Barracuda Networks (CUDA) 10-Q 12 Jan 15 2015 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Nov. 30, 2014	Dec. 31, 2014
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	30-Nov-14
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Trading Symbol	CUDA
Entity Registrant Name	BARRACUDA NETWORKS INC
Entity Central Index Key	1348334
Current Fiscal Year End Date	-26
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		52,508,221

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$159,895	$135,879
Marketable securities	11,460
Accounts receivable, net of allowance for doubtful accounts of $1,337 and $2,134 as of November 30, 2014 and February 28, 2014, respectively	40,998	27,836
Inventories, net	5,137	5,648
Prepaid income taxes	1,751	1,147
Deferred costs	29,162	25,707
Deferred income taxes	35,975	30,156
Other current assets	4,293	3,753
Total current assets	288,671	230,126
Property and equipment, net	24,328	20,558
Deferred costs, non-current	26,952	24,572
Deferred income taxes, non-current	33,055	28,515
Other non-current assets	2,390	1,851
Intangible assets, net	9,873	8,420
Goodwill	40,571	36,014
Total assets	425,840	350,056
Current liabilities:
Accounts payable	13,839	13,743
Accrued payroll and related benefits	9,212	8,494
Other accrued liabilities	9,883	9,374
Deferred revenue	199,054	167,562
Deferred income taxes	291	260
Note payable	248	237
Total current liabilities	232,527	199,670
Long-term liabilities:
Deferred revenue, non-current	159,218	145,595
Deferred income taxes, non-current	939	84
Note payable, non-current	4,447	4,635
Other long-term liabilities	7,606	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 November 30, 2014 and February 28, 2014
Common stock, $0.001 par value; 1,000,000,000 shares authorized; 52,474,672 and 51,045,196 shares issued and outstanding as of November 30, 2014 and February 28, 2014, respectively	52	52
Additional paid-in capital	305,987	278,551
Accumulated other comprehensive loss	-2,348	-817
Accumulated deficit	-282,588	-283,441
Total stockholders' equity (deficit)	21,103	-5,655
Total liabilities and stockholders' equity (deficit)	$425,840	$350,056

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$1,337	$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	52,474,672	51,045,196
Common stock, shares outstanding	52,474,672	51,045,196

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, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Revenue:
Appliance	$20,692	$18,174	$62,204	$53,583
Subscription	49,715	41,212	143,064	119,870
Total revenue	70,407	59,386	205,268	173,453
Cost of revenue	14,438	14,017	42,888	40,498
Gross profit	55,969	45,369	162,380	132,955
Operating expenses:
Research and development	15,389	12,083	42,167	34,563
Sales and marketing	33,395	28,785	93,905	86,013
General and administrative	8,759	7,513	25,947	22,018
Total operating expenses	57,543	48,381	162,019	142,594
Income (loss) from operations	-1,574	-3,012	361	-9,639
Other income (expense), net	-1,789	121	-2,527	-329
Loss before income taxes and non-controlling interest	-3,363	-2,891	-2,166	-9,968
Benefit from income taxes	3,327	599	3,019	2,735
Consolidated net income (loss)	-36	-2,292	853	-7,233
Net loss attributable to non-controlling interest		199		561
Net income (loss) attributable to Barracuda Networks, Inc.	($36)	($2,093)	$853	($6,672)
Net income (loss) per share attributable to Barracuda Networks, Inc.:
Basic		($0.06)	$0.02	($0.22)
Diluted		($0.06)	$0.02	($0.22)
Weighted-average shares used to compute net income (loss) per share attributable to Barracuda Networks, Inc.:
Basic	52,142	34,256	51,655	30,179
Diluted	52,142	34,256	53,785	30,179

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to Barracuda Networks, Inc.	($36)	($2,093)	$853	($6,672)
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	-964	467	-1,539	433
Available-for-sale investments:
Change in net unrealized gains (losses) (net of tax effect of $5, $18, $5 and $113)	8	16	8	-189
Less: reclassification adjustment for net (gains) losses included in net income	0	0	0	0
Net change	8	16	8	-189
Other comprehensive income (loss)	-956	483	-1,531	244
Comprehensive loss attributable to Barracuda Networks, Inc.	($992)	($1,610)	($678)	($6,428)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Statement of Comprehensive Income [Abstract]
Change in net unrealized gains (losses), tax	$5	$18	$5	($113)

