Barracuda Networks (CUDA) 10-Q 9 Jan 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Nov. 30, 2016	Dec. 31, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Nov. 30, 2016
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	CUDA
Entity Registrant Name	BARRACUDA NETWORKS INC
Entity Central Index Key	1,348,334
Current Fiscal Year End Date	--02-28
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		52,776,391

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Current assets:
Cash and cash equivalents	$ 121,113	$ 118,654
Marketable securities	73,220	36,394
Accounts receivable, net of allowance for doubtful accounts of $2,738 and $2,018 as of November 30, 2016 and February 29, 2016, respectively	39,555	36,520
Inventories, net	4,711	5,648
Prepaid income taxes	7,511	7,645
Deferred costs	32,076	31,943
Other current assets	4,990	4,805
Total current assets	283,176	241,609
Property and equipment, net	29,429	31,910
Deferred costs, non-current	26,475	27,019
Deferred income taxes, non-current	2,759	2,992
Other non-current assets	8,158	7,293
Intangible assets, net	33,904	39,386
Goodwill	69,817	69,595
Total assets	453,718	419,804
Current liabilities:
Accounts payable	11,288	15,939
Accrued payroll and related benefits	14,020	12,371
Other accrued liabilities	20,079	19,495
Deferred revenue	237,433	235,411
Note payable	4,184	268
Total current liabilities	287,004	283,484
Long-term liabilities:
Deferred revenue, non-current	163,867	157,363
Deferred income taxes, non-current	2,472	2,478
Note payable, non-current	0	4,115
Other long-term liabilities	5,332	4,462
Commitments and contingencies (Note 9)
Stockholders’ deficit:
Preferred stock, $0.001 par value; 20,000,000 shares authorized; zero shares issued and outstanding as of November 30, 2016 and February 29, 2016	0	0
Common stock, $0.001 par value; 1,000,000,000 shares authorized; 52,748,541 and 52,135,194 shares issued and outstanding as of November 30, 2016 and February 29, 2016, respectively	53	52
Additional paid-in capital	362,204	337,439
Accumulated other comprehensive loss	(5,088)	(4,509)
Accumulated deficit	(362,126)	(365,080)
Total stockholders’ deficit	(4,957)	(32,098)
Total liabilities and stockholders’ deficit	$ 453,718	$ 419,804

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Statement of Financial Position [Abstract]
Account receivable, allowance for doubtful accounts	$ 2,738	$ 2,018
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
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 (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	52,748,541	52,135,194
Common stock, shares outstanding	52,748,541	52,135,194

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Revenue:
Appliance	$ 20,457	$ 21,655	$ 62,824	$ 67,625
Subscription	68,349	58,432	200,566	168,807
Total revenue	88,806	80,087	263,390	236,432
Cost of revenue	21,098	18,352	61,579	50,253
Gross profit	67,708	61,735	201,811	186,179
Operating expenses:
Research and development	18,627	18,629	56,280	54,131
Sales and marketing	33,368	36,218	96,842	104,820
General and administrative	10,217	14,872	31,958	36,340
Total operating expenses	62,212	69,719	185,080	195,291
Income (loss) from operations	5,496	(7,984)	16,731	(9,112)
Other income (expense), net	(2,374)	(395)	131	(866)
Income (loss) before income taxes	3,122	(8,379)	16,862	(9,978)
Benefit from (provision for) income taxes	(1,329)	6,793	(9,848)	2,321
Net income (loss)	$ 1,793	$ (1,586)	$ 7,014	$ (7,657)
Net income (loss) per share:
Basic (in usd per share)	$ 0.03	$ (0.03)	$ 0.13	$ (0.14)
Diluted (in usd per share)	$ 0.03	$ (0.03)	$ 0.13	$ (0.14)
Weighted-average shares used to compute net income (loss) per share:
Basic (in shares)	52,457	53,268	52,336	53,178
Diluted (in shares)	53,995	53,268	53,391	53,178

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,793	$ (1,586)	$ 7,014	$ (7,657)
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	493	(710)	119	(386)
Available-for-sale investments:
Change in net unrealized gains (losses) (net of tax effect of $0, $0, $0 and $0)	(339)	(77)	31	1,045
Less: reclassification adjustment for net gains (losses) included in net income (loss) (net of tax effect of $(1), $3, $393 and $5)	3	(6)	(729)	(8)
Net change	(336)	(83)	(698)	1,037
Other comprehensive income (loss)	157	(793)	(579)	651
Comprehensive income (loss)	$ 1,950	$ (2,379)	$ 6,435	$ (7,006)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Statement of Comprehensive Income [Abstract]
Change in net unrealized gains (losses) (net of tax effect of $0, $0, $0 and $0)	$ 0	$ 0	$ 0	$ 0
Less: reclassification adjustment for net gains (losses) included in net income (loss) (net of tax effect of $(1), $3, $393 and $5)	$ (1)	$ 3	$ 393	$ 5

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
Operating activities
Net income (loss)	$ 7,014	$ (7,657)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and impairment expense	12,442	7,927
Stock-based compensation expense	25,050	21,416
Excess tax benefits from equity compensation plans	(2,023)	(3,390)
Deferred income taxes	391	(3,927)
Other	(555)	894
Changes in operating assets and liabilities:
Accounts receivable, net	(3,054)	(1,073)
Inventories, net	931	(1,664)
Income taxes, net	3,138	883
Deferred costs	567	(1,497)
Other assets	(469)	(1,799)
Accounts payable	(4,889)	(1,677)
Accrued payroll and related benefits	898	3,721
Other liabilities	(646)	3,780
Deferred revenue	8,916	17,934
Net cash provided by operating activities	47,711	33,871
Investing activities
Purchases of marketable securities	(59,561)	(19,040)
Proceeds from the sale of marketable securities	11,530	9,202
Proceeds from the maturity of marketable securities	13,590	14,527
Purchases of non-marketable investments	(636)	(1,400)
Purchases of property and equipment	(4,265)	(5,500)
Purchases of intangible assets	(1,374)	0
Business combinations, net of cash acquired	(243)	(56,862)
Net cash used in investing activities	(40,959)	(59,073)
Financing activities
Proceeds from issuance of common stock	7,425	4,712
Taxes paid related to net share settlement of equity awards	(6,003)	(5,969)
Excess tax benefits from equity compensation plans	2,023	3,390
Employee loans extended, net of repayment	(122)	(2,488)
Repayment of note payable	(200)	(221)
Repurchases of common stock	(7,241)	(8,000)
Other	0	(255)
Net cash used in financing activities	(4,118)	(8,831)
Effect of exchange rate changes on cash and cash equivalents	(175)	(267)
Net increase (decrease) in cash and cash equivalents	2,459	(34,300)
Cash and cash equivalents at beginning of period	118,654	151,373
Cash and cash equivalents at end of period	$ 121,113	$ 117,073

