| Description of the Business and Summary of Significant Accounting Policies | DESCRIPTION OF THE BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Business Infoblox Inc. (together with its subsidiaries, “we” or “our”) was originally incorporated in the State of Illinois in February 1999 and was reincorporated in the State of Delaware in May 2003. We are headquartered in Santa Clara, California and have subsidiaries and representative offices located throughout the world. We provide a broad family of enterprise and service provider-class solutions to automate management of the critical network infrastructure services needed for secure, scalable and fault-tolerant connections between applications, devices and users. Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include all adjustments necessary for the fair presentation of our consolidated financial position, results of operations and cash flows for the periods presented. The accompanying consolidated financial statements include the accounts of Infoblox Inc. and our wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of the accompanying consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Those management estimates and assumptions affect revenue recognition, allowances for doubtful accounts and sales returns, valuation of our cash equivalents, restricted cash and available-for-sale investments, valuation of inventory, determination of fair value of stock-based awards, valuation of assumed liabilities and acquired goodwill, tangible and intangible assets, impairment of goodwill and other intangible assets, amortization of intangible assets, restructuring liabilities, contingencies and litigation and accounting for income taxes, including the valuation reserve on deferred tax assets and uncertain tax positions. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors and adjust those estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ from these estimates and assumptions, and those differences could be material to the consolidated financial statements. Concentration of Supply Risk with Contract Manufacturer We outsource the substantial majority of our manufacturing, repair and supply chain management operations to one independent contract manufacturer. The inability of the manufacturer to fulfill our supply requirements could have a material and adverse effect on our business and consolidated financial statements. In addition, our independent contract manufacturer procures components and manufactures our products based on our demand forecasts. These forecasts are based on our estimates of future demand for our products, which are in turn based on historical trends and an analysis from our sales and marketing organizations, adjusted for overall market conditions. We may be subject to the requirement to purchase inventory or to pay additional fees to the contract manufacturer if there is a significant difference in scheduled shipments or if the contract manufacturer holds inventory longer than a specified period. Concentrations of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, restricted cash, available-for-sale investments and accounts receivable. Our cash, cash equivalents and restricted cash are invested in high-credit quality financial instruments held mainly in two US banks. Such deposits may be in excess of insured limits provided on such deposits. Our investments consist of a diversified portfolio of highly liquid securities that have maturities of less than two years. We mitigate credit risk in respect to accounts receivable by performing ongoing credit evaluations of our customers and maintaining a reserve for potential credit losses. In addition, we generally require our customers to prepay for maintenance and support services to mitigate the risk of uncollectible accounts receivable. Cash and Cash Equivalents All highly liquid investments purchased with an original maturity of three months or less are classified as cash and cash equivalents. Cash and cash equivalents consist of cash on hand, demand deposits with banks, highly liquid investments in money market funds, U.S. Treasury securities and certificates of deposit which are readily convertible into cash. Restricted Cash Under our facility lease arrangements, we are required to maintain letters of credit from a U.S. bank as security for performance under these agreements. The letters of credit are generally invested in U.S. Treasury securities or money market funds or interest-bearing accounts in amounts equal to the letters of credit, which are classified as restricted cash on the consolidated balance sheets. As of July 31, 2016, restricted cash amounted to $12.0 million , of which $2.0 million is shown as part of prepaid expenses and other current assets and $10.0 million is shown as non-current assets in the consolidated balance sheet. Of the $12.0 million restricted cash as of July 31, 2016, $8.5 million is related to hold-back liability in connection with the IID acquisition. As of July 31, 2015, restricted cash, which is shown under non-current assets in the consolidated balance sheet, amounted to $3.5 million . Short-term Investments Investments with original maturities at purchase of greater than three months are classified as short-term or long-term investments. Management determines the appropriate classification of securities at the time of purchase and re-evaluates such classification as of each balance sheet date. Our investments in publicly-traded debt securities are classified as available-for-sale. Available-for-sale investments are initially recorded at cost and periodically adjusted to fair value in the consolidated balance sheets. Unrealized gains and losses on these investments are reported as a separate component of accumulated other comprehensive income (loss). Realized gains and losses are determined based on the specific identification method and are reported in the consolidated statements of operations. The investments are adjusted for amortization of premiums and discounts to maturity and such amortization is included in other income (expense), net. We recognize an impairment charge for available-for-sale investments when a decline in the fair value of our investments below the cost basis is determined to be other than temporary. We consider various factors in determining whether to recognize an impairment charge, including the length of time the investment has been in a loss position, the extent to which the fair value has been less than the cost basis, the investment's financial condition and near-term prospects, and our intent to sell, or whether it is more likely than not we will be required to sell, the investment before recovery of the investment's amortized cost basis. If we determine that the decline in an investment's fair value is other than temporary, the difference is recognized as an impairment loss in our consolidated statements of operations. During the year ended July 31, 2016 , we did not consider any of our investments to be other-than-temporarily impaired. Fair Value Fair value is defined as the price that would be received upon sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value, we consider the principal or most advantageous market in which we transact, and consider assumptions that market participants would use when pricing the asset or liability. We apply the following fair value hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level I - Quoted prices in active markets for identical assets or liabilities. Level II - 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. These inputs are valued using market based approaches. Level III - Inputs are unobservable inputs based on management assumptions. These inputs, if any, are valued using internal financial models. Inventory Inventories are stated at the lower of standard cost, which approximates actual cost (first-in, first-out), or market value (estimated net realizable value). The valuation of inventories at the lower of cost or market value requires the use of estimates regarding the amount of inventory that will be sold and the prices at which current inventory will be sold. These estimates are dependent on our assessment of current and expected orders from our customers. If actual market conditions are less favorable than those projected by management, inventory write-downs may be required. Our finished goods mainly consist of appliances that are used for the replacement of failed units under maintenance and support agreements and finished goods needed for our expanded depot requirements. We write down refurbished inventory based on the age of the units and number of hardware failures. Property and Equipment, Net Property and equipment, including leasehold improvements, are stated at cost, less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets, which are two to seven years. Leasehold improvements are amortized on a straight-line basis over the shorter of the estimated useful lives of the assets or the remaining lease term. Upon the retirement or disposition of property and equipment, the related costs and accumulated depreciation are removed from, and the resulting gain or loss is included in, the consolidated statements of operations. Repair and maintenance costs that do not extend the life or improve an asset are charged to expense as incurred. Goodwill, Intangible Assets and Other Long-Lived Assets Goodwill represents the future economic benefits arising from other assets acquired in a business combination or an acquisition that are not individually identified and separately recorded. The excess of the purchase price over the estimated fair value of net assets of businesses acquired in a business combination is recognized as goodwill. Intangible assets consist of identifiable intangible assets, including developed technology, customer relationships, non-compete agreements, trademarks and patents, resulting from our acquisitions. Intangible assets are recorded at fair value, net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives. Amortization expense is included as a component of cost of products and licenses revenue and sales and marketing expense in the accompanying consolidated statements of operations. Amounts included in sales and marketing expense relate to amortization of intangible asset attributed to customer relationships. Goodwill and other intangible assets acquired in a business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually during the fourth quarter. Such goodwill and other intangible assets may also be tested for impairment between annual tests in the presence of impairment indicators such as, but not limited to: (a) a significant adverse change in legal factors or in the business climate; (b) a substantial decline in our market capitalization, (c) an adverse action or assessment by a regulator; (d) unanticipated competition; (e) loss of key personnel; (f) a more likely-than-not expectation of sale or disposal of a reporting unit or a significant portion thereof; (g) a realignment of our resources or restructuring of our existing businesses in response to changes to industry and market conditions; (h) testing for recoverability of a significant asset group within a reporting unit; or (i) higher discount rate used in the impairment analysis as impacted by an increase in interest rates. We evaluate goodwill for impairment on an annual basis as of May 1st or more frequently if we believe impairment indicators exist. Goodwill is tested for impairment by comparing the reporting unit's carrying value, including goodwill, to the fair value of the reporting unit. We operate under one reporting unit and for our annual goodwill impairment test, we determine the fair value of our reporting unit based on the Company's enterprise value. Long-lived assets, such as property and equipment and intangible assets subject to depreciation and amortization, are evaluated for impairment whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. Among the factors and circumstances we considered in determining recoverability are: (i) a significant decrease in the market price of a long-lived asset; (ii) a significant adverse