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Nov. 30, 2014	Nov. 30, 2013
Operating activities
Consolidated net income (loss)	$853,000	($7,233,000)
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:
Depreciation and amortization	6,540,000	7,115,000
Stock-based compensation	11,682,000	7,551,000
Excess tax benefits from equity incentive plan	-6,752,000	-374,000
Loss on disposal of property and equipment	97,000	296,000
Deferred income taxes	-10,197,000	-8,340,000
Other	107,000
Changes in operating assets and liabilities:
Accounts receivable, net	-12,785,000	-4,541,000
Inventories, net	507,000	-1,227,000
Income taxes, net	3,140,000	2,547,000
Deferred costs	-6,088,000	-8,801,000
Other current assets	-161,000	17,000
Other non-current assets	141,000	383,000
Accounts payable	-404,000	-2,307,000
Accrued payroll and related benefits	303,000	-1,429,000
Other accrued liabilities	1,787,000	1,211,000
Other long-term liabilities	57,000	331,000
Deferred revenue	44,247,000	37,477,000
Net cash provided by operating activities	33,074,000	22,676,000
Investing activities
Purchase of marketable securities	-11,488,000
Purchase of investment in non-marketable equity and debt securities	-1,100,000	-310,000
Purchase of property and equipment	-7,059,000	-5,857,000
Purchase of intangible assets	-38,000	-28,000
Business combinations, net of cash acquired	-4,791,000	-8,475,000
Net cash used in investing activities	-24,476,000	-14,670,000
Financing activities
Proceeds from issuance of common stock	12,560,000	1,929,000
Taxes paid related to net share settlement of equity awards	-3,854,000	-798,000
Dividends paid		-1,419,000
Repurchase of common stock		-723,000
Excess tax benefits from equity incentive plan	6,752,000	374,000
Repayment of employee loans, net of loans extended	771,000	1,743,000
Repayment of note payable	-177,000	-166,000
Net proceeds from initial public offering		78,257,000
Net cash provided by financing activities	16,052,000	79,197,000
Effect of exchange rate changes on cash and cash equivalents	-634,000	-49,000
Net increase in cash and cash equivalents	24,016,000	87,154,000
Cash and cash equivalents at beginning of period	135,879,000	30,095,000
Cash and cash equivalents at end of period	159,895,000	117,249,000
Non-cash financing and investing activities
Conversion of preferred stock into common stock		$167,554,000

