Barracuda Networks (CUDA) 10-Q 14 Oct 14 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Aug. 31, 2014	Sep. 30, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Aug-14	'
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q2	'
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	'	51,950,714

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$156,559	$135,879
Accounts receivable, net of allowance for doubtful accounts of $1,367 and $2,134 as of August 31, 2014 and February 28, 2014, respectively	36,739	27,836
Inventories, net	5,183	5,648
Prepaid income taxes	1,337	1,147
Deferred costs	28,157	25,707
Deferred income taxes	33,840	30,156
Other current assets	4,300	3,753
Total current assets	266,115	230,126
Property and equipment, net	22,230	20,558
Deferred costs, non-current	26,425	24,572
Deferred income taxes, non-current	31,198	28,515
Other non-current assets	2,033	1,851
Intangible assets, net	10,652	8,420
Goodwill	41,025	36,014
Total assets	399,678	350,056
Current liabilities:	'	'
Accounts payable	12,708	13,743
Accrued payroll and related benefits	8,048	8,494
Other accrued liabilities	10,473	9,374
Deferred revenue	187,153	167,562
Deferred income taxes	291	260
Note payable	244	237
Total current liabilities	218,917	199,670
Long-term liabilities:	'	'
Deferred revenue, non-current	156,525	145,595
Deferred income taxes, non-current	951	84
Note payable, non-current	4,510	4,635
Other long-term liabilities	7,664	5,727
Commitments and contingencies (Note 8)	'	'
Stockholders' equity (deficit):	'	'
Preferred stock, $0.001 par value; 20,000,000 shares authorized; zero shares issued and outstanding as of August 31, 2014 and February 28, 2014	'	'
Common stock, $0.001 par value; 1,000,000,000 shares authorized; 51,920,115 and 51,045,196 shares issued and outstanding as of August 31, 2014 and February 28, 2014, respectively	52	52
Additional paid-in capital	295,003	278,551
Accumulated other comprehensive loss	-1,392	-817
Accumulated deficit	-282,552	-283,441
Total stockholders' equity (deficit)	11,111	-5,655
Total liabilities and stockholders' equity (deficit)	$399,678	$350,056

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts receivable, allowance for doubtful accounts	$1,367	$2,134
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	20,000,000	20,000,000
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	1,000,000,000
Common stock, shares issued	51,920,115	51,045,196
Common stock, shares outstanding	51,920,115	51,045,196

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Revenue:	'	'	'	'
Appliance	$20,676	$17,906	$41,512	$35,409
Subscription	47,976	39,884	93,349	78,658
Total revenue	68,652	57,790	134,861	114,067
Cost of revenue	14,044	13,407	28,450	26,481
Gross profit	54,608	44,383	106,411	87,586
Operating expenses:	'	'	'	'
Research and development	13,826	11,638	26,778	22,480
Sales and marketing	31,031	28,392	60,510	57,228
General and administrative	8,624	7,827	17,188	14,505
Total operating expenses	53,481	47,857	104,476	94,213
Income (loss) from operations	1,127	-3,474	1,935	-6,627
Other income (expense), net	-681	7	-738	-450
Income (loss) before income taxes and non-controlling interest	446	-3,467	1,197	-7,077
Benefit (provision) for income taxes	292	1,089	-308	2,136
Consolidated net income (loss)	738	-2,378	889	-4,941
Net loss attributable to non-controlling interest	'	203	'	362
Net income (loss) attributable to Barracuda Networks, Inc.	$738	($2,175)	$889	($4,579)
Net income (loss) per share attributable to Barracuda Networks, Inc.:	'	'	'	'
Basic	$0.01	($0.08)	$0.02	($0.16)
Diluted	$0.01	($0.08)	$0.02	($0.16)
Weighted-average shares used to compute net income (loss) per share attributable to Barracuda Networks, Inc.:	'	'	'	'
Basic	51,667	28,182	51,412	28,141
Diluted	53,743	28,182	53,675	28,141

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income (loss) attributable to Barracuda Networks, Inc.	$738	($2,175)	$889	($4,579)
Other comprehensive income (loss), net of tax:	'	'	'	'
Change in net foreign currency translation adjustment	-606	281	-575	-34
Available-for-sale investments:	'	'	'	'
Change in net unrealized gains (losses) (net of tax effect of $0, $85, $0 and $126)	'	-138	'	-205
Less: reclassification adjustment for net (gains) losses included in net income	'	'	'	'
Net change	'	-138	'	-205
Other comprehensive income (loss)	-606	143	-575	-239
Comprehensive income (loss) attributable to Barracuda Networks, Inc.	$132	($2,032)	$314	($4,818)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Change in net unrealized gains (losses), tax	$0	$85	$0	$126