change in the extent or manner in which a long-lived asset is being used or in its physical condition; (iii) a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset, including an adverse action or assessment by a regulator; (iv) an accumulation of costs significantly in excess of the amount originally expected for the acquisition and (v) current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. There have been no indicators of impairment of goodwill, intangible assets and other long-lived assets, and we did not record any impairment losses during fiscal years 2016 , 2015 and 2014 . Revenue Recognition We generate revenue from the sales or licensing of hardware and software products, support and maintenance, and other services through a direct sales force and indirect relationships with our channel partners. Revenue is recognized when all of the following criteria are met: Persuasive evidence of an arrangement exists. Evidence of an arrangement generally consists of a purchase order issued pursuant to the terms and conditions of a distributor or value-added reseller agreement or, in limited cases, an end-user agreement. Delivery or performance has occurred. We use shipping and related documents, distributor sell-through reports, or written evidence of customer acceptance, when applicable, to verify delivery or performance. We do not recognize product revenue until transfer of title and risk of loss, which generally is upon shipment to value-added resellers or end-users. The sales price is fixed or determinable. We assess whether the sales price is fixed or determinable based on payment terms and whether the sales price is subject to refund or adjustment. Collection is probable . We assess probability of collection on a customer-by-customer basis. We subject our customers to a credit review process that evaluates their financial condition and ability to pay for our products and services. If we conclude that collection is not probable, we do not recognize revenue until cash is received. We recognize product revenue at the time of shipment provided that all other revenue recognition criteria have been met. Our channel partners generally receive an order from an end-customer prior to placing an order with us. In addition, payment from our channel partners is not contingent on the partner’s success in sales to end-customers. Our channel partners generally do not stock appliances and only have limited stock rotation rights and no price protection rights. When necessary, we make certain estimates and maintain allowances for sales returns and other programs based on our historical experience. To date, these estimates have not been significant. S ervices revenue includes maintenance and support, training and consulting, and subscription services revenue. Maintenance and support revenue includes arrangements for software maintenance and technical support for our products and licenses. Maintenance is offered under renewable, fee-based contracts, which include 24-hour technical support, hardware repair and replacement parts, bug fixes, patches and unspecified upgrades on a when-and-if-available basis. Revenue from customer maintenance and support contracts and subscription services is deferred and recognized ratably over the contractual period, generally one to three years. Revenue from consulting and training is recognized as the services are completed. Revenues are reported net of sales taxes. Multiple Element Arrangements We enter into multiple element revenue arrangements in which a customer may purchase a combination of hardware, software, software upgrades, hardware and software maintenance and support, training and consulting, and subscription services. We account for multiple agreements with a single customer as one arrangement if the contractual terms and/or substance of those agreements indicate that they may be so closely related that they are, in effect, parts of a single arrangement. Most of our products are hardware appliances containing software components that operate together to provide the essential functionality of the product. Therefore, the software sold with our hardware appliances are considered non-software deliverables and are not accounted for under the industry-specific software revenue recognition guidance. Our products and licenses revenue also includes stand-alone software products. Stand-alone software may operate on our hardware appliances, but is not considered essential to the functionality of the hardware and continues to be subject to the industry-specific software revenue recognition guidance. The industry-specific software revenue recognition guidance includes the use of the residual method under which the amount of revenue allocated to delivered elements equals the total arrangement consideration less the aggregate fair value of any undelivered elements. If VSOE of fair value of one or more undelivered items does not exist, revenue from the entire arrangement is deferred and recognized at the earlier of: (i) delivery of those elements or (ii) when fair value can be established unless support and maintenance is the only undelivered element, in which case, the entire arrangement fee is recognized ratably over the contractual service period. We provide unspecified software upgrades for most of our products, on a when-and-if available basis, through maintenance and support contracts. To the extent that the software being supported does not function together with the hardware to deliver the hardware’s essential functionality, these support arrangements would continue to be subject to the industry-specific software revenue recognition guidance. We allocate the arrangement fee to each element based upon the relative selling price of that element and, if software and software-related (e.g., maintenance for the software element) elements are also included in the arrangement, we allocate the arrangement fee to each of those software and software-related elements as a group based on the relative selling price for those elements. After such allocations are made, the amount