Overview_and_Basis_of_Presenta

Overview and Basis of Presentation	9 Months Ended
	Nov. 30, 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.
	Initial Public Offering
	In November 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 $78.3 million, net of underwriting discounts and commissions and offering costs paid. 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.
	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 nine months ended November 30, 2014 are not necessarily indicative of the results expected for the full fiscal year. Our 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	9 Months Ended
	Nov. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Information	2. Balance Sheet Information
	Cash, Cash Equivalents and Marketable Securities
	The following table summarizes our cash, cash equivalents and marketable securities (in thousands):
		November 30,			February 28,
		2014			2014
	Cash and cash equivalents:
	Cash	$	76,446		$	41,331
	Money market funds		83,449			94,548
		$	159,895		$	135,879
	Marketable securities:
	Asset-backed securities	$	3,660		$	—
	Corporate debt securities		5,179			—
	Foreign government bonds		201			—
	Mortgage-backed securities		2,420			—
	Total	$	11,460		$	—
	The gross unrealized gains or losses on our marketable securities as of November 30, 2014 were not significant. In addition, there were no securities in a continuous loss position for 12 months or longer as of November 30, 2014.
	We periodically review our marketable securities for other-than-temporary impairment. We consider factors such as the near-term prospects of the investment in relation to the duration, severity and reason for the decline in value, the potential recovery period and our intent to sell. For marketable debt securities, we also consider whether (i) it is more likely than not that we will be required to sell the securities before recovery of their amortized cost bases and (ii) the amortized cost bases cannot be recovered as a result of credit losses. We do not intend to sell the investments and it is not more likely that we would be required to sell the investments before recovery of their amortized cost bases. As of November 30, 2014, we have not recognized any other-than-temporary impairment loss.
	The following table classifies our marketable debt securities by contractual maturities (in thousands):
		As of
		November 30,
		2014
	Due in 1 year	$	813
	Due in 1 year through 5 years		7,207
	Due in 5 years through 10 years		1,416
	Due after 10 years		2,024
		$	11,460
	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. Marketable securities are classified within Level 2 if the investments are valued using model driven valuations which use observable inputs such as quoted market prices, benchmark yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Marketable securities are held by custodians who obtain investment prices from a third-party pricing provider that incorporates standard inputs in various asset price models.
	We estimated the fair value of our Level 3 contingent consideration liability based on a weighted probability assessment of achieving the milestones associated with the contingent consideration 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. As of November 30, 2014, the change in fair value of our Level 3 contingent consideration liability was not material. 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):
		November 30, 2014
		Level 1			Level 2			Level 3			Total
	Cash equivalents:
	Money market funds	$	83,449		$	—		$	—		$	83,449
	Marketable securities:
	Asset-backed securities	$	—		$	3,660		$	—		$	3,660
	Corporate debt securities	$	—		$	5,179		$	—		$	5,179
	Foreign government bonds	$	—		$	201		$	—		$	201
	Mortgage-backed securities	$	—		$	2,420		$	—		$	2,420
	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):
		November 30,			February 28,
		2014			2014
	Raw materials	$	2,218		$	3,038
	Finished goods		3,774			3,759
	Reserves		(855	)		(1,149	)
		$	5,137		$	5,648
	Deferred Costs
	Deferred costs consisted of the following (in thousands):
		November 30,			February 28,
		2014			2014
	Appliance	$	39,757		$	35,000
Commissions		16,357			15,279
	$	56,114		$	50,279
Property and Equipment, Net
Property and equipment, net, consisted of the following (in thousands):
	November 30,			February 28,
	2014			2014
Land	$	6,503		$	5,100
Building		6,549			6,549
Computer hardware and software		16,012			11,711
Vehicles, machinery and equipment		3,402			2,462
Leasehold improvements		2,994			2,560
		35,460			28,382
Accumulated depreciation and amortization		(11,132	)		(7,824	)
	$	24,328		$	20,558
Depreciation and amortization expense related to property and equipment was $1.4 million and $3.7 million for the three and nine months ended November 30, 2014, respectively, and $1.1 million and $2.7 million for the three and nine months ended November 30, 2013, respectively.
Investment in Non-marketable Equity Security
In October 2011, we acquired stock in a privately held company for $750,000, which represented an ownership interest of approximately 24%. In October 2014, we acquired additional shares of stock in the privately held company for $500,000 to maintain our approximately 24% ownership interest. 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 each of the three and nine months ended November 30, 2014 and 2013, our proportionate share of the investee’s losses was not material. The investment is classified in other non-current assets in our condensed consolidated balance sheets.
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		(1,539	)		8			(1,531	)
Amounts reclassified from accumulated other comprehensive income (loss)		—			—			—
Other comprehensive income (loss)		(1,539	)		8			(1,531	)
Balance as of November 30, 2014	$	(2,356	)	$	8		$	(2,348	)