Overview and Basis of Presentat

Overview and Basis of Presentation	9 Months Ended
	Nov. 30, 2016
Accounting Policies [Abstract]
Overview and Basis of Presentation	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 data protection solutions. We offer cloud-enabled 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 and such differences could be material to our condensed consolidated financial position and results of operations. 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, 2016 are not necessarily indicative of the results expected for the full fiscal year. The condensed consolidated balance sheet as of February 29, 2016 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 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 29, 2016 . Foreign Currency For those subsidiaries whose functional currency is not the U.S. dollar, assets and liabilities are translated into U.S. dollar equivalents at the exchange rate in effect on the balance sheet date and revenues and expenses are translated into U.S. dollars using the average exchange rate over the period. Resulting currency translation adjustments are recorded in accumulated other comprehensive loss in our condensed consolidated balance sheets. We recorded net losses resulting from foreign exchange transactions of $2.4 million and $1.0 million for the three and nine months ended November 30, 2016 , respectively, and $0.4 million and $0.9 million for the three and nine months ended November 30, 2015 , respectively, which were reflected as a component of other income (expense), net in our condensed consolidated statements of operations. We have foreign subsidiaries that operate and sell our products in various markets around the world. As a result, we are exposed to foreign exchange risks. We utilize foreign exchange forward contracts to manage foreign currency risk associated with foreign currency denominated monetary assets and liabilities, primarily trade receivables, and to reduce the volatility of earnings and cash flows related to foreign currency transactions. The fair values of our contracts as of November 30, 2016 and February 29, 2016 were not significant. The change in the fair value of these foreign currency forward contracts is recorded as gains (losses) in other income (expense), net in our condensed consolidated statements of operations. Recent Accounting Pronouncements In November 2016, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update No. 2016-18 ("ASU 2016-18"), which requires a statement of cash flows to explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and early adoption is permitted, including in an interim period. If early adopted in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. ASU 2016-18 is to be applied through a retrospective transition method to each period presented. We are currently evaluating the timing of adoption and do not expect the adoption of ASU 2016-18 to have a material impact on our condensed consolidated statements of cash flows. In October 2016, the FASB issued Accounting Standards Update No. 2016-17 ("ASU 2016-17") to amend Accounting Standards Update No. 2015-02 ("ASU 2015-02"), Consolidation (Topic 810): Amendments to the Consolidation Analysis, which addresses how a reporting entity that is the single decision maker of a variable interest entity ("VIE") should treat indirect interests in the entity held through related parties that are under common control with the reporting entity when determining whether it is the primary beneficiary of that VIE. ASU 2016-17 is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. While early adoption is permitted, we do not intend to early adopt ASU 2016-17. Since we adopted ASU 2015-02 in fiscal 2016, ASU 2016-17 is to be applied retrospectively to all relevant prior periods beginning with the first quarter of fiscal 2016. We do not expect the adoption of ASU 2016-17 to have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued Accounting Standards Update No. 2016-15 ("ASU 2016-15") which addresses eight cash flow classification issues. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and early adoption is permitted, including in an interim period. If early adopted in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. Early adoption requires the adoption of all the amendments in the same period. ASU 2016-15 is to be applied through a retrospective transition method to each period presented. If it is impracticable to apply retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. We are currently evaluating the timing and the impact of adopting ASU 2016-15 on our condensed consolidated statements of cash flows. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") which requires measurement and recognition of expected credit losses for financial assets held. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years, and early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. ASU 2016-13 is to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. We are currently evaluating the timing and the impact of adopting ASU 2016-13 on our condensed consolidated financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-09 ("ASU 2016-09") to simplify employee shared-based payment accounting. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. While early adoption is permitted, we do not intend to early adopt ASU 2016-09. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, and forfeitures should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term should be applied prospectively. An entity may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. We are currently evaluating the impact of adopting ASU 2016-09 on our condensed consolidated financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-07 ("ASU 2016-07") to eliminate the requirement to retroactively adopt the equity method of accounting for an investment that qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence. ASU 2016-07 requires that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. For an available-for-sale equity security that becomes qualified for the equity method of accounting, an entity is required to recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income (loss) at the date the investment becomes qualified for use of the equity method. ASU 2016-07 is effective for fiscal years beginning after December 15, 2016 and interim periods within those years. While early adoption is permitted, we do not intend to early adopt ASU 2016-07. ASU 2016-07 is to be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. We do not expect the adoption of ASU 2016-07 to have a material impact on our condensed consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02 ("Topic 842") to amend lease accounting requirements and requires entities to generally recognize on the balance sheet operating and financing lease liabilities and corresponding right-of-use assets. Topic 842 will require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Topic 842 is effective for fiscal years beginning after December 15, 2018 and interim periods within those years, and early adoption is permitted. Topic 842 is to be applied using a modified retrospective approach and includes a number of optional practical expedients that entities may elect to apply. We are currently evaluating the timing and the impact of adopting Topic 842 on our condensed consolidated financial statements and expect that most of our operating lease commitments will be subject to Topic 842 and recognized as operating lease liabilities and right-of-use assets upon the adoption. In January 2016, the FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") to enhance the reporting model for financial instruments by amending certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017 and interim periods within those years. Early application to financial statements of fiscal years or interim periods that have not yet been issued is permitted by presenting separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk if we elected to measure the liability at fair value in accordance with the fair value option for financial instruments, otherwise, early adoption is not permitted. ASU 2016-01 is to be applied with a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption. We are currently evaluating the impact of adopting ASU 2016-01 on our condensed consolidated financial statements. In May 2014, the FASB issued Accounting Standards Update No. 2014-09 ("Topic 606") which completed the joint effort by the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and improving financial reporting. Topic 606 also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. The FASB issued subsequent amendments to the initial guidance collectively under Topic 606. Topic 606 supersedes nearly all existing revenue recognition guidance under GAAP. The core principle of Topic 606 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. Topic 606 defines a five-step process to achieve this core principle, and more judgment and estimates may be required under the Topic 606 revenue recognition process than are required under existing GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation, among others. Topic 606 is required to be effective for us as of the first quarter of fiscal 2019. While we are allowed to early adopt as of the first quarter of fiscal 2018, we do not intend to early adopt Topic 606. Topic 606 allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying Topic 606 recognized at the date of initial application. We are currently evaluating the adoption method and the impact of adopting Topic 606 on our condensed consolidated financial statements, including the effect on our operating results and our accounting for deferred commission balances.