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013
Operating activities	'	'
Consolidated net income (loss)	$889	($4,941)
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:	'	'
Depreciation and amortization	4,422	4,734
Stock-based compensation	6,818	5,128
Excess tax benefits from equity incentive plan	-4,338	-226
Loss on disposal of property and equipment	31	36
Deferred income taxes	-6,198	-5,467
Changes in operating assets and liabilities:	'	'
Accounts receivable, net	-8,527	-1,016
Inventories, net	463	-1,515
Income taxes, net	3,073	-514
Deferred costs	-4,412	-6,588
Other current assets	-247	-902
Other non-current assets	100	211
Accounts payable	-1,267	-264
Accrued payroll and related benefits	-29	-1,883
Other accrued liabilities	476	-303
Other long-term liabilities	55	71
Deferred revenue	29,573	25,522
Net cash provided by operating activities	20,882	12,083
Investing activities	'	'
Purchase of investment in non-marketable equity and debt securities	-600	-310
Purchase of property and equipment	-3,775	-4,529
Purchase of intangible assets	'	-28
Business combinations, net of cash acquired	-4,791	-8,475
Net cash used in investing activities	-9,166	-13,342
Financing activities	'	'
Proceeds from issuance of common stock	7,246	441
Taxes paid related to net share settlement of equity awards	-2,340	-1,191
Dividends paid	'	-1,419
Repurchase of common stock	'	-723
Excess tax benefits from equity incentive plan	4,338	226
Extended (repayment of) employee loans	-70	3,119
Repayment of note payable	-118	-111
Transaction costs related to initial public offering	'	-147
Net cash provided by financing activities	9,056	195
Effect of exchange rate changes on cash and cash equivalents	-92	-35
Net increase (decrease) in cash and cash equivalents	20,680	-1,099
Cash and cash equivalents at beginning of period	135,879	30,095
Cash and cash equivalents at end of period	$156,559	$28,996

Overview_and_Basis_of_Presenta

Overview and Basis of Presentation	6 Months Ended
	Aug. 31, 2014
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,” “us,” “Barracuda” or “the Company,” is headquartered in Campbell, California, and 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 investments.
	Use of Estimates
	The preparation of financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. We evaluate our estimates on an ongoing basis, 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 we believe 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.
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP, and follow 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 are 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 three and six months ended August 31, 2014 are not necessarily indicative of the results expected for the full fiscal year. The condensed consolidated balance sheet as of February 28, 2014 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 consolidated 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 consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and related footnotes included in our most recent Annual Report on Form 10-K. There have been no material changes in our significant accounting policies from those that were disclosed in our Annual Report on Form 10-K for the fiscal year ended February 28, 2014.
	Reclassifications
	We have reclassified certain immaterial prior period amounts within our condensed consolidated statements of cash flows to conform to our current fiscal year presentation.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (the “FASB”) issued an accounting standard which completes the joint effort by the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and improve financial reporting by creating common revenue recognition guidance for GAAP and International Financial Reporting Standards. The core principle of this update is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We intend to adopt this update in the first quarter of fiscal year 2018 at which point it will begin to affect us. The standard allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying this update recognized at the date of initial application. We are currently evaluating the impact of adopting this update on our consolidated financial statements.

Balance_Sheet_Information

Balance Sheet Information	6 Months Ended
	Aug. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Balance Sheet Information	'
	2. Balance Sheet Information
	Cash and Cash Equivalents
	The following table summarizes our cash and cash equivalents (in thousands):
		August 31,			February 28,
		2014			2014
	Cash	$	61,904		$	41,331
	Money market funds		94,655			94,548
		$	156,559		$	135,879
	Fair Value Measurements
	We determine fair value 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 are classified within Level 1 because they are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs. We have no financial assets or liabilities measured, on a recurring basis, utilizing Level 2 inputs. We estimated the fair value of our Level 3 contingent consideration liability based a weighted probability assessment of achieving the earnout related to the acquisition of C2C Systems Limited (“C2C”). Significant increases (decreases) in the probability assumptions in isolation would result in a significantly higher (lower) fair value measurement. In developing these estimates, we considered unobservable inputs that are supported by little or no market activity and reflect our own assumptions. Refer to Note 3 to Condensed Consolidated Financial Statements for further information.
	The following table summarizes, for assets or liabilities measured at fair value, the respective classification by level of input within the fair value hierarchy (in thousands):
		August 31, 2014
		Level 1			Level 2			Level 3			Total
	Cash equivalents: Money market funds	$	94,655		$	—		$	—		$	94,655
	Other accrued liabilities (current):
	Contingent consideration liability	$	—		$	—		$	1,035		$	1,035
	Other long-term liabilities:
	Contingent consideration liability	$	—		$	—		$	1,889		$	1,889
		28-Feb-14
		Level 1			Level 2			Level 3			Total
	Cash equivalents:
	Money market funds	$	94,548		$	—		$	—		$	94,548
	Inventories, Net
	Inventories, net, consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Raw materials	$	2,677		$	3,038
	Finished goods		3,500			3,759
	Reserves		(994	)		(1,149	)
		$	5,183		$	5,648
	Deferred Costs
	Deferred costs consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Appliance	$	38,491		$	35,000
	Commissions		16,091			15,279
		$	54,582		$	50,279
	Property and Equipment, Net
	Property and equipment, net, consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Land	$	5,100		$	5,100
	Building		6,549			6,549
	Computer hardware and software		14,796			11,711
	Vehicles, machinery and equipment		2,685			2,462
	Leasehold improvements		2,989			2,560
			32,119			28,382
	Accumulated depreciation and amortization		(9,889	)		(7,824	)
		$	22,230		$	20,558
	Depreciation and amortization expense related to property and equipment was $1.2 million and $2.3 million for the three and six months ended August 31, 2014, respectively, and $0.8 million and $1.6 million for the three and six months ended August 31, 2013, respectively.
	Accumulated Other Comprehensive Loss
	The components of accumulated other comprehensive 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, 2014	$	(817	)	$	—		$	(817	)
	Other comprehensive income (loss) before reclassifications		(575	)		—			(575	)
	Amounts reclassified from accumulated other comprehensive income (loss)		—			—			—
Other comprehensive income (loss)		(575	)		—			(575	)
Balance as of August 31, 2014	$	(1,392	)	$	—		$	(1,392	)