Acquisition

Acquisition	9 Months Ended
	Nov. 30, 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. Changes in the fair value of the contingent consideration liability subsequent to the acquisition date, such as changes in the probability assessment, are recognized in the period when the change in the estimated fair value occurs.
	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
	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	9 Months Ended
	Nov. 30, 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):
		November 30,
		2014
	Balance at February 28, 2014	$	36,014
	Goodwill acquired		5,376
	Effect of foreign exchange rates		(819	)
	Balance at November 30, 2014	$	40,571
	Intangible assets subject to amortization are summarized as follows (in thousands):
		November 30, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	29,073		$	(22,900	)	$	6,173
	Software license		400			(400	)		—
	Customer relationships		8,520			(6,084	)		2,436
	Patents		1,625			(1,012	)		613
	Trade names		513			(158	)		355
	Acquired developed software		200			(200	)		—
		$	40,331		$	(30,754	)	$	9,577
		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 November 30, 2014 and February 28, 2014, respectively.
	Amortization expense was $0.8 million and $2.9 million for the three and nine months ended November 30, 2014, respectively, and $1.3 million and $4.4 million for the three and nine months ended November 30, 2013, respectively.
	As of November 30, 2014, amortization expense for intangible assets in future periods was as follows: $0.6 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 $1.5 million thereafter.

Stockholders_Equity_Deficit

Stockholders' Equity (Deficit)	9 Months Ended
	Nov. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [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 typically vest over four years contingent upon employment or service with us through the vesting date.
	As of November 30, 2014, net of forecasted forfeitures, there was $22.2 million of unrecognized compensation cost related to outstanding stock options, expected to be recognized over a weighted-average period of 2.95 years and $29.8 million of unrecognized compensation cost related to unvested RSUs, expected to be recognized over a weighted-average period of 3.21 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 November 30,				Nine Months Ended November 30,
		2014		2013		2014		2013
	Cost of revenue	$	121	$	58	$	246	$	146
	Research and development		1,250		209		2,900		1,474
	Sales and marketing		1,143		578		2,546		1,278
	General and administrative		2,350		1,578		5,990		4,653
		$	4,864	$	2,423	$	11,682	$	7,551

Income_Taxes

Income Taxes	9 Months Ended
	Nov. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	6. Income Taxes
	For the three and nine months ended November 30, 2014, we recorded income tax benefits of $3.3 million and $3.0 million, respectively. For the three and nine months ended November 30, 2013, we recorded income tax benefits of $0.6 million and $2.7 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 stock-based compensation expense and various discrete items.

Segment_Information

Segment Information	9 Months Ended
	Nov. 30, 2014
Segment Reporting [Abstract]
Segment Information	7. Segment Information
	Revenue by geographic region is presented as follows (in thousands):
		Three Months Ended				Nine Months Ended
		November 30,				November 30,
		2014		2013		2014		2013
	North America	$	51,010	$	43,293	$	149,548	$	126,122
	United States		47,995		40,538		140,559		118,066
	Other		3,015		2,755		8,989		8,056
	Latin America		869		726		2,464		2,662
	Asia-Pacific		4,593		4,058		13,583		12,200
	EMEA		13,935		11,309		39,673		32,469
		$	70,407	$	59,386	$	205,268	$	173,453
	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	9 Months Ended
	Nov. 30, 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.
	We received a Proposed Charging Letter from BIS on August 21, 2014 (the “Letter”), which asserts certain export violations against us and our UK subsidiary. Based on discussions with BIS, we expect a one-time monetary penalty to be imposed, and do not currently expect any criminal charges, denial of export privileges or ongoing monitoring actions. As requested in the Letter, we have provided BIS with additional information regarding the proposed violations. We intend to continue cooperating with BIS in an effort to resolve this matter. However, given the early stage of our discussions, we are 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 December 31, 2014, Adaptive Data LLC filed a lawsuit against us in the U.S. District Court for the District of Delaware, Adaptive Data LLC v. Barracuda Networks, Inc., Case No. 1:99-mc-09999/1164, alleging that certain of our appliances infringe U.S. patent numbers 6,108,347 and 6,243,391. We have not yet responded to the complaint, and 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	9 Months Ended
	Nov. 30, 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						Nine Months Ended
		November 30,						November 30,
		2014			2013			2014		2013
	Basic:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	(36	)	$	(2,093	)	$	853	$	(6,672	)
	Weighted-average shares used to compute net income (loss) per share, basic		52,142			34,256			51,655		30,179
	Net income (loss) per share attributable to Barracuda Networks, Inc., basic	$	—		$	(0.06	)	$	0.02	$	(0.22	)
	Diluted:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	(36	)	$	(2,093	)	$	853	$	(6,672	)
	Weighted-average shares used to compute net income (loss) per share, basic		52,142			34,256			51,655		30,179
	Add weighted-average effect of dilutive securities:
	Stock options and RSUs		—			—			2,130		—
	Weighted-average shares used to compute net income (loss) per share, diluted		52,142			34,256			53,785		30,179
	Net income (loss) per share attributable to Barracuda Networks, Inc., diluted	$	—		$	(0.06	)	$	0.02	$	(0.22	)