Balance Sheet Information

Balance Sheet Information	9 Months Ended
	Nov. 30, 2016
Balance Sheet Information [Abstract]
Balance Sheet Information	Balance Sheet Information Cash, Cash Equivalents and Marketable Securities The following table summarizes our cash and cash equivalents by category (in thousands): As of November 30, 2016 As of February 29, 2016 Cash $ 96,173 $ 60,252 Money market funds 24,940 58,402 $ 121,113 $ 118,654 The following tables summarize our marketable securities by category (in thousands): As of November 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Asset-backed securities $ 9,762 $ 11 $ (16 ) $ 9,757 Corporate debt securities 39,763 5 (207 ) 39,561 Foreign government bonds 201 — (1 ) 200 Mortgage-backed securities 3,631 — (21 ) 3,610 U.S. government agency securities 11,545 — (66 ) 11,479 U.S. government notes 8,637 3 (27 ) 8,613 $ 73,539 $ 19 $ (338 ) $ 73,220 As of February 29, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Asset-backed securities $ 4,717 $ 9 $ (3 ) $ 4,723 Corporate debt securities 19,135 11 (22 ) 19,124 Equity securities 3,095 380 — 3,475 Foreign government bonds 205 — — 205 Mortgage-backed securities 2,341 — (13 ) 2,328 U.S. government agency securities 2,242 6 (14 ) 2,234 U.S. government notes 4,279 26 — 4,305 $ 36,014 $ 432 $ (52 ) $ 36,394 We use the specific-identification method to determine any realized gains or losses from the sale of our marketable securities classified as available-for-sale. For the three and nine months ended November 30, 2016 , we realized gross gains of zero and $1.1 million , respectively, and insignificant amounts of gross losses. For the three and nine months ended November 30, 2015 , realized gains and losses were insignificant. We reflect these gains and losses as a component of other income (expense), net in our condensed consolidated statements of operations. The following tables present gross unrealized losses and fair values for those marketable securities that were in an unrealized loss position aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in thousands): As of November 30, 2016 Less Than 12 Months 12 Months or Greater Total Fair Unrealized Fair Value Unrealized Fair Value Unrealized Asset-backed securities $ 4,961 $ (16 ) $ — $ — $ 4,961 $ (16 ) Corporate debt securities 35,020 (206 ) 1,200 (1 ) 36,220 (207 ) Foreign government bonds 200 (1 ) — — 200 (1 ) Mortgage-backed securities 3,282 (21 ) — — 3,282 (21 ) U.S. government agency securities 11,048 (64 ) 283 (2 ) 11,331 (66 ) U.S. government notes 7,886 (27 ) — — 7,886 (27 ) $ 62,397 $ (335 ) $ 1,483 $ (3 ) $ 63,880 $ (338 ) As of February 29, 2016 Less Than 12 Months 12 Months or Greater Total Fair Unrealized Fair Value Unrealized Fair Value Unrealized Asset-backed securities $ 1,788 $ (3 ) $ — $ — $ 1,788 $ (3 ) Corporate debt securities 12,088 (22 ) — — 12,088 (22 ) Mortgage-backed securities 1,746 (8 ) 385 (5 ) 2,131 (13 ) U.S. government agency securities 887 (10 ) 622 (4 ) 1,509 (14 ) $ 16,509 $ (43 ) $ 1,007 $ (9 ) $ 17,516 $ (52 ) We periodically review our marketable securities for other-than-temporary impairment. We consider factors such as the duration, severity and the reason for the decline in value, the potential recovery period and whether we intend 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 debt securities before recovery of their amortized cost basis and (ii) the amortized cost basis cannot be recovered as a result of credit losses. Unrealized losses related to these investments are due to interest rate fluctuations as opposed to changes in credit quality. We do not intend to sell and it is not more likely than not that we would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity. As of November 30, 2016 , we have recognized no other-than-temporary impairment loss. The following table summarizes the estimated fair value of our investments in marketable debt securities by contractual maturities (in thousands): As of November 30, 2016 Due in 1 year $ 10,394 Due in 1 year through 5 years 54,828 Due in 5 years through 10 years 3,326 Due after 10 years 4,672 $ 73,220 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 and marketable equity securities are classified within Level 1 because they are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs. Marketable debt securities and derivative assets 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. Our 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 liabilities based on a weighted probability assessment of achieving the milestones related to certain of our acquisitions. 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. Financial assets measured at fair value on a recurring basis are summarized below (in thousands): As of November 30, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 24,940 $ — $ — $ 24,940 Marketable securities: Asset-backed securities $ — $ 9,757 $ — $ 9,757 Corporate debt securities $ — $ 39,561 $ — $ 39,561 Foreign government bonds $ — $ 200 $ — $ 200 Mortgage-backed securities $ — $ 3,610 $ — $ 3,610 U.S. government agency securities $ — $ 11,479 $ — $ 11,479 U.S. government notes $ — $ 8,613 $ — $ 8,613 Other accrued liabilities (current): Contingent consideration $ — $ — $ 1,160 $ 1,160 Other long-term liabilities: Contingent consideration $ — $ — $ 161 $ 161 As of February 29, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 58,402 $ — $ — $ 58,402 Marketable securities: Asset-backed securities $ — $ 4,723 $ — $ 4,723 Corporate debt securities $ — $ 19,124 $ — $ 19,124 Equity securities $ 3,475 $ — $ — $ 3,475 Foreign government bonds $ — $ 205 $ — $ 205 Mortgage-backed securities $ — $ 2,328 $ — $ 2,328 U.S. government agency securities $ — $ 2,234 $ — $ 2,234 U.S. government notes $ — $ 4,305 $ — $ 4,305 Other accrued liabilities (current): Contingent consideration $ — $ — $ 1,160 $ 1,160 Other long-term liabilities: Contingent consideration $ — $ — $ 161 $ 161 Inventories, Net Inventories, net consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Raw materials $ 2,696 $ 2,459 Finished goods 2,647 3,659 Reserves (632 ) (470 ) $ 4,711 $ 5,648 Deferred Costs Deferred costs consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Appliance $ 39,600 $ 41,548 Commissions 18,951 17,414 $ 58,551 $ 58,962 Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Land $ 9,849 $ 9,578 Building 6,549 6,549 Computer hardware and software 30,102 26,450 Vehicles, machinery and equipment 4,772 4,711 Leasehold improvements 4,373 4,401 55,645 51,689 Accumulated depreciation and amortization (26,216 ) (19,779 ) $ 29,429 $ 31,910 Depreciation and amortization expense related to property and equipment was $2.3 million and $7.0 million for the three and nine months ended November 30, 2016 , respectively, and $2.1 million and $5.4 million for the three and nine months ended November 30, 2015 , respectively. Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss) ("AOCI"), net of tax, were as follows (in thousands): Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for- Sale Investments Total Balance as of February 29, 2016 $ (4,894 ) $ 385 $ (4,509 ) Other comprehensive income before reclassifications 119 31 150 Amounts reclassified from AOCI — (729 ) (729 ) Other comprehensive income (loss) 119 (698 ) (579 ) Balance as of November 30, 2016 $ (4,775 ) $ (313 ) $ (5,088 )

Acquisition

Acquisition	9 Months Ended
	Nov. 30, 2016
Business Combinations [Abstract]
Acquisition	Acquisition Sookasa, Inc. In March 2016, we acquired Sookasa, Inc. ("Sookasa"), a provider of encryption, security, and compliance solutions for cloud-based integration partners. We acquired all of the outstanding equity interests of Sookasa for cash consideration of $0.3 million , which included the settlement of the outstanding indebtedness of Sookasa with SVB Financial Group, and the issuance of 10,000 shares of our common stock to SVB Financial Group in connection with such settlement. The total aggregate consideration, inclusive of cash, debt settlement and equity, was approximately $0.4 million , of which $0.4 million was allocated to goodwill. The goodwill is primarily attributable to the acquired assembled workforce and is not expected to be deductible for income tax purposes. The results of operations, since the acquisition date, were not material to our condensed consolidated results of operations for the three and nine months ended November 30, 2016 . The following unaudited pro forma information presents the combined results of operations of Barracuda and Sookasa as if the acquisition had been completed on March 1, 2015, the beginning of the comparable prior annual reporting period. The unaudited pro forma information does not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, this unaudited pro forma information is presented for informational purposes only and is not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the period presented, nor are they indicative of future results of operations. Three Months Ended November 30, Nine Months Ended November 30, 2015 2016 2015 (in thousands) Pro forma revenue $ 80,150 $ 263,401 $ 236,621 Pro forma net income (loss) $ (2,373 ) $ 6,930 $ (10,018 )

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Nov. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The changes in the carrying amount of goodwill are summarized as follows (in thousands): Balance as of February 29, 2016 $ 69,595 Goodwill acquired 409 Effect of foreign exchange rates (187 ) Balance as of November 30, 2016 $ 69,817 Intangible assets subject to amortization are summarized as follows (in thousands): As of November 30, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Value Acquired developed technology $ 50,020 $ (28,975 ) $ 21,045 Customer relationships 19,744 (8,881 ) 10,863 Patents 2,999 (1,663 ) 1,336 Trade name 812 (346 ) 466 $ 73,575 $ (39,865 ) $ 33,710 As of February 29, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Value Acquired developed technology $ 50,082 $ (25,643 ) $ 24,439 Customer relationships 19,809 (7,313 ) 12,496 Patents 2,999 (1,295 ) 1,704 Trade name 812 (259 ) 553 $ 73,702 $ (34,510 ) $ 39,192 Certain intangible assets were removed as they were fully amortized as of the periods presented above. In addition to the above, we maintained other intangible assets not subject to amortization of $0.2 million as of November 30, 2016 and February 29, 2016 . Amortization expense, including impairment charges, was $1.8 million and $5.5 million for the three and nine months ended November 30, 2016 , respectively, and $1.3 million and $2.5 million for the three and nine months ended November 30, 2015 , respectively. As of November 30, 2016 , amortization expense for intangible assets in future periods was as follows: $1.8 million for the remainder of fiscal 2017 , $6.9 million for fiscal 2018 , $6.0 million for fiscal 2019 , $5.8 million for fiscal 2020 , $5.3 million for fiscal 2021 and $7.9 million thereafter.