Acquisition

Acquisition	6 Months Ended
	Aug. 31, 2014
Business Combinations [Abstract]	'
Acquisition	'
	3. Acquisition
	C2C Systems Limited
	In August 2014, we completed our acquisition of C2C, a provider of personal storage table file (“PST”) management, email archiving and information management solutions based in the United Kingdom. The acquisition of C2C will better position us to offer customers a more complete archiving and information management product portfolio to simplify IT and control storage costs. We acquired all of the issued and outstanding stock of C2C for aggregate consideration of $9.6 million. In connection with the acquisition, contingent consideration is payable up to $4.9 million upon the attainment of certain billings levels and performance integration targets through August 2017. At the acquisition date, we estimated fair value for contingent consideration to be $2.9 million.
	We recorded the assets acquired and liabilities assumed from C2C, 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	$	1,355
	Net other tangible assets		290
	Developed technology		2,990
	Customer relationships		1,340
	Trade name		30
	Goodwill		5,376
	Deferred revenue		(1,015	)
	Deferred tax liability		(736	)
	Total value of assets acquired and liabilities assumed	$	9,630
	The fair values of assets acquired and liabilities assumed were based on a preliminary valuation and our estimates and assumptions are subject to change within the measurement period. The primary areas of the purchase price allocation that are not yet finalized are related to accrued expenses, income taxes and residual goodwill.
	As of the acquisition date, developed technology, customer relationships and the C2C trade name had weighted-average useful lives of 6.4 years, 7.3 years and 2.0 years, respectively. The total weighted-average useful life of these acquired intangible assets is 6.7 years. The goodwill is primarily attributed to the synergies expected to be realized following the acquisition. No goodwill was deemed to be deductible for income tax purposes. Pro forma results of operations for C2C have not been presented because they are not material to our consolidated results of operations.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	6 Months Ended
	Aug. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	4. Goodwill and Intangible Assets
	The changes in the carrying amount of goodwill are summarized as follows (in thousands):
		August 31,
		2014
	Balance at February 28, 2014	$	36,014
	Goodwill acquired		5,376
	Effect of foreign exchange rates		(365	)
	Balance at August 31, 2014	$	41,025
	Intangible assets subject to amortization are summarized as follows (in thousands):
		August 31, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	29,184		$	(22,517	)	$	6,667
	Software license		400			(400	)		—
	Customer relationships		8,677			(6,016	)		2,661
	Patents		1,625			(965	)		660
	Trade names		513			(145	)		368
	Acquired developed software		200			(200	)		—
		$	40,599		$	(30,243	)	$	10,356
		February 28, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	26,315		$	(21,111	)	$	5,204
	Software license		400			(400	)		—
	Customer relationships		7,463			(5,794	)		1,669
	Patents		1,625			(873	)		752
	Trade names		663			(305	)		358
	Acquired developed software		200			(200	)		—
		$	36,666		$	(28,683	)	$	7,983
	In addition to the above, we maintained other intangible assets not subject to amortization of $296,000 and $437,000 as of August 31, 2014 and February 28, 2014, respectively.
	Amortization expense was $1.1 million and $2.1 million for the three and six months ended August 31, 2014, respectively, and $1.7 million and $3.1 million for the three and six months ended August 31, 2013, respectively.
	As of August 31, 2014, amortization expense for intangible assets in future periods was as follows: $1.4 million for the remainder of fiscal year 2015, $2.4 million for fiscal year 2016, $2.2 million for fiscal year 2017, $1.9 million for fiscal year 2018, $1.0 million for fiscal year 2019 and $1.6 million thereafter.

