Summary of Significant Accounting Policies | Note 2. Summary of Significant Accounting Policies Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the amounts reported and disclosed in the financial statements and the accompanying notes. Actual results could differ from these estimates. Such estimates include, but are not limited to, the determination of the allowance for accounts receivable, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, best estimate of selling price included in multiple-deliverable revenue arrangements, fair values of stock-based awards, legal contingencies, and the provision for income taxes, including related reserves, among others. Management bases its estimates on historical experience and on various other assumptions which management believes to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Revenue Recognition We derive our revenue from three sources: (1) subscription revenue, which is comprised of subscription fees from customers utilizing our cloud-based enterprise content management and collaboration services and other subscription-based services We recognize revenue when all of the following conditions are met: · there is persuasive evidence of an arrangement; · the service has been provided to the customer; · the collection of fees is reasonably assured; and · the amount of fees to be paid by the customer is fixed or determinable. We typically invoice our customers at the beginning of the term, in multiyear, annual, quarterly or monthly installments. Our subscription and support contracts are typically non-cancellable and do not contain refund-type provisions. In instances where we collect fees in advance of service delivery, revenue under the contract is deferred until we successfully deliver such services. Subscription revenue is recognized ratably over the period of the subscription beginning once all requirements for revenue recognition have been met, including provisioning the service so that it is available to our customers. Premier support is sold together with the subscription services, and the term of the premier support is generally the same as the related subscription services arrangement. Accordingly, we recognize premier support revenue in the same manner as the associated subscription hosting service. Professional services revenue is recognized as the services are rendered for time and material contracts, and using the proportional performance method over the period the services are performed for fixed price contracts. We assess collectability based on a number of factors, such as past collection history and creditworthiness of the customer. If management determines collectability is not reasonably assured, we defer revenue recognition until collectability becomes reasonably assured. Our arrangements can include multiple elements which may consist of some or all of subscription services, premier support and professional services. When multiple-element arrangements exist, we evaluate whether these individual deliverables should be accounted for as separate units of accounting or one single unit of accounting. In order to treat deliverables in a multiple-element arrangement as separate units of accounting, the delivered item or items must have standalone value upon delivery. A delivered item has standalone value to the customer when either (1) any vendor sells that item separately or (2) the customer could resell that item on a standalone basis. Our subscription services have standalone value as such services are often sold separately. Our premier support services do not have standalone value because we and other vendors do not sell premier support services separately. Our professional services have standalone value because there are other vendors which sell the same professional services separately. For new services, we assess standalone value consistently with the foregoing policy. Accordingly, we consider the separate units of accounting in our multiple deliverable arrangements to be the professional services, subscription services or a combined deliverable comprised of subscription services and premier support services. When multiple deliverables included in an arrangement are separable into different units of accounting, the arrangement consideration is allocated to the identified separate units of accounting based on their relative selling price. Multiple-element arrangement accounting guidance provides a hierarchy to use when determining the relative selling price for each unit of accounting. Vendor-specific objective evidence (VSOE) of selling price, based on the price at which the item is regularly sold by the vendor on a standalone basis, should be used if it exists. If VSOE of selling price is not available, third-party evidence (TPE) of selling price is used to establish the selling price if it exists. We have not established VSOE for our subscription services, premier support or professional services due to lack of pricing consistency, the introduction of new services and other factors. We have also concluded that third-party evidence of selling price is not a practical alternative due to differences in our service offerings compared to other parties and the availability of relevant third-party pricing information. Accordingly, we use our best estimate of selling price (BESP) to determine the relative selling price for our subscription, premier support and professional services offerings. For arrangements with multiple deliverables which can be separated into different units of accounting, we allocate the arrangement fee to the separate units of accounting based on our BESP. The amount of arrangement fee allocated is limited by contingent revenue, if any. We determined BESP by considering our overall pricing objectives and market conditions. Significant pricing practices taken into consideration for our subscription services, which may also include premier support, and professional services, include discounting practices, the size and volume of our transactions, the customer demographic, the geographic area where services are sold, price lists, our go-to-market strategy, historical standalone sales and contract prices. The determination of BESP is made through consultation with and approval by our management, taking into consideration the go-to-market strategy. As our go-to-market strategies evolve, we may modify our pricing practices in the future, which could result in changes in relative selling prices. Deferred Commissions Deferred commissions consist of direct incremental costs paid to our sales force associated with non-cancellable terms of the related contracts. The deferred commission amounts are recoverable through future revenue streams under the non-cancellable customer contracts. Direct sales commissions are deferred when earned and amortized over the same period that revenue is recognized for the related non-cancellable subscription period. Amortization of deferred commissions is included in sales and marketing expense in the consolidated statements of operations. Cost of Revenue Cost of revenue consists primarily of costs related to providing our subscription services to our paying customers, including employee compensation and related expenses for datacenter operations, customer support and professional services personnel, payments to outside technology service providers, depreciation of servers and