Stockholders' Deficit

Stockholders' Deficit	9 Months Ended
	Nov. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stockholders' Deficit	Stockholders’ Deficit Stock-Based Compensation Total stock-based compensation expense has been classified as follows in our accompanying condensed consolidated statements of operations (in thousands): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Cost of revenue $ 323 $ 286 $ 959 $ 752 Research and development 3,737 2,271 8,809 6,106 Sales and marketing 2,211 1,812 6,002 5,001 General and administrative 2,946 3,337 9,280 9,557 $ 9,217 $ 7,706 $ 25,050 $ 21,416 Our 2012 Equity Incentive Plan (the "2012 Plan") authorizes the granting of stock options, stock appreciation rights, restricted stock and restricted stock units ("RSUs") to employees, directors and contractors. Options granted are exercisable for periods not to exceed 10 years. Options and RSUs granted typically vest over three or four years contingent upon employment or service with us on each vesting date. As of November 30, 2016 , net of forecasted forfeitures, there was $10.7 million of unrecognized compensation cost related to outstanding stock options, expected to be recognized over a weighted-average period of 2.13 years , and $49.4 million of unrecognized compensation cost related to unvested RSUs, expected to be recognized over a weighted-average period of 2.80 years . To the extent the actual forfeiture rate is different from what management has anticipated, stock-based compensation expense related to these equity awards will be different from management’s expectations. Our 2015 Employee Stock Purchase Plan (the "ESPP") allows eligible employee participants to purchase shares of our common stock at a discount through payroll deductions. The ESPP consists of offering periods that are six months in length and employees may purchase shares in each period at 85% of the lower of the Company’s fair market value on the first trading day of each offering period or on the purchase date. The ESPP will continue until the earlier to occur of (i) the termination of the ESPP by our board of directors, or (ii) June 15, 2035 . As of November 30, 2016 , we had reserved 750,000 shares of our common stock for issuance under the ESPP and 673,745 shares remain available for future issuance. Stock Repurchase Program In September 2015, our board of directors authorized a stock repurchase program to repurchase shares of our common stock for an aggregate purchase price not to exceed $50.0 million through September 30, 2017. The stock repurchase program does not obligate us to repurchase any specific dollar amount or to acquire any specific number of shares. Stock will be purchased from time to time, in the open market or through private transactions, subject to market conditions, in compliance with applicable state and federal securities laws. The timing and amount of repurchases, if any, will depend upon several factors, including market and business conditions, the trading price of our common stock and the nature of other investment opportunities. The following table summarizes our common stock repurchases for the periods presented (in thousands, except per share data): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Total number of shares repurchased — 430 482 430 Dollar amount of shares repurchased $ — $ 8,000 $ 7,241 $ 8,000 Average price paid per share $ — $ 18.60 $ 15.03 $ 18.60 Remaining amount authorized as of the period end $ 23,543 $ 42,000 $ 23,543 $ 42,000 For additional information, see "Part II — Other Information, Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds" of this Quarterly Report on Form 10-Q.

Income Taxes

Income Taxes	9 Months Ended
	Nov. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three and nine months ended November 30, 2016 , we recorded an income tax provision of $1.3 million and $9.8 million , respectively. For the three and nine months ended November 30, 2015 , we recorded an income tax benefit of $6.8 million and $2.3 million , respectively. In fiscal 2015, we established a valuation allowance against a significant portion of our deferred tax assets, including U.S. federal and state deferred tax assets and certain foreign deferred tax assets, because realization of these tax benefits through future taxable income did not meet the more-likely-than-not threshold. We intend to maintain the valuation allowance until sufficient positive evidence exists to support its reversal. The difference between the income tax provision that would be derived by applying the statutory rate to our before tax income for the three and nine months ended November 30, 2016 and the income tax provision actually recorded is primarily due to the temporary differences we do not expect to benefit from due to our valuation allowance, as well as non-deductible stock-based compensation expense and other currently non-deductible items.

Segment Information

Segment Information	9 Months Ended
	Nov. 30, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. Our chief operating decision maker is our chief executive officer. Our chief executive officer reviews financial information presented on a consolidated basis, accompanied by information about sales by geographic region, for purposes of allocating resources and evaluating financial performance. We have one business activity and there are no segment managers who are held accountable for operations, operating results and plans for levels or components below the consolidated level. Accordingly, we have determined that we have a single reportable segment and operating segment structure. Revenue by geographic region is presented as follows (in thousands): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 North America $ 66,760 $ 59,537 $ 197,712 $ 172,605 United States 63,305 56,302 187,311 162,836 Other 3,455 3,235 10,401 9,769 Latin America 1,163 1,030 3,513 3,142 Asia-Pacific 5,273 4,566 15,557 14,071 EMEA 15,610 14,954 46,608 46,614 $ 88,806 $ 80,087 $ 263,390 $ 236,432

Borrowings

Borrowings	9 Months Ended
	Nov. 30, 2016
Debt Disclosure [Abstract]
Borrowings	Borrowings Credit Facility We had a $25.0 million credit facility with Silicon Valley Bank ("SVB"), which was amended in fiscal 2017 to extend the expiration date to November 2017. The credit facility includes an option to request an increase of the available funds to $50.0 million and is secured by a security interest on substantially all of our assets and contains restrictive covenants. Upon drawing the credit facility, the financial covenants will require us to maintain a minimum adjusted EBITDA, as defined in the credit facility, and a minimum adjusted quick ratio. The credit facility also sets forth specified events of default. No amounts had been drawn under the credit facility through November 30, 2016.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Nov. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Matters On April 18, 2016, R. David Hunt, as Seller Representative of the shareholders of C2C Systems Limited ("C2C"), filed a lawsuit against us in the Court of Chancery of the State of Delaware, for alleged breach of contract of the Share Purchase Agreement dated August 13, 2014, pursuant to which we acquired all of the assets and liabilities of C2C. On December 21, 2016, the parties agreed on a resolution in principle during a mediation, in which we would pay approximately $1.25 million of the potential amounts due, or which could become due, to the shareholders of C2C under the Share Purchase Agreement, including obligations for the contingent consideration and the purchase consideration held back for potential indemnification claims. We have adequately accrued for the above obligations as of November 30, 2016, which are subject to finalization. On September 21, 2016, Marking Object Virtualization Intelligence, LLC filed a lawsuit against us in the United States District Court ("Court") for the Eastern District of Texas, Marshall Division, alleging that certain of our products infringe U.S. patent numbers 6,802,006, 6,510,516 and 7,650,504. On January 4, 2017, a motion to dismiss with prejudice was filed with the Court. We obtained a license to the patents in the lawsuit at no additional costs to us through our membership in RPX. We may, from time to time, be party to litigation and subject to claims that arise in the ordinary course of business. In addition, third parties may, from time to time, assert claims against us in the form of letters and other communications. We currently believe that these ordinary course matters will not have a material adverse effect on our business, consolidated financial position, results of operations or cash flows; however, the results of litigation and claims are inherently unpredictable. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	9 Months Ended
	Nov. 30, 2016
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Net income (loss) $ 1,793 $ (1,586 ) $ 7,014 $ (7,657 ) Weighted-average shares used to compute net income (loss) per share, basic 52,457 53,268 52,336 53,178 Dilutive shares from stock options and RSUs 1,538 — 1,055 — Weighted-average shares used to compute net income (loss) per share, diluted 53,995 53,268 53,391 53,178 Net income (loss) per share, basic $ 0.03 $ (0.03 ) $ 0.13 $ (0.14 ) Net income (loss) per share, diluted $ 0.03 $ (0.03 ) $ 0.13 $ (0.14 )