Stockholders_Equity_Deficit

Stockholders' Equity (Deficit)	6 Months Ended
	Aug. 31, 2014
Equity [Abstract]	'
Stockholders' Equity (Deficit)	'
	5. Stockholders’ Equity (Deficit)
	Stock Option Plan and Restricted Stock Units
	Our 2012 Equity Incentive Plan (the “2012 Plan”) authorized the board of directors to grant stock options, stock appreciation rights, restricted stock and restricted stock units (“RSUs”) to employees, directors and consultants. Options granted are exercisable for periods not to exceed 10 years. Options and RSUs granted vest over four years contingent upon employment or service with us through the vesting date.
	As of August 31, 2014, net of forecasted forfeitures, there was $19.1 million of unrecognized compensation cost related to outstanding stock options, expected to be recognized over a weighted-average period of 2.89 years and $20.6 million of unrecognized compensation cost related to unvested RSUs, expected to be recognized over a weighted-average period of 3.00 years. To the extent the actual forfeiture rate is different from what management has anticipated, stock-based compensation related to these equity awards will be different from management’s expectations.
	Total stock-based compensation expense has been classified as follows in the accompanying condensed consolidated statements of operations (in thousands):
		Three Months Ended August 31,				Six Months Ended August 31,
		2014		2013		2014		2013
	Cost of revenue	$	73	$	43	$	125	$	88
	Research and development		902		635		1,650		1,265
	Sales and marketing		821		366		1,403		700
	General and administrative		1,940		1,587		3,640		3,075
		$	3,736	$	2,631	$	6,818	$	5,128

Income_Taxes

Income Taxes	6 Months Ended
	Aug. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	6. Income Taxes
	For the three and six months ended August 31, 2014, we recorded an income tax benefit of $0.3 million and income tax provision of $0.3 million, respectively. For the three and six months ended August 31, 2013, we recorded income tax benefits of $1.1 million and $2.1 million, respectively.
	The difference between the income tax benefit (provision) that would be derived by applying the statutory rate to our year-to-date income (loss) before tax and the income tax benefit (provision) 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.

Segment_Information

Segment Information	6 Months Ended
	Aug. 31, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	7. Segment Information
	Revenue by geographic region is presented as follows (in thousands):
		Three Months Ended				Six Months Ended
		August 31,				August 31,
		2014		2013		2014		2013
	North America	$	50,219	$	41,997	$	98,538	$	82,829
	United States		47,234		39,291		92,564		77,528
	Other		2,985		2,706		5,974		5,301
	Latin America		786		961		1,595		1,936
	Asia-Pacific		4,503		4,093		8,990		8,142
	EMEA		13,144		10,739		25,738		21,160
		$	68,652	$	57,790	$	134,861	$	114,067
	Our chief operating decision maker reviews the financial information presented on a consolidated basis for the purposes of allocating resources and evaluating our financial performance. Accordingly, we have determined that we operate in a single reporting segment.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Aug. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	8. 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.
	The Company received a Proposed Charging Letter from BIS on August 21, 2014 (“Letter”), which asserts certain export violations against the Company and its UK subsidiary. Based on discussions with BIS, the Company expects a one-time monetary penalty to be imposed, and does not currently expect any criminal charges, denial of export privileges, or ongoing monitoring actions. As requested by BIS in the Letter, the Company has contacted BIS within thirty days of the date of the Letter to indicate that supplemental information will be provided by the Company. The Company intends to continue cooperating with BIS in an effort to resolve this matter. However, given the early stage of our discussions, the Company is unable at this time to estimate the timing or amount of any final resolution.
	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. 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, if any.
	On April 23, 2014, Selene Communication Technologies, LLC (“Selene”) filed a lawsuit against us in the U.S. District Court for the District of Delaware, Selene Communication Technologies, LLC v. Barracuda Networks, Inc., Case No. 1:99-mc-09999, alleging that certain of our appliances infringe U.S. patent number 7,143,444, titled “Application-Layer Anomaly and Misuse Detection.” Selene has asserted similar claims against other companies. 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, if any.
	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.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	6 Months Ended
	Aug. 31, 2014
Earnings Per Share [Abstract]	'
Net Income (Loss) Per Share	'
	9. Net Income (Loss) Per Share
	Basic and diluted net income (loss) per share attributable to common stockholders was presented in conformity with the two-class method required for participating securities. Prior to the date of our initial public offering, we considered our Series A and Series B redeemable convertible preferred stock as participating securities. In the event a dividend was declared or paid on our common stock, holders of Series A and Series B redeemable convertible preferred stock were entitled to a proportionate share of such dividend in proportion to the holders of common stock on an as-if converted basis. Immediately after the completion of our initial public offering in November 2013, all outstanding shares of redeemable convertible preferred stock were converted into common stock.
	Through the date of our initial public offering, we utilized the two-class method to compute net income (loss) per share. Under the two-class method, basic net income (loss) per share attributable to common stockholders was computed by dividing the net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding during the period. Net income (loss) attributable to common stockholders was determined by allocating undistributed earnings between common and redeemable convertible preferred stockholders. Diluted net income (loss) per share attributable to common stockholders was 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, RSUs, common stock subject to repurchase or forfeiture and redeemable convertible preferred stock using the treasury stock method. For periods in which there was a net loss, the number of shares used in the computation of diluted net loss per share was 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 income (loss) attributable to common stockholders was not allocated to the convertible redeemable preferred stock as the convertible redeemable preferred stock did not have a contractual obligation to share in our losses.
	The following table presents the calculation of basic and diluted net income (loss) per share attributable to Barracuda Networks, Inc. (in thousands, except per share amounts):
		Three Months Ended					Six Months Ended
		August 31,					August 31,
		2014		2013			2014		2013
	Basic:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	738	$	(2,175	)	$	889	$	(4,579	)
	Weighted-average shares used to compute net income (loss) per share, basic		51,667		28,182			51,412		28,141
	Net income (loss) per share attributable to Barracuda Networks, Inc., basic	$	0.01	$	(0.08	)	$	0.02	$	(0.16	)
	Diluted:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	738	$	(2,175	)	$	889	$	(4,579	)
	Weighted-average shares used to compute net income (loss) per share, basic		51,667		28,182			51,412		28,141
	Add weighted-average effect of dilutive securities:
	Stock options and RSUs		2,076		—			2,263		—
	Weighted-average shares used to compute net income (loss) per share, diluted		53,743		28,182			53,675		28,141
	Net income (loss) per share attributable to Barracuda Networks, Inc., diluted	$	0.01	$	(0.08	)	$	0.02	$	(0.16	)