of the arrangement fee allocated to the software and software-related elements is accounted for using the residual method. When applying the relative selling price method, we determine the selling price for each element using vendor-specific objective evidence, or VSOE, of selling price, if it exists, or if not, third-party evidence, or TPE, of selling price, if it exists. If neither VSOE nor TPE of selling price exist for an element, we use our best estimate of selling price, or BESP, for that element. The revenue allocated to each element is then recognized when the basic revenue recognition criteria are met for that element. We limit the amount of revenue recognized for delivered elements to an amount that is not contingent upon future delivery of additional products or services or meeting of any specified performance conditions. Whenever possible, we determine VSOE for each element based on historical stand-alone sales to third parties. For maintenance and support, training and consulting, and subscription services, we determine the VSOE of fair value based on our history of stand-alone sales demonstrating that a substantial majority of transactions fall within a narrow range for each service offering. We historically have not been able to determine TPE for our products, maintenance and support, training or consulting services. TPE is determined based on competitor prices for similar elements when sold separately. Generally, our offerings contain a significant level of differentiation such that the comparable pricing of products with similar functionality cannot be obtained. Furthermore, our go-to-market strategy differs from that of our peers and we are unable to reliably determine what similar competitor products' selling prices are on a stand-alone basis. When we are unable to establish the selling price of an element using VSOE or TPE, we use BESP in our allocation of consideration to various elements under the arrangement. The objective of BESP is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. The BESP is established based on internal and external factors, including pricing practices such as discounting, cost of products, the geographies in which we offer our products and services, and customer classes and distribution channels (e.g. distributor, value-added reseller and direct end-user). The determination of BESP is made through consultation with and approval by our management, taking into consideration our pricing model and go-to-market strategy. For our non-software deliverables, we generally determine relative selling price based on BESP. However, for our maintenance and support, training and consulting, and subscription services, we generally use VSOE to determine relative selling price. When we are unable to establish selling price using VSOE for our maintenance and support, training and consulting, and subscription services, we use BESP in our allocation of arrangement consideration. We regularly review VSOE and BESP data provided by actual transactions to update these estimates and the relative selling prices allocated to each element. Deferred Revenue, Net Deferred revenue, net represents amounts invoiced to customers, less related cost of revenue, for which the related revenue has not been recognized because one or more of the revenue recognition criteria have not been met. The current portion of deferred revenue represents the amounts that are expected to be recognized as revenue within one year of the consolidated balance sheet date. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at invoiced amounts, net of allowances for doubtful accounts if applicable, and do not bear interest. We evaluate the collectability of our accounts receivable based on known collection risks and historical experience. In circumstances where we are aware of a specific customer's inability to meet its financial obligations to us (e.g., bankruptcy filings or substantial downgrading of credit ratings), we record a specific reserve for bad debts against amounts due to reduce the net recognized receivable to the amount we reasonably believe will be collected. For all other customers, we record reserves for bad debts based on the length of time the receivables are past due and our historical experience of collections and write-offs. If circumstances change, such as higher-than-expected defaults or an unexpected material adverse change in a major customer's ability to meet its financial obligations, our estimate of the recoverability of the amounts due could be reduced by a material amount. Concentration of Revenue and Accounts Receivable Significant customers are those which represent more than 10% of our total net revenue or gross accounts receivable balance at each respective balance sheet date. We had one distributor, Exclusive Networks, which accounted for 14.8% , 10.8% and 10.5% of our total net revenue for fiscal years 2016 , 2015 and 2014 . As of July 31, 2016 and 2015 , Exclusive Networks accounted 17.1% and 12.1% of our total gross accounts receivable. Shipping and Handling Shipping charges billed to customers are included in revenue and the related shipping costs are included in cost of revenue. Research and Development Costs Software development costs incurred in the research and development of new products and enhancements to existing products are charged to expense as incurred. Software development costs are capitalized after technological feasibility has been established. The period between achievement of technological feasibility, which we define as the establishment of a working model, and the general availability of such software to customers has been short, resulting in software development costs qualifying for capitalization being insignificant. Accordingly, we did not capitalize any software development costs during the years ended July 31, 2016 , 2015 and 2014 . Stock-Based Compensation We recognize share-based compensation expense for all share-based payment awards including employee stock options, RSUs, MSUs and purchases under our ESPP based on each award's fair value on