Overview and Basis of Present18

Overview and Basis of Presentation (Policies)	9 Months Ended
	Nov. 30, 2016
Accounting Policies [Abstract]
Nature of Operations	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 data protection solutions. We offer cloud-enabled 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	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 and such differences could be material to our condensed consolidated financial position and results of operations.
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, 2016 are not necessarily indicative of the results expected for the full fiscal year. The condensed consolidated balance sheet as of February 29, 2016 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 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 29, 2016 .
Foreign Currency	Foreign Currency For those subsidiaries whose functional currency is not the U.S. dollar, assets and liabilities are translated into U.S. dollar equivalents at the exchange rate in effect on the balance sheet date and revenues and expenses are translated into U.S. dollars using the average exchange rate over the period. Resulting currency translation adjustments are recorded in accumulated other comprehensive loss in our condensed consolidated balance sheets. We recorded net losses resulting from foreign exchange transactions of $2.4 million and $1.0 million for the three and nine months ended November 30, 2016 , respectively, and $0.4 million and $0.9 million for the three and nine months ended November 30, 2015 , respectively, which were reflected as a component of other income (expense), net in our condensed consolidated statements of operations. We have foreign subsidiaries that operate and sell our products in various markets around the world. As a result, we are exposed to foreign exchange risks. We utilize foreign exchange forward contracts to manage foreign currency risk associated with foreign currency denominated monetary assets and liabilities, primarily trade receivables, and to reduce the volatility of earnings and cash flows related to foreign currency transactions. The fair values of our contracts as of November 30, 2016 and February 29, 2016 were not significant. The change in the fair value of these foreign currency forward contracts is recorded as gains (losses) in other income (expense), net in our condensed consolidated statements of operations.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2016, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update No. 2016-18 ("ASU 2016-18"), which requires a statement of cash flows to explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and early adoption is permitted, including in an interim period. If early adopted in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. ASU 2016-18 is to be applied through a retrospective transition method to each period presented. We are currently evaluating the timing of adoption and do not expect the adoption of ASU 2016-18 to have a material impact on our condensed consolidated statements of cash flows. In October 2016, the FASB issued Accounting Standards Update No. 2016-17 ("ASU 2016-17") to amend Accounting Standards Update No. 2015-02 ("ASU 2015-02"), Consolidation (Topic 810): Amendments to the Consolidation Analysis, which addresses how a reporting entity that is the single decision maker of a variable interest entity ("VIE") should treat indirect interests in the entity held through related parties that are under common control with the reporting entity when determining whether it is the primary beneficiary of that VIE. ASU 2016-17 is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. While early adoption is permitted, we do not intend to early adopt ASU 2016-17. Since we adopted ASU 2015-02 in fiscal 2016, ASU 2016-17 is to be applied retrospectively to all relevant prior periods beginning with the first quarter of fiscal 2016. We do not expect the adoption of ASU 2016-17 to have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued Accounting Standards Update No. 2016-15 ("ASU 2016-15") which addresses eight cash flow classification issues. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years, and early adoption is permitted, including in an interim period. If early adopted in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. Early adoption requires the adoption of all the amendments in the same period. ASU 2016-15 is to be applied through a retrospective transition method to each period presented. If it is impracticable to apply retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. We are currently evaluating the timing and the impact of adopting ASU 2016-15 on our condensed consolidated statements of cash flows. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") which requires measurement and recognition of expected credit losses for financial assets held. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years, and early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. ASU 2016-13 is to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. We are currently evaluating the timing and the impact of adopting ASU 2016-13 on our condensed consolidated financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-09 ("ASU 2016-09") to simplify employee shared-based payment accounting. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. While early adoption is permitted, we do not intend to early adopt ASU 2016-09. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, and forfeitures should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term should be applied prospectively. An entity may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. We are currently evaluating the impact of adopting ASU 2016-09 on our condensed consolidated financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-07 ("ASU 2016-07") to eliminate the requirement to retroactively adopt the equity method of accounting for an investment that qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence. ASU 2016-07 requires that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. For an available-for-sale equity security that becomes qualified for the equity method of accounting, an entity is required to recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income (loss) at the date the investment becomes qualified for use of the equity method. ASU 2016-07 is effective for fiscal years beginning after December 15, 2016 and interim periods within those years. While early adoption is permitted, we do not intend to early adopt ASU 2016-07. ASU 2016-07 is to be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. We do not expect the adoption of ASU 2016-07 to have a material impact on our condensed consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02 ("Topic 842") to amend lease accounting requirements and requires entities to generally recognize on the balance sheet operating and financing lease liabilities and corresponding right-of-use assets. Topic 842 will require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Topic 842 is effective for fiscal years beginning after December 15, 2018 and interim periods within those years, and early adoption is permitted. Topic 842 is to be applied using a modified retrospective approach and includes a number of optional practical expedients that entities may elect to apply. We are currently evaluating the timing and the impact of adopting Topic 842 on our condensed consolidated financial statements and expect that most of our operating lease commitments will be subject to Topic 842 and recognized as operating lease liabilities and right-of-use assets upon the adoption. In January 2016, the FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") to enhance the reporting model for financial instruments by amending certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017 and interim periods within those years. Early application to financial statements of fiscal years or interim periods that have not yet been issued is permitted by presenting separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk if we elected to measure the liability at fair value in accordance with the fair value option for financial instruments, otherwise, early adoption is not permitted. ASU 2016-01 is to be applied with a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption. We are currently evaluating the impact of adopting ASU 2016-01 on our condensed consolidated financial statements. In May 2014, the FASB issued Accounting Standards Update No. 2014-09 ("Topic 606") which completed the joint effort by the FASB and the International Accounting Standards Board to clarify the principles for recognizing revenue and improving financial reporting. Topic 606 also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. The FASB issued subsequent amendments to the initial guidance collectively under Topic 606. Topic 606 supersedes nearly all existing revenue recognition guidance under GAAP. The core principle of Topic 606 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. Topic 606 defines a five-step process to achieve this core principle, and more judgment and estimates may be required under the Topic 606 revenue recognition process than are required under existing GAAP, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation, among others. Topic 606 is required to be effective for us as of the first quarter of fiscal 2019. While we are allowed to early adopt as of the first quarter of fiscal 2018, we do not intend to early adopt Topic 606. Topic 606 allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying Topic 606 recognized at the date of initial application. We are currently evaluating the adoption method and the impact of adopting Topic 606 on our condensed consolidated financial statements, including the effect on our operating results and our accounting for deferred commission balances.
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 and marketable equity securities are classified within Level 1 because they are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs. Marketable debt securities and derivative assets 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. Our 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 liabilities based on a weighted probability assessment of achieving the milestones related to certain of our acquisitions. 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.
Segment Information	Segment Information Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. Our chief operating decision maker is our chief executive officer. Our chief executive officer reviews financial information presented on a consolidated basis, accompanied by information about sales by geographic region, for purposes of allocating resources and evaluating financial performance. We have one business activity and there are no segment managers who are held accountable for operations, operating results and plans for levels or components below the consolidated level. Accordingly, we have determined that we have a single reportable segment and operating segment structure.