Overview_and_Basis_of_Presenta1

Overview and Basis of Presentation (Policies)	6 Months Ended
	Aug. 31, 2014
Accounting Policies [Abstract]	'
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. We evaluate our estimates on an ongoing basis, 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 we believe 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.
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP, and follow 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 are 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 three and six months ended August 31, 2014 are not necessarily indicative of the results expected for the full fiscal year. The condensed consolidated balance sheet as of February 28, 2014 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 consolidated 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 consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and related footnotes included in our most recent Annual Report on Form 10-K. There have been no material changes in our significant accounting policies from those that were disclosed in our Annual Report on Form 10-K for the fiscal year ended February 28, 2014.
Reclassifications	'
	Reclassifications
	We have reclassified certain immaterial prior period amounts within our condensed consolidated statements of cash flows to conform to our current fiscal year presentation.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (the “FASB”) issued an accounting standard which completes the joint effort by the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and improve financial reporting by creating common revenue recognition guidance for GAAP and International Financial Reporting Standards. The core principle of this update is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We intend to adopt this update in the first quarter of fiscal year 2018 at which point it will begin to affect us. The standard allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying this update recognized at the date of initial application. We are currently evaluating the impact of adopting this update on our consolidated financial statements.
Fair Value Measurements	'
	Fair Value Measurements
	We determine fair value 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 are classified within Level 1 because they are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs. We have no financial assets or liabilities measured, on a recurring basis, utilizing Level 2 inputs. We estimated the fair value of our Level 3 contingent consideration liability based a weighted probability assessment of achieving the earnout related to the acquisition of C2C Systems Limited (“C2C”). Significant increases (decreases) in the probability assumptions in isolation would result in a significantly higher (lower) fair value measurement. In developing these estimates, we considered unobservable inputs that are supported by little or no market activity and reflect our own assumptions. Refer to Note 3 to Condensed Consolidated Financial Statements for further information.
Segment Information	'
	Our chief operating decision maker reviews the financial information presented on a consolidated basis for the purposes of allocating resources and evaluating our financial performance. Accordingly, we have determined that we operate in a single reporting segment.
Net Income (Loss) Per Share	'
	Basic and diluted net income (loss) per share attributable to common stockholders was presented in conformity with the two-class method required for participating securities. Prior to the date of our initial public offering, we considered our Series A and Series B redeemable convertible preferred stock as participating securities. In the event a dividend was declared or paid on our common stock, holders of Series A and Series B redeemable convertible preferred stock were entitled to a proportionate share of such dividend in proportion to the holders of common stock on an as-if converted basis. Immediately after the completion of our initial public offering in November 2013, all outstanding shares of redeemable convertible preferred stock were converted into common stock.
	Through the date of our initial public offering, we utilized the two-class method to compute net income (loss) per share. Under the two-class method, basic net income (loss) per share attributable to common stockholders was computed by dividing the net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding during the period. Net income (loss) attributable to common stockholders was determined by allocating undistributed earnings between common and redeemable convertible preferred stockholders. Diluted net income (loss) per share attributable to common stockholders was 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, RSUs, common stock subject to repurchase or forfeiture and redeemable convertible preferred stock using the treasury stock method. For periods in which there was a net loss, the number of shares used in the computation of diluted net loss per share was 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 income (loss) attributable to common stockholders was not allocated to the convertible redeemable preferred stock as the convertible redeemable preferred stock did not have a contractual obligation to share in our losses.

