Overview and Basis of Presentation	3 Months Ended
May 31, 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 months ended May 31, 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 the condensed consolidated balance sheets. We recorded net gains (losses) resulting from foreign exchange transactions of $0.5 million and $(0.6) million for the three months ended May 31, 2016 and 2015, respectively, in other income (expense), net in the 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 May 31, 2016 and February 29, 2016 were not significant. The change in the fair value of these foreign currency forward contracts is recorded as gain (loss) in other income (expense), net in the condensed consolidated statements of operations. Recent Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (the "FASB") issued an accounting standard which requires measurement and recognition of expected credit losses for financial assets held. The standard update 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. The standard 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 impact of adopting this update on our condensed consolidated financial statements. In March 2016, the FASB issued an accounting standard to simplify employee shared-based payment accounting. The standard update is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years, and early adoption is permitted in any interim or annual 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. 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 timing and the impact of adopting this update on our condensed consolidated financial statements. In March 2016, the FASB issued an accounting standard 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. The standard update 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. The standard update is effective for fiscal years beginning after December 15, 2016 and interim periods within those years, and early adoption is permitted. The standard 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 this update to have a material impact on our condensed consolidated financial statements. In February 2016, the FASB issued an accounting standard 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. The new standard will require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. The standard update is effective for fiscal years beginning after December 15, 2018 and interim periods within those years, and early adoption is permitted. The standard 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 impact of adopting this update on our condensed consolidated financial statements and expect that most of our operating lease commitments will be subject to the standard update and recognized as operating lease liabilities and right-of-use assets upon the adoption. In January 2016, the FASB issued an accounting standard to enhance the reporting model for financial instruments by amending certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The standard update 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. The standard 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 this update on our condensed consolidated financial statements. In May 2014, the FASB issued an accounting standard 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, and issued subsequent amendments to the initial guidance collectively under FASB Accounting Standards Codification 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, while more judgment and estimates may be required within the 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 effective for us as of either the first quarter of fiscal 2018 or the first quarter of fiscal 2019. The standard allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying this update recognized at the date of initial application. We are continuing to evaluate the timing and the impact of adopting this update on our condensed consolidated financial statements.

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 months ended May 31, 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 the condensed consolidated balance sheets. We recorded net gains (losses) resulting from foreign exchange transactions of $0.5 million and $(0.6) million for the three months ended May 31, 2016 and 2015, respectively, in other income (expense), net in the 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 May 31, 2016 and February 29, 2016 were not significant. The change in the fair value of these foreign currency forward contracts is recorded as gain (loss) in other income (expense), net in the condensed consolidated statements of operations.

Recent Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (the "FASB") issued an accounting standard which requires measurement and recognition of expected credit losses for financial assets held. The standard update 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. The standard 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 impact of adopting this update on our condensed consolidated financial statements.

In March 2016, the FASB issued an accounting standard to simplify employee shared-based payment accounting. The standard update is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years, and early adoption is permitted in any interim or annual 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. 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 timing and the impact of adopting this update on our condensed consolidated financial statements.

In March 2016, the FASB issued an accounting standard 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. The standard update 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. The standard update is effective for fiscal years beginning after December 15, 2016 and interim periods within those years, and early adoption is permitted. The standard 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 this update to have a material impact on our condensed consolidated financial statements.

In February 2016, the FASB issued an accounting standard 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. The new standard will require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. The standard update is effective for fiscal years beginning after December 15, 2018 and interim periods within those years, and early adoption is permitted. The standard 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 impact of adopting this update on our condensed consolidated financial statements and expect that most of our operating lease commitments will be subject to the standard update and recognized as operating lease liabilities and right-of-use assets upon the adoption.

In January 2016, the FASB issued an accounting standard to enhance the reporting model for financial instruments by amending certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The standard update 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. The standard 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 this update on our condensed consolidated financial statements.

In May 2014, the FASB issued an accounting standard 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, and issued subsequent amendments to the initial guidance collectively under FASB Accounting Standards Codification 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, while more judgment and estimates may be required within the 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 effective for us as of either the first quarter of fiscal 2018 or the first quarter of fiscal 2019. The standard allows for full retrospective adoption applied to all periods presented or retrospective adoption with the cumulative effect of initially applying this update recognized at the date of initial application. We are continuing to evaluate the timing and the impact of adopting this update on our condensed consolidated financial statements.