Balance Sheet Information (Tabl

Balance Sheet Information (Tables)	9 Months Ended
	Nov. 30, 2016
Balance Sheet Information [Abstract]
Cash and Cash Equivalents	The following table summarizes our cash and cash equivalents by category (in thousands): As of November 30, 2016 As of February 29, 2016 Cash $ 96,173 $ 60,252 Money market funds 24,940 58,402 $ 121,113 $ 118,654
Marketable Securities	The following tables summarize our marketable securities by category (in thousands): As of November 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Asset-backed securities $ 9,762 $ 11 $ (16 ) $ 9,757 Corporate debt securities 39,763 5 (207 ) 39,561 Foreign government bonds 201 — (1 ) 200 Mortgage-backed securities 3,631 — (21 ) 3,610 U.S. government agency securities 11,545 — (66 ) 11,479 U.S. government notes 8,637 3 (27 ) 8,613 $ 73,539 $ 19 $ (338 ) $ 73,220 As of February 29, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Asset-backed securities $ 4,717 $ 9 $ (3 ) $ 4,723 Corporate debt securities 19,135 11 (22 ) 19,124 Equity securities 3,095 380 — 3,475 Foreign government bonds 205 — — 205 Mortgage-backed securities 2,341 — (13 ) 2,328 U.S. government agency securities 2,242 6 (14 ) 2,234 U.S. government notes 4,279 26 — 4,305 $ 36,014 $ 432 $ (52 ) $ 36,394
Summary of Securities with Gross Unrealized Loss Positions and Fair Values	The following tables present gross unrealized losses and fair values for those marketable securities that were in an unrealized loss position aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in thousands): As of November 30, 2016 Less Than 12 Months 12 Months or Greater Total Fair Unrealized Fair Value Unrealized Fair Value Unrealized Asset-backed securities $ 4,961 $ (16 ) $ — $ — $ 4,961 $ (16 ) Corporate debt securities 35,020 (206 ) 1,200 (1 ) 36,220 (207 ) Foreign government bonds 200 (1 ) — — 200 (1 ) Mortgage-backed securities 3,282 (21 ) — — 3,282 (21 ) U.S. government agency securities 11,048 (64 ) 283 (2 ) 11,331 (66 ) U.S. government notes 7,886 (27 ) — — 7,886 (27 ) $ 62,397 $ (335 ) $ 1,483 $ (3 ) $ 63,880 $ (338 ) As of February 29, 2016 Less Than 12 Months 12 Months or Greater Total Fair Unrealized Fair Value Unrealized Fair Value Unrealized Asset-backed securities $ 1,788 $ (3 ) $ — $ — $ 1,788 $ (3 ) Corporate debt securities 12,088 (22 ) — — 12,088 (22 ) Mortgage-backed securities 1,746 (8 ) 385 (5 ) 2,131 (13 ) U.S. government agency securities 887 (10 ) 622 (4 ) 1,509 (14 ) $ 16,509 $ (43 ) $ 1,007 $ (9 ) $ 17,516 $ (52 )
Summary of Estimated Fair Value of Investments in Marketable Debt Securities	The following table summarizes the estimated fair value of our investments in marketable debt securities by contractual maturities (in thousands): As of November 30, 2016 Due in 1 year $ 10,394 Due in 1 year through 5 years 54,828 Due in 5 years through 10 years 3,326 Due after 10 years 4,672 $ 73,220
Summary of Assets or Liabilities Measured at Fair Value	Financial assets measured at fair value on a recurring basis are summarized below (in thousands): As of November 30, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 24,940 $ — $ — $ 24,940 Marketable securities: Asset-backed securities $ — $ 9,757 $ — $ 9,757 Corporate debt securities $ — $ 39,561 $ — $ 39,561 Foreign government bonds $ — $ 200 $ — $ 200 Mortgage-backed securities $ — $ 3,610 $ — $ 3,610 U.S. government agency securities $ — $ 11,479 $ — $ 11,479 U.S. government notes $ — $ 8,613 $ — $ 8,613 Other accrued liabilities (current): Contingent consideration $ — $ — $ 1,160 $ 1,160 Other long-term liabilities: Contingent consideration $ — $ — $ 161 $ 161 As of February 29, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 58,402 $ — $ — $ 58,402 Marketable securities: Asset-backed securities $ — $ 4,723 $ — $ 4,723 Corporate debt securities $ — $ 19,124 $ — $ 19,124 Equity securities $ 3,475 $ — $ — $ 3,475 Foreign government bonds $ — $ 205 $ — $ 205 Mortgage-backed securities $ — $ 2,328 $ — $ 2,328 U.S. government agency securities $ — $ 2,234 $ — $ 2,234 U.S. government notes $ — $ 4,305 $ — $ 4,305 Other accrued liabilities (current): Contingent consideration $ — $ — $ 1,160 $ 1,160 Other long-term liabilities: Contingent consideration $ — $ — $ 161 $ 161
Inventories, Net	Inventories, net consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Raw materials $ 2,696 $ 2,459 Finished goods 2,647 3,659 Reserves (632 ) (470 ) $ 4,711 $ 5,648
Deferred Costs	Deferred costs consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Appliance $ 39,600 $ 41,548 Commissions 18,951 17,414 $ 58,551 $ 58,962
Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): As of November 30, 2016 As of February 29, 2016 Land $ 9,849 $ 9,578 Building 6,549 6,549 Computer hardware and software 30,102 26,450 Vehicles, machinery and equipment 4,772 4,711 Leasehold improvements 4,373 4,401 55,645 51,689 Accumulated depreciation and amortization (26,216 ) (19,779 ) $ 29,429 $ 31,910
Components of Accumulated Other Comprehensive Income (Loss), Net of Tax	The components of accumulated other comprehensive income (loss) ("AOCI"), net of tax, were as follows (in thousands): Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for- Sale Investments Total Balance as of February 29, 2016 $ (4,894 ) $ 385 $ (4,509 ) Other comprehensive income before reclassifications 119 31 150 Amounts reclassified from AOCI — (729 ) (729 ) Other comprehensive income (loss) 119 (698 ) (579 ) Balance as of November 30, 2016 $ (4,775 ) $ (313 ) $ (5,088 )

Acquisition (Tables)

Acquisition (Tables)	9 Months Ended
	Nov. 30, 2016
Business Combinations [Abstract]
Schedule of Pro Forma Revenue and Net Income (Loss)	The following unaudited pro forma information presents the combined results of operations of Barracuda and Sookasa as if the acquisition had been completed on March 1, 2015, the beginning of the comparable prior annual reporting period. The unaudited pro forma information does not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, this unaudited pro forma information is presented for informational purposes only and is not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the period presented, nor are they indicative of future results of operations. Three Months Ended November 30, Nine Months Ended November 30, 2015 2016 2015 (in thousands) Pro forma revenue $ 80,150 $ 263,401 $ 236,621 Pro forma net income (loss) $ (2,373 ) $ 6,930 $ (10,018 )

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Nov. 30, 2016
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): Balance as of February 29, 2016 $ 69,595 Goodwill acquired 409 Effect of foreign exchange rates (187 ) Balance as of November 30, 2016 $ 69,817
Schedule of Intangible Assets Subject to Amortization	Intangible assets subject to amortization are summarized as follows (in thousands): As of November 30, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Value Acquired developed technology $ 50,020 $ (28,975 ) $ 21,045 Customer relationships 19,744 (8,881 ) 10,863 Patents 2,999 (1,663 ) 1,336 Trade name 812 (346 ) 466 $ 73,575 $ (39,865 ) $ 33,710 As of February 29, 2016 Gross Carrying Amount Accumulated Amortization Net Carrying Value Acquired developed technology $ 50,082 $ (25,643 ) $ 24,439 Customer relationships 19,809 (7,313 ) 12,496 Patents 2,999 (1,295 ) 1,704 Trade name 812 (259 ) 553 $ 73,702 $ (34,510 ) $ 39,192

Stockholders' Deficit (Tables)

Stockholders' Deficit (Tables)	9 Months Ended
	Nov. 30, 2016
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 our accompanying condensed consolidated statements of operations (in thousands): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Cost of revenue $ 323 $ 286 $ 959 $ 752 Research and development 3,737 2,271 8,809 6,106 Sales and marketing 2,211 1,812 6,002 5,001 General and administrative 2,946 3,337 9,280 9,557 $ 9,217 $ 7,706 $ 25,050 $ 21,416
Summary of Common Stock Repurchases	The following table summarizes our common stock repurchases for the periods presented (in thousands, except per share data): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Total number of shares repurchased — 430 482 430 Dollar amount of shares repurchased $ — $ 8,000 $ 7,241 $ 8,000 Average price paid per share $ — $ 18.60 $ 15.03 $ 18.60 Remaining amount authorized as of the period end $ 23,543 $ 42,000 $ 23,543 $ 42,000

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Nov. 30, 2016
Segment Reporting [Abstract]
Schedule of Revenue by Geographic Region	Revenue by geographic region is presented as follows (in thousands): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 North America $ 66,760 $ 59,537 $ 197,712 $ 172,605 United States 63,305 56,302 187,311 162,836 Other 3,455 3,235 10,401 9,769 Latin America 1,163 1,030 3,513 3,142 Asia-Pacific 5,273 4,566 15,557 14,071 EMEA 15,610 14,954 46,608 46,614 $ 88,806 $ 80,087 $ 263,390 $ 236,432