the grant date. We utilize the BSM option pricing model in order to determine the fair value of stock options and ESPP. The BSM model requires various highly subjective assumptions that represent management's best estimates of volatility, risk-free interest rate, expected life, and dividend yield. We estimate expected volatility based on the historical volatility of the Company’s common stock over the most recent period commensurate with the estimated expected life of the Company’s stock options and ESPP. We determine the expected term of stock options using the simplified method which deems the term to be the average of the time-to-vesting and the contractual life of the options. The expected life of ESPP approximates the offering period. The fair value of the RSUs is determined using the closing price of our common stock on the date of the grant. Compensation is recognized on a straight-line basis over the requisite service period of each grant adjusted for estimated forfeitures. We use the Monte-Carlo simulation model to estimate the fair value of MSUs. As the MSUs contain a performance metric with a market condition (our stock performance relative to a market index), we recognize compensation cost for MSUs using the graded vesting approach and do not adjust the expense for subsequent changes in the expected outcome of the market-based vesting conditions. In addition, we are required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. We estimate the forfeiture rate based on historical experience and our expectations regarding future pre-vesting termination behavior of employees. Restructuring Charges In June 2016, we implemented a restructuring plan to reprioritize and reduce investments in all of our functions. The announced actions include steps intended to optimize program-based and discretionary spending; revise hiring priorities with a goal to support customer-facing sales coverage while improving overall sales and marketing efficiency; and reduce headcount in higher cost locations and for certain identified positions. As a result, we have recorded restructuring charges comprised principally of employee severance and associated termination costs related to the reduction of our workforce. Our restructuring plan includes one-time termination benefits which are recognized as a liability at estimated fair value when the approved plan has identified the number of employees, functions and associated estimated costs, the plan has been communicated to the employees, and changes to the terms of the plan are considered unlikely. Advertising Costs Advertising costs are charged to sales and marketing expenses as incurred in the consolidated statements of operations. Advertising expense during fiscal years 2016 , 2015 and 2014 was $0.6 million , $1.4 million and $1.3 million . Foreign Currency The functional currency of our foreign subsidiaries is the U.S. dollar. Transactions denominated in currencies other than the functional currency are remeasured at the average exchange rate in effect during the period. At the end of each reporting period, our subsidiaries' monetary assets and liabilities are remeasured to the functional currency using exchange rates in effect at the end of the reporting period. Non-monetary assets and liabilities are remeasured at historical exchange rates. Gains and losses related to remeasurement are recorded in other expense, net in the consolidated statements of operations. Foreign currency exchange losses included in other expense, net during fiscal years 2016 , 2015 and 2014 were $0.5 million , $1.4 million and $0.5 million . Income Taxes We account for income taxes under an asset and liability approach for deferred income taxes, which requires recognition of deferred income tax assets and liabilities for the expected future tax consequences of events that have been recognized in our consolidated financial statements, but have not been reflected in our taxable income. Estimates and judgments occur in the calculation of certain tax liabilities and in the determination of the recoverability of certain deferred income tax assets, which arise from temporary differences and carryforwards. Deferred income tax assets and liabilities are measured using the currently enacted tax rates that apply to taxable income in effect for the years in which those tax assets are expected to be realized or settled. We regularly assess the likelihood that our deferred income tax assets will be realized based on the realization guidance available. To the extent that we believe any amounts are not more-likely-than-not to be realized, we record a valuation allowance to reduce the deferred income tax assets. We regularly assess the need for the valuation allowance on our deferred tax assets, and to the extent that we determine that an adjustment is needed, such adjustment will be recorded in the period that the determination is made. We regularly review our tax positions and benefits to be realized. We recognize tax liabilities based upon our estimate of whether, and the extent to which, additional taxes will be due when such estimates are more-likely-than-not to be sustained. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained. We recognize interest and penalties related to income tax matters as income tax expense. For fiscal years 2016 , 2015 and 2014 , we did not incur any interest or penalties associated with unrecognized tax benefits. Segment Information Operating segments are components of an enterprise for which separate financial information is available and is evaluated regularly by our chief operating decision maker in deciding how to allocate resources and assessing performance. Our chief operating decision maker is our chief executive officer. Our chief executive officer reviews financial information presented on a consolidated basis, 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 beyond revenue goals or gross margins, or plans for levels or components below the consolidated unit level. Accordingly, we have a single reporting segment. Recently Issued Accounting Pronounc |