Balance_Sheet_Information_Tabl

Balance Sheet Information (Tables)	6 Months Ended
	Aug. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Cash and Cash Equivalents	'
	The following table summarizes our cash and cash equivalents (in thousands):
		August 31,			February 28,
		2014			2014
	Cash	$	61,904		$	41,331
	Money market funds		94,655			94,548
		$	156,559		$	135,879
Summary of Assets or Liabilities Measured at Fair Value	'
	The following table summarizes, for assets or liabilities measured at fair value, the respective classification by level of input within the fair value hierarchy (in thousands):
		August 31, 2014
		Level 1			Level 2			Level 3			Total
	Cash equivalents: Money market funds	$	94,655		$	—		$	—		$	94,655
	Other accrued liabilities (current):
	Contingent consideration liability	$	—		$	—		$	1,035		$	1,035
	Other long-term liabilities:
	Contingent consideration liability	$	—		$	—		$	1,889		$	1,889
		28-Feb-14
		Level 1			Level 2			Level 3			Total
	Cash equivalents:
	Money market funds	$	94,548		$	—		$	—		$	94,548
Inventories, Net	'
	Inventories, net, consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Raw materials	$	2,677		$	3,038
	Finished goods		3,500			3,759
	Reserves		(994	)		(1,149	)
		$	5,183		$	5,648
Deferred Costs	'
	Deferred costs consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Appliance	$	38,491		$	35,000
	Commissions		16,091			15,279
		$	54,582		$	50,279
Property and Equipment, Net	'
	Property and equipment, net, consisted of the following (in thousands):
		August 31,			February 28,
		2014			2014
	Land	$	5,100		$	5,100
	Building		6,549			6,549
	Computer hardware and software		14,796			11,711
	Vehicles, machinery and equipment		2,685			2,462
	Leasehold improvements		2,989			2,560
			32,119			28,382
	Accumulated depreciation and amortization		(9,889	)		(7,824	)
		$	22,230		$	20,558
Components of Accumulated Other Comprehensive Loss, Net of Tax	'
	The components of accumulated other comprehensive 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, 2014	$	(817	)	$	—		$	(817	)
	Other comprehensive income (loss) before reclassifications		(575	)		—			(575	)
	Amounts reclassified from accumulated other comprehensive income (loss)		—			—			—
	Other comprehensive income (loss)		(575	)		—			(575	)
	Balance as of August 31, 2014	$	(1,392	)	$	—		$	(1,392	)

Acquisition_Tables

Acquisition (Tables)	6 Months Ended
	Aug. 31, 2014
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	$	1,355
	Net other tangible assets		290
	Developed technology		2,990
	Customer relationships		1,340
	Trade name		30
	Goodwill		5,376
	Deferred revenue		(1,015	)
	Deferred tax liability		(736	)
	Total value of assets acquired and liabilities assumed	$	9,630

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Aug. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Changes in Carrying Amount of Goodwill	'
	The changes in the carrying amount of goodwill are summarized as follows (in thousands):
		August 31,
		2014
	Balance at February 28, 2014	$	36,014
	Goodwill acquired		5,376
	Effect of foreign exchange rates		(365	)
	Balance at August 31, 2014	$	41,025
Schedule of Intangible Assets Subject to Amortization	'
	Intangible assets subject to amortization are summarized as follows (in thousands):
		August 31, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	29,184		$	(22,517	)	$	6,667
	Software license		400			(400	)		—
	Customer relationships		8,677			(6,016	)		2,661
	Patents		1,625			(965	)		660
	Trade names		513			(145	)		368
	Acquired developed software		200			(200	)		—
		$	40,599		$	(30,243	)	$	10,356
		February 28, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	26,315		$	(21,111	)	$	5,204
	Software license		400			(400	)		—
	Customer relationships		7,463			(5,794	)		1,669
	Patents		1,625			(873	)		752
	Trade names		663			(305	)		358
	Acquired developed software		200			(200	)		—
		$	36,666		$	(28,683	)	$	7,983

Stockholders_Equity_Deficit_Ta

Stockholders' Equity (Deficit) (Tables)	6 Months Ended
	Aug. 31, 2014
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 August 31,				Six Months Ended August 31,
		2014		2013		2014		2013
	Cost of revenue	$	73	$	43	$	125	$	88
	Research and development		902		635		1,650		1,265
	Sales and marketing		821		366		1,403		700
	General and administrative		1,940		1,587		3,640		3,075
		$	3,736	$	2,631	$	6,818	$	5,128

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Aug. 31, 2014
Segment Reporting [Abstract]	'
Schedule of Revenue by Geographic Region	'
	Revenue by geographic region is presented as follows (in thousands):
		Three Months Ended				Six Months Ended
		August 31,				August 31,
		2014		2013		2014		2013
	North America	$	50,219	$	41,997	$	98,538	$	82,829
	United States		47,234		39,291		92,564		77,528
	Other		2,985		2,706		5,974		5,301
	Latin America		786		961		1,595		1,936
	Asia-Pacific		4,503		4,093		8,990		8,142
	EMEA		13,144		10,739		25,738		21,160
		$	68,652	$	57,790	$	134,861	$	114,067

