Description of Business and Basis of Presentation	9 Months Ended
Oct. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Note 1. Description of Business and Basis of Presentation Description of Business We were incorporated in the state of Washington in April 2005, and were reincorporated in the state of Delaware in March 2008. We changed our name from Box.Net, Inc. to Box, Inc. in November 2011. Box provides a leading cloud content management platform that enables organizations of all sizes to securely manage cloud content while allowing easy, secure access and sharing of this content from anywhere, on any device. Basis of Presentation The accompanying condensed consolidated balance sheet as of October 31, 2017 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three and nine months ended October 31, 2017 and 2016, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2017 was derived from the audited consolidated financial statements that are included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2017 (the “Form 10-K”), which was filed with the Securities and Exchange Commission (the “SEC”) on March 24, 2017. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in our Form 10-K. Other than items discussed under Recently Adopted Accounting Pronouncements, there have been no other material changes to our critical accounting policies and estimates during the nine months ended October 31, 2017 from those disclosed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Form 10-K. The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of our management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2017, and our results of operations, including our comprehensive loss, and our cash flows for the three and nine months ended October 31, 2017 and 2016. All adjustments are of a normal recurring nature. The results for the three and nine months ended October 31, 2017 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2018. Certain prior year balances have been reclassified to conform to the current year presentation. Such reclassifications did not affect total revenues, operating income or net income. 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. Certain Risks and Concentrations Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, 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, including resellers. 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 October 31, 2017, one customer, which was a reseller, accounted for more than 10% of total accounts receivable. As of January 31, 2017, two customers, which were both resellers, accounted for more than 10% of total accounts receivable. No single customer, including resellers, represented over 10% of revenue for the three and nine months ended October 31, 2017 and 2016. 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 services, we have established datacenters and third-party cloud computing and hosting providers in various locations in the United States and abroad. 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 For the three and nine months ended October 31, 2017, revenue attributable to customers in the United States and customers outside the United States was 79% and 21%, respectively. For the three and nine months ended October 31, 2016, revenue attributable to customers in the United States and customers outside the United States was 83% and 17%, respectively. No other country outside of the United States comprised 10% or greater of our revenue for any of the periods presented. Substantially all of our net assets are located in the United States. As of October 31, 2017 and January 31, 2017, property and equipment located in the United States was 98.7% and 99.7%, respectively. Recently Issued Accounting Pronouncements In November 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (“ASU”) 2016-18, Statement of Cash Flows: Restricted Cash. ASU 2016-18 requires entities to show the changes in cash, cash equivalents, and restricted cash in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash in the statement of cash flows. As of October 31, 2017 and January 31, 2017, we had $26.5 million and $26.8 million in restricted cash, respectively. Restricted cash consists of certificates of deposits related to our leases. The new standard is effective for us beginning February 1, 2018, with early adoption permitted. The new standard should be applied using a retrospective transition method to each period presented. We expect the adoption of ASU 2016-18 will have a material impact on our consolidated statement of cash flows and related disclosures due to the release of $26.0 million in restricted cash disclosed under Note 12. In June 2016, the FASB issued ASU 2016-13, Financial Instruments- Credit Losses. ASU 2016-13 replaces the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The new standard is effective for us beginning February 1, 2020 with early adoption permitted. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. We are currently evaluating the impact of the provisions of this new standard on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 requires lessees to put most leases on their balance sheet while recognizing expense in a manner similar to existing accounting. The new accounting guidance is effective for us beginning February 1, 2019 with early adoption permitted. We will be required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. We are currently evaluating the impact of the provisions of this new standard on our consolidated financial statements. In May 2014, the FASB issued ASU 2014-09 regarding ASC Topic 606, Revenue from Contracts with Customers. The standard provides principles for recognizing revenue for the transfer of promised goods or services to customers with the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also provides guidance on the recognition of sales commission costs related to obtaining customer contracts. In addition, the FASB issued subsequent ASUs, which serve to clarify certain aspects of ASU 2014-09. The standard will be effective for us beginning February 1, 2018; we have elected not to adopt the standard earlier. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). We currently anticipate adopting the standard using the modified retrospective method, which will result in a cumulative effect adjustment. We have established a cross-functional team to implement the new standard with respect to the recognition of revenue from contracts with customers. We have identified, and are in the process of implementing, appropriate changes to our business processes, systems and controls to support recognition and disclosure under the new standard. Based on our ongoing evaluation, we expect this ASU will impact our capitalization and amortization of sales commissions, the timing of our revenue recognition for certain sales contracts, and their related disclosures. We expect a change to the period over which we amortize sales commissions in order to align them to an expected benefit period of five years. We also expect a change to the scope of capitalized sales commissions based on the definition of incremental costs of obtaining a contract. While we have not finalized the assessment on the new commissions policy, we believe the new commissions policy will have a material impact on our consolidated financial statements, resulting in lower commissions expense over at least the first twelve-month period post adoption. In addition, we expect a change in the timing of revenue recognition for certain sales contracts due primarily to the removal of the current limitation on contingent revenue. We have not yet determined whether the potential impact on revenue will be material to our consolidated financial statements and related disclosures as future sales contracts up to the date of our adoption still may impact our assessment. We continue to assess the potential impact of this ASU on our consolidated financial statements and related disclosures and, as such, our preliminary conclusions remain subject to change. Recently Adopted Accounting Pronouncements In January 2017, FASB issued ASU 2017-04, Intangibles-Goodwill and Other: Simplifying the Test for Goodwill Impairment. ASU 2017-04 simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new standard is effective for us beginning February 1, 2020, with early adoption permitted. We elected to early adopt ASU 2107-04 during the second quarter of fiscal year 2018. The adoption of this ASU had no impact on our condensed consolidated financial statements. We expect that adoption of this ASU will simplify the evaluation and recording of goodwill impairment charges, if any. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payment. ASU 2016-15 provides guidance on the classification of eight cash flow issues in order to reduce diversity in practice. As required by ASU 2016-15, contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities. Payments made thereafter should be classified as cash outflows for financing activities up to the amount of the original contingent consideration liability. Payments made in excess of the amount of the original contingent consideration liability should be classified as cash outflows for operating activities. The new standard is effective for us beginning February 1, 2018 with early adoption permitted. We elected to early adopt ASU 2016-15 during the second quarter of fiscal year 2018. The new standard requires application using a retrospective transition method. We have evaluated the impact on a quantitative and qualitative basis and concluded it was not material to any of prior periods presented. In April 2016, the FASB issued ASU 2016-09, Compensation- Stock Compensation: Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 changes the accounting for certain aspects of share-based payments to employees. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement. In addition, cash flows related to excess tax benefits will be presented as an operating activity on the cash flow statement. The standard also allows entities to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting, clarifies that all cash payments made on an employee’s behalf for withheld shares should be presented as a financing activity on the cash flow statement, and provides an accounting policy election to account for forfeitures as they occur. We adopted ASU 2016-09 during the first quarter of fiscal year 2018. As required by the standard, excess tax benefits recognized on stock-based compensation expense were prospectively reflected in our condensed consolidated statements of income as a component of the provision for income taxes rather than on the condensed consolidated balance sheet as a paid-in capital. Included in our net operating loss and research and development tax credit carryforwards are approximately $25.2 million of excess tax benefits from employee stock option exercises, for which we have not realized a deferred tax asset since it is fully offset by a valuation allowance, resulting in no impact to our condensed consolidated financial statements including any cumulative effect to accumulated deficit from previously unrecognized excess tax benefits. Our policy has been to classify cash flows related to excess tax benefits as part of operating activities and cash payments made on employee’s behalf for withheld shares as part of financing activities, and thus, the adoption of this standard had no effect on our condensed consolidated statements of cash flows. Further, we did not elect an accounting policy change to record forfeitures as they occur and thus will continue to estimate the number of forfeitures expected to occur. Other amendments in the guidance did not impact our condensed consolidated financial statements.