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Nov. 30, 2016
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Net Income (Loss) Per Share	The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended November 30, Nine Months Ended November 30, 2016 2015 2016 2015 Net income (loss) $ 1,793 $ (1,586 ) $ 7,014 $ (7,657 ) Weighted-average shares used to compute net income (loss) per share, basic 52,457 53,268 52,336 53,178 Dilutive shares from stock options and RSUs 1,538 — 1,055 — Weighted-average shares used to compute net income (loss) per share, diluted 53,995 53,268 53,391 53,178 Net income (loss) per share, basic $ 0.03 $ (0.03 ) $ 0.13 $ (0.14 ) Net income (loss) per share, diluted $ 0.03 $ (0.03 ) $ 0.13 $ (0.14 )

Overview and Basis of Present25

Overview and Basis of Presentation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Accounting Policies [Abstract]
Net gain (loss) from foreign exchange transactions	$ (2.4)	$ (0.4)	$ (1)	$ (0.9)

Balance Sheet Information - Cas

Balance Sheet Information - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016	Nov. 30, 2015	Feb. 28, 2015
Cash and Cash Equivalents [Abstract]
Cash	$ 96,173	$ 60,252
Money market funds	24,940	58,402
Total cash and cash equivalents	$ 121,113	$ 118,654	$ 117,073	$ 151,373

Balance Sheet Information - Mar

Balance Sheet Information - Marketable Securities (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Nov. 30, 2016	Nov. 30, 2016	Feb. 29, 2016
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	$ 73,539,000	$ 73,539,000	$ 36,014,000
Marketable securities, Gross Unrealized Gains	19,000	19,000	432,000
Marketable securities, Gross Unrealized Losses	(338,000)	(338,000)	(52,000)
Marketable securities, Fair Value	73,220,000	73,220,000	36,394,000
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	9,762,000	9,762,000	4,717,000
Marketable securities, Gross Unrealized Gains	11,000	11,000	9,000
Marketable securities, Gross Unrealized Losses	(16,000)	(16,000)	(3,000)
Marketable securities, Fair Value	9,757,000	9,757,000	4,723,000
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	39,763,000	39,763,000	19,135,000
Marketable securities, Gross Unrealized Gains	5,000	5,000	11,000
Marketable securities, Gross Unrealized Losses	(207,000)	(207,000)	(22,000)
Marketable securities, Fair Value	39,561,000	39,561,000	19,124,000
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost			3,095,000
Marketable securities, Gross Unrealized Gains			380,000
Marketable securities, Fair Value			3,475,000
Available-for-sale securities, gross realized gains	0	1,100,000
Foreign government bonds
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	201,000	201,000	205,000
Marketable securities, Gross Unrealized Losses	(1,000)	(1,000)
Marketable securities, Fair Value	200,000	200,000	205,000
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	3,631,000	3,631,000	2,341,000
Marketable securities, Gross Unrealized Losses	(21,000)	(21,000)	(13,000)
Marketable securities, Fair Value	3,610,000	3,610,000	2,328,000
U.S. government agency securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	11,545,000	11,545,000	2,242,000
Marketable securities, Gross Unrealized Gains	0	0	6,000
Marketable securities, Gross Unrealized Losses	(66,000)	(66,000)	(14,000)
Marketable securities, Fair Value	11,479,000	11,479,000	2,234,000
U.S. government notes
Schedule of Available-for-sale Securities [Line Items]
Marketable securities, Amortized Cost	8,637,000	8,637,000	4,279,000
Marketable securities, Gross Unrealized Gains	3,000	3,000	26,000
Marketable securities, Gross Unrealized Losses	(27,000)	(27,000)
Marketable securities, Fair Value	$ 8,613,000	$ 8,613,000	$ 4,305,000

Balance Sheet Information - Sum

Balance Sheet Information - Summary of Securities with Gross Unrealized Loss Positions and Fair Values (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	$ 62,397	$ 16,509
Less Than 12 Months, Unrealized Losses	(335)	(43)
12 Months or Greater, Fair Value	1,483	1,007
12 Months or Greater, Unrealized Losses	(3)	(9)
Total, Fair Value	63,880	17,516
Total, Unrealized Losses	(338)	(52)
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	4,961	1,788
Less Than 12 Months, Unrealized Losses	(16)	(3)
12 Months or Greater, Fair Value	0	0
12 Months or Greater, Unrealized Losses	0	0
Total, Fair Value	4,961	1,788
Total, Unrealized Losses	(16)	(3)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	35,020	12,088
Less Than 12 Months, Unrealized Losses	(206)	(22)
12 Months or Greater, Fair Value	1,200	0
12 Months or Greater, Unrealized Losses	(1)	0
Total, Fair Value	36,220	12,088
Total, Unrealized Losses	(207)	(22)
Foreign government bonds
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	200
Less Than 12 Months, Unrealized Losses	(1)
12 Months or Greater, Fair Value	0
12 Months or Greater, Unrealized Losses	0
Total, Fair Value	200
Total, Unrealized Losses	(1)
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	3,282	1,746
Less Than 12 Months, Unrealized Losses	(21)	(8)
12 Months or Greater, Fair Value	0	385
12 Months or Greater, Unrealized Losses	0	(5)
Total, Fair Value	3,282	2,131
Total, Unrealized Losses	(21)	(13)
U.S. government agency securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	11,048	887
Less Than 12 Months, Unrealized Losses	(64)	(10)
12 Months or Greater, Fair Value	283	622
12 Months or Greater, Unrealized Losses	(2)	(4)
Total, Fair Value	11,331	1,509
Total, Unrealized Losses	(66)	$ (14)
U.S. government notes
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	7,886
Less Than 12 Months, Unrealized Losses	(27)
12 Months or Greater, Fair Value	0
12 Months or Greater, Unrealized Losses	0
Total, Fair Value	7,886
Total, Unrealized Losses	$ (27)

Balance Sheet Information - S29

Balance Sheet Information - Summary of Estimated Fair Value of Investments in Marketable Debt Securities (Detail) $ in Thousands	Nov. 30, 2016USD ($)
Balance Sheet Information [Abstract]
Due in 1 year	$ 10,394
Due in 1 year through 5 years	54,828
Due in 5 years through 10 years	3,326
Due after 10 years	4,672
Total	$ 73,220

Balance Sheet Information - S30

Balance Sheet Information - Summary of Assets or Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	$ 73,220
Fair value measurements recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration (current)	1,160	$ 1,160
Contingent consideration (non-current)	161	161
Fair value measurements recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	24,940	58,402
Fair value measurements recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	9,757	4,723
Fair value measurements recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	39,561	19,124
Fair value measurements recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		3,475
Fair value measurements recurring | Foreign government bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	200	205
Fair value measurements recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	3,610	2,328
Fair value measurements recurring | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	11,479	2,234
Fair value measurements recurring | U.S. government notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	8,613	4,305
Fair value measurements recurring | Level 1 | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	24,940	58,402
Fair value measurements recurring | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		3,475
Fair value measurements recurring | Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	9,757	4,723
Fair value measurements recurring | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	39,561	19,124
Fair value measurements recurring | Level 2 | Foreign government bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	200	205
Fair value measurements recurring | Level 2 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	3,610	2,328
Fair value measurements recurring | Level 2 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	11,479	2,234
Fair value measurements recurring | Level 2 | U.S. government notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, debt	8,613	4,305
Fair value measurements recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration (current)	1,160	1,160
Contingent consideration (non-current)	$ 161	$ 161

Balance Sheet Information - Inv

Balance Sheet Information - Inventories, Net (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Balance Sheet Information [Abstract]
Raw materials	$ 2,696	$ 2,459
Finished goods	2,647	3,659
Reserves	(632)	(470)
Total inventories, net	$ 4,711	$ 5,648

Balance Sheet Information - Def

Balance Sheet Information - Deferred Costs (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Deferred Cost [Line Items]
Total deferred costs	$ 58,551	$ 58,962
Appliance
Deferred Cost [Line Items]
Total deferred costs	39,600	41,548
Commissions
Deferred Cost [Line Items]
Total deferred costs	$ 18,951	$ 17,414