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Aug. 31, 2014
Earnings Per Share [Abstract]	'
Calculation of Basic and Diluted Net Income (Loss) Per Share Attributable to Barracuda Networks, Inc.	'
	The following table presents the calculation of basic and diluted net income (loss) per share attributable to Barracuda Networks, Inc. (in thousands, except per share amounts):
		Three Months Ended					Six Months Ended
		August 31,					August 31,
		2014		2013			2014		2013
	Basic:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	738	$	(2,175	)	$	889	$	(4,579	)
	Weighted-average shares used to compute net income (loss) per share, basic		51,667		28,182			51,412		28,141
	Net income (loss) per share attributable to Barracuda Networks, Inc., basic	$	0.01	$	(0.08	)	$	0.02	$	(0.16	)
	Diluted:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	738	$	(2,175	)	$	889	$	(4,579	)
	Weighted-average shares used to compute net income (loss) per share, basic		51,667		28,182			51,412		28,141
	Add weighted-average effect of dilutive securities:
	Stock options and RSUs		2,076		—			2,263		—
	Weighted-average shares used to compute net income (loss) per share, diluted		53,743		28,182			53,675		28,141
	Net income (loss) per share attributable to Barracuda Networks, Inc., diluted	$	0.01	$	(0.08	)	$	0.02	$	(0.16	)

Balance_Sheet_Information_Cash

Balance Sheet Information - Cash and Cash Equivalents (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Cash and Cash Equivalents [Abstract]	'	'	'	'
Cash	$61,904	$41,331	'	'
Money market funds	94,655	94,548	'	'
Total cash and cash equivalents	$156,559	$135,879	$28,996	$30,095

Balance_Sheet_Information_Summ

Balance Sheet Information - Summary of Assets or Liabilities Measured at Fair Value (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Money market funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Financial assets measured at fair value	$94,655	$94,548
Other accrued liabilities (current) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	1,035	'
Other long-term liabilities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	1,889	'
Level 1 [Member] | Money market funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Financial assets measured at fair value	94,655	94,548
Level 1 [Member] | Other accrued liabilities (current) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	'	'
Level 1 [Member] | Other long-term liabilities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	'	'
Level 2 [Member] | Money market funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Other accrued liabilities (current) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	'	'
Level 2 [Member] | Other long-term liabilities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	'	'
Level 3 [Member] | Money market funds [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | Other accrued liabilities (current) [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	1,035	'
Level 3 [Member] | Other long-term liabilities [Member]	'	'
Fair Value Of Assets And Liabilities Measured On Recurring Basis (Line Items)	'	'
Contingent consideration liability	$1,889	'

Balance_Sheet_Information_Inve

Balance Sheet Information - Inventories, Net (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$2,677	$3,038
Finished goods	3,500	3,759
Reserves	-994	-1,149
Total inventories, net	$5,183	$5,648

Balance_Sheet_Information_Defe

Balance Sheet Information - Deferred Costs (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Deferred Cost [Line Items]	'	'
Total deferred costs	$54,582	$50,279
Appliance [Member]	'	'
Deferred Cost [Line Items]	'	'
Total deferred costs	38,491	35,000
Commissions [Member]	'	'
Deferred Cost [Line Items]	'	'
Total deferred costs	$16,091	$15,279

Balance_Sheet_Information_Prop

Balance Sheet Information - Property and Equipment, Net (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$32,119	$28,382
Accumulated depreciation and amortization	-9,889	-7,824
Property and equipment, net	22,230	20,558
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	14,796	11,711
Vehicles, Machinery and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	2,685	2,462
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$2,989	$2,560

Balance_Sheet_Information_Addi

Balance Sheet Information - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization expense related to property and equipment	'	'	$4,422	$4,734
Property and equipment [Member]	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization expense related to property and equipment	$1,200	$800	$2,300	$1,600

Balance_Sheet_Information_Comp

Balance Sheet Information - Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	($817)	'
Other comprehensive income (loss) before reclassifications	'	'	-575	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	'	'
Other comprehensive income (loss)	-606	143	-575	-239
Ending balance	-1,392	'	-1,392	'
Foreign Currency Translation Adjustments [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	-817	'
Other comprehensive income (loss) before reclassifications	'	'	-575	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	'	'
Other comprehensive income (loss)	'	'	-575	'
Ending balance	-1,392	'	-1,392	'
Unrealized Gains (Losses) on Available-for-Sale Investments [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	'	'
Other comprehensive income (loss) before reclassifications	'	'	'	'
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	'	'
Other comprehensive income (loss)	'	'	'	'
Ending balance	'	'	'	'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (C2C Systems Limited [Member], USD $)	6 Months Ended
	Aug. 31, 2014
Business Acquisition [Line Items]	'
Consideration	$9,600,000
Contingent consideration payable upon attainment of certain billings levels and performance integration targets	4,900,000
Estimated fair value of contingent consideration	2,900,000
Contingent consideration payable description	'Upon the attainment of certain billings levels and performance integration targets through August 2017.
Weighted-average useful lives	'6 years 8 months 12 days
Goodwill deductible for income tax purpose	$0
Acquired Developed Technology [Member]	'
Business Acquisition [Line Items]	'
Weighted-average useful lives	'6 years 4 months 24 days
Customer Relationships [Member]	'
Business Acquisition [Line Items]	'
Weighted-average useful lives	'7 years 3 months 18 days
Trade Names [Member]	'
Business Acquisition [Line Items]	'
Weighted-average useful lives	'2 years