equipment, security services and other tools, as well as amortization of acquired technology. We allocate overhead such as rent, information technology costs and employee benefit costs to all departments based on headcount. As such, general overhead expenses are reflected in cost of revenue and each of the operating expense categories set forth below. We expect our cost of revenue to increase in dollars and may increase as a percentage of revenue as we continue to invest in our datacenter operations and customer support to support the growth of our business, our customer base, as well as our international expansion. Deferred Revenue Deferred revenue consists of billings and payments received in advance of revenue recognition generated by our subscription services, premier customer support and professional services described above. For these services, we typically invoice our customers at the beginning of the term, in multiyear, annual, quarterly or monthly installments. Accordingly, the deferred revenue balance does not represent the total contract value of annual or multiyear, non-cancellable subscription contracts. Certain Risks and Concentrations Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, restricted cash and accounts receivable. Although we deposit our cash with multiple financial institutions, our deposits, at times, may exceed federally insured limits. We sell to a broad range of customers. Our revenue is derived substantially from the United States across a multitude of industries. Accounts receivable are derived from the delivery of our services to customers primarily located in the United States. We accept and settle our accounts receivable using credit cards, electronic payments and checks. A majority of our lower dollar value invoices are settled by credit card on or near the date of the invoice. We do not require collateral from customers to secure accounts receivable. We maintain an allowance for accounts receivable based upon the expected collectability, which takes into consideration specific customer creditworthiness and current economic trends. We believe collections of our accounts receivable are reasonably assured based on the size, industry diversification, financial condition and past transaction history of our customers. As of April 30, 2016 and January 31, 2016, no single customer accounted for more than 10% of total accounts receivable. No single customer represented over 10% of revenue during the three months ended April 30, 2016 and 2015. We serve our customers and users from datacenter facilities operated by third parties. In order to reduce the risk of down time of our enterprise cloud content management services, we have established datacenters in various locations in the United States. We have internal procedures to restore services in the event of disaster at any one of our current datacenter facilities. Even with these procedures for disaster recovery in place, our cloud services could be significantly interrupted during the implementation of the procedures to restore services. Geographic Locations Revenue attributed to the United States was 83% and 80% for the three months ended April 30, 2016 and 2015, respectively. No other country outside of the United States comprised 10% or greater of our revenue for all periods presented. Substantially all of our net assets are located in the United States. As of April 30, 2016 and January 31, 2016, property and equipment located in the United States was 99% and 98%, respectively. Foreign Currency Translation and Transactions The functional currency of our principal foreign subsidiaries is generally the U.S. dollar. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars for those entities that do not have U.S. dollars as their functional currency are recorded as part of a separate component of the consolidated statements of comprehensive loss. Foreign currency transaction gains and losses are included in the consolidated statements of operations for the period. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenue and expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates. Translation adjustments at the balance sheet dates were not material. Transaction gains and losses recognized were not material for all periods presented. Cash and Cash Equivalents We consider all highly liquid investments with an initial maturity of 90 days or less at the date of purchase to be cash equivalents. We maintain such funds in overnight cash deposits. Restricted Cash Restricted cash is comprised of certificates of deposit and money market funds related to our credit card processing and leases. Marketable Securities Our marketable securities consist of asset-backed securities. We classify our marketable securities as available-for-sale at the time of purchase and reevaluate such classification as of each balance sheet date. We may sell these securities at any time for use in current operations or for other purposes, such as consideration for acquisitions, even if they have not yet reached maturity. As a result, we classify our marketable securities, including securities with maturities beyond twelve months, as current assets in the accompanying consolidated balance sheets. All marketable securities are recorded at their estimated fair value. Unrealized gains and losses for available-for-sale securities are recorded in other comprehensive income (loss). We evaluate our marketable securities to assess whether those with unrealized loss positions are other than temporarily impaired. We consider impairments to be other than temporary if they are related to deterioration in credit risk or if it is likely we will sell the securities before the recovery of their cost basis. Realized gains and losses and declines in value deemed to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net in the consolidated statements of operations. Fair Value of Financial Instruments Our financial assets and financial liabilities which include cash equivalents, marketable securities, restricted cash and redeemable convertible preferred stock warrants are measured and recorded at fair value on a recurring basis. We measure certain other assets including our non-marketable equity securities at fair value on a nonrecurring basis when they are deemed to be other-than-temporarily impaired. Our other current financial assets have fair values which approximate their carrying value due to their short term maturities. Accounts Receivable and Related Allowance Accounts receivable are recorded at the invoiced amounts and do not bear interest. We maintain an allowance for estimated losses inherent in our accounts receivable portfolio. We assess the collectability of the accounts by taking into consideration the aging of our trade receivables, historical experience, and management judgment. We write off trade receivables against the allowance when management determines a balance is uncollectible and no longer actively pursues collection of the receivable. Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization is computed using the straight-line method over the estimated useful lives of the respective assets, generally two to three years. Leasehold improvements are amortized over the shorter of their estimated useful lives or the remaining lease term. Depreciation commences once the asset is placed in service. Construction in progress is primarily related to the construction or development of property and equipment which have not yet been placed in service for their intended use. Business Combinations We allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired users, acquired technology, and trade names from a market participant perspective, useful lives and discount rates. