10,561
Operating Segments [Member] | EMEA [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	$11,309	$9,435	$32,469	$24,092

Segment_Information_Additional

Segment Information - Additional Information (Detail) (Sales [Member], Maximum [Member])	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Sales [Member] | Maximum [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue rate, percent	10.00%	10.00%	10.00%	10.00%