Acquisition_Schedule_of_Fair_V

Acquisition - Schedule of Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'	'
Goodwill	$41,025	$36,014
C2C Systems Limited [Member]	'	'
Business Acquisition [Line Items]	'	'
Cash	1,355	'
Net other tangible assets	290	'
Goodwill	5,376	'
Deferred revenue	-1,015	'
Deferred tax liability	-736	'
Total value of assets acquired and liabilities assumed	9,630	'
Acquired Developed Technology [Member] | C2C Systems Limited [Member]	'	'
Business Acquisition [Line Items]	'	'
Intangible assets	2,990	'
Customer Relationships [Member] | C2C Systems Limited [Member]	'	'
Business Acquisition [Line Items]	'	'
Intangible assets	1,340	'
Trade Names [Member] | C2C Systems Limited [Member]	'	'
Business Acquisition [Line Items]	'	'
Intangible assets	$30	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Balance at beginning of period	$36,014
Goodwill acquired	5,376
Effect of foreign exchange rates	-365
Balance at end of period	$41,025

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Detail) (USD $)	Aug. 31, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$40,599	$36,666
Accumulated Amortization	-30,243	-28,683
Net Carrying Value	10,356	7,983
Acquired Developed Technology [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	29,184	26,315
Accumulated Amortization	-22,517	-21,111
Net Carrying Value	6,667	5,204
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	8,677	7,463
Accumulated Amortization	-6,016	-5,794
Net Carrying Value	2,661	1,669
Patents [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,625	1,625
Accumulated Amortization	-965	-873
Net Carrying Value	660	752
Trade Names [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	513	663
Accumulated Amortization	-145	-305
Net Carrying Value	368	358
Acquired Developed Software [Member]	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	200	200
Accumulated Amortization	-200	-200
Net Carrying Value	'	'

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Feb. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'	'	'
Other intangible assets not subject to amortization	$296,000	'	$296,000	'	$437,000
Amortization expense	1,100,000	1,700,000	2,100,000	3,100,000	'
Amortization expense for the remainder of fiscal year 2015	1,400,000	'	1,400,000	'	'
Amortization expense for fiscal year 2016	2,400,000	'	2,400,000	'	'
Amortization expense for fiscal year 2017	2,200,000	'	2,200,000	'	'
Amortization expense for fiscal year 2018	1,900,000	'	1,900,000	'	'
Amortization expense for fiscal year 2019	1,000,000	'	1,000,000	'	'
Amortization expense thereafter	$1,600,000	'	$1,600,000	'	'

Stockholders_Equity_Deficit_Ad

Stockholders' Equity (Deficit) - Additional Information (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Aug. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Options granted are exercisable for periods	'10 years
Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Options and RSUs granted vesting period	'4 years
Unrecognized compensation cost related to outstanding stock options	19.1
Expected period for recognizing compensation expense	'2 years 10 months 21 days
Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Options and RSUs granted vesting period	'4 years
Expected period for recognizing compensation expense	'3 years
Unrecognized compensation cost related to unvested RSUs	20.6

Stockholders_Equity_Deficit_Sc

Stockholders' Equity (Deficit) - Schedule of Total Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$3,736	$2,631	$6,818	$5,128
Cost of Revenue [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	73	43	125	88
Research and Development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	902	635	1,650	1,265
Selling and Marketing [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	821	366	1,403	700
General and Administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$1,940	$1,587	$3,640	$3,075

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax (provision) benefit	$292	$1,089	($308)	$2,136

Segment_Information_Schedule_o

Segment Information - Schedule of Revenue by Geographic Region (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	$68,652	$57,790	$134,861	$114,067
North America [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	50,219	41,997	98,538	82,829
United States [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	47,234	39,291	92,564	77,528
Other [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	2,985	2,706	5,974	5,301
Latin America [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	786	961	1,595	1,936
Asia-Pacific [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	4,503	4,093	8,990	8,142
EMEA [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue	$13,144	$10,739	$25,738	$21,160

Net_Income_Loss_Per_Share_Calc

Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share Attributable to Barracuda Networks, Inc. (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Basic:	'	'	'	'
Net income (loss) attributable to Barracuda Networks, Inc.	$738	($2,175)	$889	($4,579)
Weighted-average shares used to compute net income (loss) per share, basic	51,667	28,182	51,412	28,141
Net income (loss) per share attributable to Barracuda Networks, Inc., basic	$0.01	($0.08)	$0.02	($0.16)
Diluted:	'	'	'	'
Net income (loss) attributable to Barracuda Networks, Inc.	$738	($2,175)	$889	($4,579)
Weighted-average shares used to compute net income (loss) per share, basic	51,667	28,182	51,412	28,141
Add weighted-average effect of dilutive securities:	'	'	'	'
Stock options and RSUs	2,076	'	2,263	'
Weighted-average shares used to compute net income (loss) per share, diluted	53,743	28,182	53,675	28,141
Net income (loss) per share attributable to Barracuda Networks, Inc., diluted	$0.01	($0.08)	$0.02	($0.16)