Overview_and_Basis_of_Presenta1

Overview and Basis of Presentation (Policies)	9 Months Ended
	Nov. 30, 2014
Accounting Policies [Abstract]
Initial Public Offering	Initial Public Offering
	In November 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 $78.3 million, net of underwriting discounts and commissions and offering costs paid. 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.
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 nine months ended November 30, 2014 are not necessarily indicative of the results expected for the full fiscal year. Our 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.
Marketable Securities	We periodically review our marketable securities for other-than-temporary impairment. We consider factors such as the near-term prospects of the investment in relation to the duration, severity and reason for the decline in value, the potential recovery period and our intent to sell. For marketable debt securities, we also consider whether (i) it is more likely than not that we will be required to sell the securities before recovery of their amortized cost bases and (ii) the amortized cost bases cannot be recovered as a result of credit losses. We do not intend to sell the investments and it is not more likely that we would be required to sell the investments before recovery of their amortized cost bases. As of November 30, 2014, we have not recognized any other-than-temporary impairment loss.
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. Marketable securities are classified within Level 2 if the investments are valued using model driven valuations which use observable inputs such as quoted market prices, benchmark yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency. Marketable securities are held by custodians who obtain investment prices from a third-party pricing provider that incorporates standard inputs in various asset price models.
	We estimated the fair value of our Level 3 contingent consideration liability based on a weighted probability assessment of achieving the milestones associated with the contingent consideration 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. As of November 30, 2014, the change in fair value of our Level 3 contingent consideration liability was not material. Refer to Note 3 to Condensed Consolidated Financial Statements for further information.
Investment in Non-marketable Equity Security	Investment in Non-marketable Equity Security
	In October 2011, we acquired stock in a privately held company for $750,000, which represented an ownership interest of approximately 24%. In October 2014, we acquired additional shares of stock in the privately held company for $500,000 to maintain our approximately 24% ownership interest. 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.
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)	9 Months Ended
	Nov. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash, Cash Equivalents and Marketable Securities	The following table summarizes our cash, cash equivalents and marketable securities (in thousands):
		November 30,			February 28,
		2014			2014
	Cash and cash equivalents:
	Cash	$	76,446		$	41,331
	Money market funds		83,449			94,548
		$	159,895		$	135,879
	Marketable securities:
	Asset-backed securities	$	3,660		$	—
	Corporate debt securities		5,179			—
	Foreign government bonds		201			—
	Mortgage-backed securities		2,420			—
	Total	$	11,460		$	—
Schedule of Marketable Debt Securities	The following table classifies our marketable debt securities by contractual maturities (in thousands):
		As of
		November 30,
		2014
	Due in 1 year	$	813
	Due in 1 year through 5 years		7,207
	Due in 5 years through 10 years		1,416
	Due after 10 years		2,024
		$	11,460
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):
		November 30, 2014
		Level 1			Level 2			Level 3			Total
	Cash equivalents:
	Money market funds	$	83,449		$	—		$	—		$	83,449
	Marketable securities:
	Asset-backed securities	$	—		$	3,660		$	—		$	3,660
	Corporate debt securities	$	—		$	5,179		$	—		$	5,179
	Foreign government bonds	$	—		$	201		$	—		$	201
	Mortgage-backed securities	$	—		$	2,420		$	—		$	2,420
	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):
		November 30,			February 28,
		2014			2014
	Raw materials	$	2,218		$	3,038
	Finished goods		3,774			3,759
	Reserves		(855	)		(1,149	)
		$	5,137		$	5,648
Deferred Costs	Deferred costs consisted of the following (in thousands):
		November 30,			February 28,
		2014			2014
	Appliance	$	39,757		$	35,000
	Commissions		16,357			15,279
		$	56,114		$	50,279
Property and Equipment, Net	Property and equipment, net, consisted of the following (in thousands):
		November 30,			February 28,
		2014			2014
	Land	$	6,503		$	5,100
	Building		6,549			6,549
	Computer hardware and software		16,012			11,711
	Vehicles, machinery and equipment		3,402			2,462
	Leasehold improvements		2,994			2,560
			35,460			28,382
	Accumulated depreciation and amortization		(11,132	)		(7,824	)
		$	24,328		$	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		(1,539	)		8			(1,531	)
	Amounts reclassified from accumulated other comprehensive income (loss)		—			—			—
	Other comprehensive income (loss)		(1,539	)		8			(1,531	)
	Balance as of November 30, 2014	$	(2,356	)	$	8		$	(2,348	)