Balance Sheet Information - Pro

Balance Sheet Information - Property and Equipment, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015	Feb. 29, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 55,645		$ 55,645		$ 51,689
Accumulated depreciation and amortization	(26,216)		(26,216)		(19,779)
Property and equipment, net	29,429		29,429		31,910
Depreciation, amortization and impairment expense			12,442	$ 7,927
Property and equipment
Property, Plant and Equipment [Line Items]
Depreciation, amortization and impairment expense	2,300	$ 2,100	7,000	$ 5,400
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,849		9,849		9,578
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,549		6,549		6,549
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,102		30,102		26,450
Vehicles, machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,772		4,772		4,711
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,373		$ 4,373		$ 4,401

Balance Sheet Information - Com

Balance Sheet Information - Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) $ in Thousands	9 Months Ended
	Nov. 30, 2016USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	$ (32,098)
Other comprehensive income before reclassifications	150
Amounts reclassified from AOCI	(729)
Other comprehensive income (loss)	(579)
Ending balance	(4,957)
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	(4,894)
Other comprehensive income before reclassifications	119
Amounts reclassified from AOCI	0
Other comprehensive income (loss)	119
Ending balance	(4,775)
Unrealized Gains (Losses) on Available-for- Sale Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	385
Other comprehensive income before reclassifications	31
Amounts reclassified from AOCI	(729)
Other comprehensive income (loss)	(698)
Ending balance	(313)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	(4,509)
Ending balance	$ (5,088)

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) - USD ($)	1 Months Ended
	Mar. 31, 2016	Nov. 30, 2016	Feb. 29, 2016
Business Acquisition [Line Items]
Goodwill		$ 69,817,000	$ 69,595,000
Sookasa, Inc.
Business Acquisition [Line Items]
Business acquisition, aggregate cash consideration to acquire Sookasa Inc.	$ 300,000
Business acquisition, issuance of common stock to acquire Sookasa Inc. (in shares)	10,000
Business acquisition, aggregate consideration transferred to acquire Sookasa Inc.	$ 400,000
Goodwill	400,000
Goodwill deductible for income tax purpose	$ 0

Acquisition - Schedule of Pro F

Acquisition - Schedule of Pro Forma Revenue and Net Income (Loss) (Details) - Sookasa, Inc. - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Business Acquisition [Line Items]
Pro forma revenue	$ 80,150	$ 263,401	$ 236,621
Pro forma net income (loss)	$ (2,373)	$ 6,930	$ (10,018)

Goodwill and Intangible Asset37

Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
	Nov. 30, 2016USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 69,595
Goodwill acquired	409
Effect of foreign exchange rates	(187)
Balance at end of period	$ 69,817

Goodwill and Intangible Asset38

Goodwill and Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 73,575	$ 73,702
Accumulated Amortization	(39,865)	(34,510)
Net Carrying Value	33,710	39,192
Acquired developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	50,020	50,082
Accumulated Amortization	(28,975)	(25,643)
Net Carrying Value	21,045	24,439
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,744	19,809
Accumulated Amortization	(8,881)	(7,313)
Net Carrying Value	10,863	12,496
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,999	2,999
Accumulated Amortization	(1,663)	(1,295)
Net Carrying Value	1,336	1,704
Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	812	812
Accumulated Amortization	(346)	(259)
Net Carrying Value	$ 466	$ 553

Goodwill and Intangible Asset39

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015	Feb. 29, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Other intangible assets not subject to amortization	$ 0.2		$ 0.2		$ 0.2
Amortization expense	1.8	$ 1.3	5.5	$ 2.5
Amortization expense for the remainder of fiscal year 2017	1.8		1.8
Amortization expense for fiscal year 2018	6.9		6.9
Amortization expense for fiscal year 2019	6		6
Amortization expense for fiscal year 2020	5.8		5.8
Amortization expense for fiscal year 2021	5.3		5.3
Amortization expense thereafter	$ 7.9		$ 7.9

Stockholders' Deficit - Schedul

Stockholders' Deficit - Schedule of Total Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 9,217	$ 7,706	$ 25,050	$ 21,416
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	323	286	959	752
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	3,737	2,271	8,809	6,106
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,211	1,812	6,002	5,001
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 2,946	$ 3,337	$ 9,280	$ 9,557

Stockholders' Deficit - Additio

Stockholders' Deficit - Additional Information (Detail) - USD ($)	9 Months Ended
	Nov. 30, 2016	Sep. 30, 2015
2015 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, offering period	6 months
Employee Stock Purchase Plan, percentage	85.00%
Number of common stock shares reserved for issuance	673,745
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to outstanding stock options	$ 10,700,000
Expected period for recognizing compensation expense	2 years 1 month 16 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected period for recognizing compensation expense	2 years 9 months 18 days
Unrecognized compensation cost related to unvested RSUs	$ 49,400,000
Minimum | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and RSUs granted vesting period	3 years
Minimum | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and RSUs granted vesting period	3 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted are exercisable for periods	10 years
Common stock repurchase program, aggregate purchase price		$ 50,000,000
Maximum | 2015 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares reserved for issuance	750,000
Maximum | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and RSUs granted vesting period	4 years
Maximum | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and RSUs granted vesting period	4 years

Stockholders' Deficit - Summary

Stockholders' Deficit - Summary of Common Stock Repurchases (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total number of shares repurchased	0	430	482	430
Dollar amount of shares repurchased	$ 0	$ 8,000	$ 7,241	$ 8,000
Average price paid per share (in usd per share)	$ 0	$ 18.60	$ 15.03	$ 18.60
Remaining amount authorized as of the period end	$ 23,543	$ 42,000	$ 23,543	$ 42,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Income Tax Disclosure [Abstract]
Benefit from (provision for) income taxes	$ (1,329)	$ 6,793	$ (9,848)	$ 2,321

Segment Information - Additiona

Segment Information - Additional Information (Detail)	9 Months Ended
	Nov. 30, 2016Segment
Segment Reporting [Abstract]
Number of reporting segment	1

Segment Information - Schedule

Segment Information - Schedule of Revenue by Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Segment Reporting Information [Line Items]
Revenue	$ 88,806	$ 80,087	$ 263,390	$ 236,432
North America
Segment Reporting Information [Line Items]
Revenue	66,760	59,537	197,712	172,605
United States
Segment Reporting Information [Line Items]
Revenue	63,305	56,302	187,311	162,836
Other
Segment Reporting Information [Line Items]
Revenue	3,455	3,235	10,401	9,769
Latin America
Segment Reporting Information [Line Items]
Revenue	1,163	1,030	3,513	3,142
Asia-Pacific
Segment Reporting Information [Line Items]
Revenue	5,273	4,566	15,557	14,071
EMEA
Segment Reporting Information [Line Items]
Revenue	$ 15,610	$ 14,954	$ 46,608	$ 46,614

Borrowings (Details)

Borrowings (Details) - USD ($)	Nov. 30, 2016	Feb. 28, 2014
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity		$ 25,000,000
Second Amendment
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	$ 50,000,000
Amount drawn under credit facility	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Legal Matters (Details) $ in Thousands	Dec. 21, 2016USD ($)
C2C Systems Limited | Pending Litigation | Subsequent Event
Loss Contingencies [Line Items]
Possible settlement for claims arising from the Share Purchase Agreement	$ 1,250

Net Income (Loss) Per Share - C

Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net income (loss)	$ 1,793	$ (1,586)	$ 7,014	$ (7,657)
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted-average shares used to compute net income (loss) per share, basic (in shares)	52,457	53,268	52,336	53,178
Dilutive shares from stock options and RSUs (in shares)	1,538	0	1,055	0
Weighted-average shares used to compute net income (loss) per share, diluted (in shares)	53,995	53,268	53,391	53,178
Earnings Per Share, Basic and Diluted [Abstract]
Net income (loss) per share, basic (in usd per share)	$ 0.03	$ (0.03)	$ 0.13	$ (0.14)
Net income (loss) per share, diluted (in usd per share)	$ 0.03	$ (0.03)	$ 0.13	$ (0.14)