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. Long-Lived Assets, Including Goodwill and Other Acquired Intangible Assets We evaluate the recoverability of property and equipment and finite-lived intangible assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of these assets is measured by a comparison of the carrying amounts to the future undiscounted cash flows the assets are expected to generate. If such review indicates that the carrying amount of property and equipment and intangible assets is not recoverable, the carrying amount of such assets is reduced to fair value. We have not recorded any significant impairment charge during the years presented. We review goodwill for impairment at least annually or more frequently if events or changes in circumstances indicate that the carrying value of goodwill may not be recoverable. We have elected to first assess the qualitative factors to determine whether it is more likely than not that the fair value of our single reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. If we determine that it is more likely than not that its fair value is less than its carrying amount, then the two-step goodwill impairment test will be performed. The first step, identifying a potential impairment, compares the fair value of the reporting unit with its carrying amount. If the carrying amount exceeds its fair value, the second step will be performed; otherwise, no further step is required. The second step, measuring the impairment loss, compares the implied fair value of the goodwill with the carrying amount of the goodwill. Any excess of the goodwill carrying amount over the implied fair value is recognized as an impairment loss, and the carrying value of goodwill is written down to fair value. Acquired finite-lived intangible assets are typically amortized on a straight-line basis over the estimated useful lives of the assets, which is generally two to seven years. Legal Contingencies From time to time, we are a party of litigation and subject to claims that arise in the ordinary course of business. We investigate these claims as they arise, and accrue estimates for resolution of legal and other contingencies when losses are probable and estimable. Because the results of litigation and claims cannot be predicted with certainty, we base our loss accruals on the best information available at the time. As additional information becomes available, we reassess our potential liability and may revise our estimates. Such revisions could have a material impact on future quarterly or annual results of operations. Research and Development Costs Research and development costs include personnel costs, including stock-based compensation expense, associated with our engineering personnel and consultants responsible for the design, development and testing of the product, depreciation of equipment used in research and development and allocated facilities and information technology costs. Research and development costs are expensed as incurred. Internal-Use Software Costs We capitalize costs to develop software for internal use incurred during the application development stage. Costs related to preliminary project activities and post implementation activities are expensed as incurred. Once an application has reached the development stage, management has authorized and committed to the funding of the software project, it is probable the project will be completed and the software will be used to perform the function intended, internal and external costs, if direct and incremental, are capitalized until the application is substantially complete and ready for its intended use. There were no material qualifying costs incurred during the application development stage in any of the periods presented. Advertising Costs Advertising costs are expensed as incurred and are included in sales and marketing expense. Stock-Based Compensation We determine the fair value of stock options and purchase rights issued to employees under our 2015 Equity Incentive Plan (2015 Plan) and 2015 Employee Stock Purchase Plan (2015 ESPP), on the date of grant using the Black-Scholes option pricing model, which is impacted by the fair value of our common stock, as well as changes in assumptions regarding a number of highly complex and subjective variables. These variables include, but are not limited to, the expected common stock price volatility over the term of the awards, the expected term of the awards, risk-free interest rates and the expected dividend yield. We recognize compensation expense for stock options, restricted stock units and restricted stock on a straight-line basis over the period during which an employee is required to provide services in exchange for the award (generally the vesting period of the award). We estimate future forfeitures at the date of grant and revise the estimates, if necessary, in subsequent periods if actual forfeitures differ from those estimates. We recognize compensation expense for our 2015 ESPP on a straight-line basis. Compensation expense for stock options issued to nonemployees is calculated using the Black-Scholes option pricing model and is recorded over the service performance period. Options subject to vesting are required to be periodically remeasured over their service performance period, which is generally the same as the vesting period. Income Taxes We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the temporary differences between the financial statement and tax basis of assets and liabilities using the enacted tax rates in effect for the years in which the differences are expected to reverse. The effect on deferred taxes of a change in income tax rates is recognized in the consolidated statements of operations in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts we believe is more likely than not to be realized. We recognize tax benefits from uncertain tax positions only if we believe that it is more likely than not that the tax position will be sustained on examination by the taxing authorities based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. Recently Issued Accounting Pronouncements In April 2016, the FASB issued ASU 2016-09, Compensation- Stock Compensation In February 2016, the FASB issued ASU 2016-02, Leases In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers for us beginning February 1, 2018, at which time we may adopt the new standard under either the full retrospective method or the modified retrospective method. Early adoption is permitted. We are currently evaluating the impact of the provisions of this new standard on our consolidated financial statements. Recently Adopted Accounting Pronouncements In April 2015, the FASB issued ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements—Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 EITF Meeting Simplifying the Presentation of Debt Issuance Costs In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments which eliminates the requirement to restate prior period financial statements for measurement period adjustments |