Acquisition_Tables

Acquisition (Tables)	9 Months Ended
	Nov. 30, 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)	9 Months Ended
	Nov. 30, 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):
		November 30,
		2014
	Balance at February 28, 2014	$	36,014
	Goodwill acquired		5,376
	Effect of foreign exchange rates		(819	)
	Balance at November 30, 2014	$	40,571
Schedule of Intangible Assets Subject to Amortization	Intangible assets subject to amortization are summarized as follows (in thousands):
		November 30, 2014
		Gross			Accumulated			Net
		Carrying			Amortization			Carrying
		Amount						Value
	Acquired developed technology	$	29,073		$	(22,900	)	$	6,173
	Software license		400			(400	)		—
	Customer relationships		8,520			(6,084	)		2,436
	Patents		1,625			(1,012	)		613
	Trade names		513			(158	)		355
	Acquired developed software		200			(200	)		—
		$	40,331		$	(30,754	)	$	9,577
		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)	9 Months Ended
	Nov. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [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,
		2014		2013		2014		2013
	Cost of revenue	$	121	$	58	$	246	$	146
	Research and development		1,250		209		2,900		1,474
	Sales and marketing		1,143		578		2,546		1,278
	General and administrative		2,350		1,578		5,990		4,653
		$	4,864	$	2,423	$	11,682	$	7,551

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Nov. 30, 2014
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,
		2014		2013		2014		2013
	North America	$	51,010	$	43,293	$	149,548	$	126,122
	United States		47,995		40,538		140,559		118,066
	Other		3,015		2,755		8,989		8,056
	Latin America		869		726		2,464		2,662
	Asia-Pacific		4,593		4,058		13,583		12,200
	EMEA		13,935		11,309		39,673		32,469
		$	70,407	$	59,386	$	205,268	$	173,453

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Nov. 30, 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						Nine Months Ended
		November 30,						November 30,
		2014			2013			2014		2013
	Basic:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	(36	)	$	(2,093	)	$	853	$	(6,672	)
	Weighted-average shares used to compute net income (loss) per share, basic		52,142			34,256			51,655		30,179
	Net income (loss) per share attributable to Barracuda Networks, Inc., basic	$	—		$	(0.06	)	$	0.02	$	(0.22	)
	Diluted:
	Net income (loss) attributable to Barracuda Networks, Inc.	$	(36	)	$	(2,093	)	$	853	$	(6,672	)
	Weighted-average shares used to compute net income (loss) per share, basic		52,142			34,256			51,655		30,179
	Add weighted-average effect of dilutive securities:
	Stock options and RSUs		—			—			2,130		—
	Weighted-average shares used to compute net income (loss) per share, diluted		52,142			34,256			53,785		30,179
	Net income (loss) per share attributable to Barracuda Networks, Inc., diluted	$	—		$	(0.06	)	$	0.02	$	(0.22	)

Overview_and_Basis_of_Presenta2

Overview and Basis of Presentation - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended
	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Organization And Summary Of Significant Accounting Policies [Line Items]
Issuance of stock, net of offering costs, Shares	4,761,000
Initial public offering, share price	$18		$18
Proceeds from IPO	$78,257,000		$78,257,000
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
Underwriters [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Issuance of stock, net of offering costs, Shares	621,000

Balance_Sheet_Information_Cash

Balance Sheet Information - Cash, Cash Equivalents and Marketable Securities (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014	Nov. 30, 2013	Feb. 28, 2013
In Thousands, unless otherwise specified
Cash and cash equivalents:
Cash	$76,446	$41,331
Money market funds	83,449	94,548
Total cash and cash equivalents	159,895	135,879	117,249	30,095
Marketable securities:
Marketable debt securities	11,460
Asset-backed securities [Member]
Marketable securities:
Marketable debt securities	3,660
Corporate debt securities [Member]
Marketable securities:
Marketable debt securities	5,179
Foreign government bonds [Member]
Marketable securities:
Marketable debt securities	201
Mortgage-backed securities [Member]
Marketable securities:
Marketable debt securities	$2,420

Balance_Sheet_Information_Addi

Balance Sheet Information - Additional Information (Detail) (USD $)	1 Months Ended		9 Months Ended		3 Months Ended
	Oct. 31, 2014	Oct. 31, 2011	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
			Securities
Property, Plant and Equipment [Line Items]
Number of securities in a continuous loss position for 12 months or longer			0		0
Recognized other-than-temporary impairment loss			$0
Depreciation and amortization expense related to property and equipment			6,540,000	7,115,000
Investment to acquire equity	500,000	750,000
Percentage of ownership interest	24.00%	24.00%
Property and equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense related to property and equipment			$3,700,000	$2,700,000	$1,400,000	$1,100,000

Balance_Sheet_Information_Sche

Balance Sheet Information - Schedule of Marketable Debt Securities (Detail) (USD $)	Nov. 30, 2014
In Thousands, unless otherwise specified
Available-for-sale Securities [Abstract]
Due in 1 year	$813
Due in 1 year through 5 years	7,207
Due in 5 years through 10 years	1,416
Due after 10 years	2,024
Total	$11,460

Balance_Sheet_Information_Summ

Balance Sheet Information - Summary of Assets or Liabilities Measured at Fair Value (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$11,460
Contingent consideration liability (current)	1,035
Contingent consideration liability	1,889
Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	83,449	94,548
Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	3,660
Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	5,179
Foreign government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	201
Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	2,420
Level 1 [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	83,449	94,548
Level 2 [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	3,660
Level 2 [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	5,179
Level 2 [Member] | Foreign government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	201
Level 2 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	2,420
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability (current)	1,035
Contingent consideration liability	$1,889

Balance_Sheet_Information_Inve

Balance Sheet Information - Inventories, Net (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Raw materials	$2,218	$3,038
Finished goods	3,774	3,759
Reserves	-855	-1,149
Total inventories, net	$5,137	$5,648

Balance_Sheet_Information_Defe

Balance Sheet Information - Deferred Costs (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Deferred Cost [Line Items]
Total deferred costs	$56,114	$50,279
Appliance [Member]
Deferred Cost [Line Items]
Total deferred costs	39,757	35,000
Commissions [Member]
Deferred Cost [Line Items]
Total deferred costs	$16,357	$15,279

Balance_Sheet_Information_Prop

Balance Sheet Information - Property and Equipment, Net (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$35,460	$28,382
Accumulated depreciation and amortization	-11,132	-7,824
Property and equipment, net	24,328	20,558
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,503	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	16,012	11,711
Vehicles, Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,402	2,462
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$2,994	$2,560

Balance_Sheet_Information_Comp

Balance Sheet Information - Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			($817)
Other comprehensive income (loss) before reclassifications			-1,531
Amounts reclassified from accumulated other comprehensive income (loss)			0
Other comprehensive income (loss)	-956	483	-1,531	244
Ending balance	-2,348		-2,348
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			-817
Other comprehensive income (loss) before reclassifications			-1,539
Amounts reclassified from accumulated other comprehensive income (loss)			0
Other comprehensive income (loss)			-1,539
Ending balance	-2,356		-2,356
Unrealized Gains (Losses) on Available-for-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications			8
Amounts reclassified from accumulated other comprehensive income (loss)			0
Other comprehensive income (loss)			8
Ending balance	$8		$8

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (C2C Systems Limited [Member], USD $)	1 Months Ended	9 Months Ended
	Aug. 31, 2014	Nov. 30, 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 $)	Nov. 30, 2014	Feb. 28, 2014	Aug. 31, 2014
In Thousands, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$40,571	$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 $)	9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Balance at beginning of period	$36,014
Goodwill acquired	5,376
Effect of foreign exchange rates	-819
Balance at end of period	$40,571

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Detail) (USD $)	Nov. 30, 2014	Feb. 28, 2014
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$40,331	$36,666
Accumulated Amortization	-30,754	-28,683
Net Carrying Value	9,577	7,983
Acquired Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,073	26,315
Accumulated Amortization	-22,900	-21,111
Net Carrying Value	6,173	5,204
Software License [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	400	400
Accumulated Amortization	-400	-400
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,520	7,463
Accumulated Amortization	-6,084	-5,794
Net Carrying Value	2,436	1,669
Patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,625	1,625
Accumulated Amortization	-1,012	-873
Net Carrying Value	613	752
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	513	663
Accumulated Amortization	-158	-305
Net Carrying Value	355	358
Acquired Developed Software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	200	200
Accumulated Amortization	($200)	($200)

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 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	800,000	1,300,000	2,900,000	4,400,000
Amortization expense for the remainder of fiscal year 2015	600,000		600,000
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	$1,500,000		$1,500,000

Stockholders_Equity_Deficit_Ad

Stockholders' Equity (Deficit) - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Nov. 30, 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	22.2
Expected period for recognizing compensation expense	2 years 11 months 12 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 2 months 16 days
Unrecognized compensation cost related to unvested RSUs	29.8

Stockholders_Equity_Deficit_Sc

Stockholders' Equity (Deficit) - Schedule of Total Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$4,864	$2,423	$11,682	$7,551
Cost of Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	121	58	246	146
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,250	209	2,900	1,474
Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,143	578	2,546	1,278
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$2,350	$1,578	$5,990	$4,653

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Income Tax Disclosure [Abstract]
Income tax benefits	$3,327	$599	$3,019	$2,735

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, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$70,407	$59,386	$205,268	$173,453
North America [Member]
Segment Reporting Information [Line Items]
Revenue	51,010	43,293	149,548	126,122
United States [Member]
Segment Reporting Information [Line Items]
Revenue	47,995	40,538	140,559	118,066
Other [Member]
Segment Reporting Information [Line Items]
Revenue	3,015	2,755	8,989	8,056
Latin America [Member]
Segment Reporting Information [Line Items]
Revenue	869	726	2,464	2,662
Asia-Pacific [Member]
Segment Reporting Information [Line Items]
Revenue	4,593	4,058	13,583	12,200
EMEA [Member]
Segment Reporting Information [Line Items]
Revenue	$13,935	$11,309	$39,673	$32,469

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		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Basic:
Net income (loss) attributable to Barracuda Networks, Inc.	($36)	($2,093)	$853	($6,672)
Weighted-average shares used to compute net income (loss) per share, basic	52,142	34,256	51,655	30,179
Net income (loss) per share attributable to Barracuda Networks, Inc., basic		($0.06)	$0.02	($0.22)
Diluted:
Net income (loss) attributable to Barracuda Networks, Inc.	($36)	($2,093)	$853	($6,672)
Weighted-average shares used to compute net income (loss) per share, basic	52,142	34,256	51,655	30,179
Add weighted-average effect of dilutive securities:
Stock options and RSUs			2,130
Weighted-average shares used to compute net income (loss) per share, diluted	52,142	34,256	53,785	30,179
Net income (loss) per share attributable to Barracuda Networks, Inc., diluted		($0.06)	$0.02	($0.22)