Note 1. Description of Business and Basis of Presentation

Description of Business

We were incorporated in the state of Washington in April 2005, and were reincorporated in the state of Delaware in March 2008. We changed our name from Box.Net, Inc. to Box, Inc. in November 2011. Box provides a leading cloud content management platform that enables organizations of all sizes to securely manage cloud content while allowing easy, secure access and sharing of this content from anywhere, on any device.

Basis of Presentation

The accompanying condensed consolidated balance sheet as of October 31, 2017 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three and nine months ended October 31, 2017 and 2016, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2017 was derived from the audited consolidated financial statements that are included in our Annual Report on Form 10-K for the fiscal year ended January 31, 2017 (the “Form 10-K”), which was filed with the Securities and Exchange Commission (the “SEC”) on March 24, 2017. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in our Form 10-K. Other than items discussed under Recently Adopted Accounting Pronouncements, there have been no other material changes to our critical accounting policies and estimates during the nine months ended October 31, 2017 from those disclosed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Form 10-K.

The accompanying condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of our management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of our balance sheet as of October 31, 2017, and our results of operations, including our comprehensive loss, and our cash flows for the three and nine months ended October 31, 2017 and 2016. All adjustments are of a normal recurring nature. The results for the three and nine months ended October 31, 2017 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2018.

Certain prior year balances have been reclassified to conform to the current year presentation. Such reclassifications did not affect total revenues, operating income or net income.

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.

Certain Risks and Concentrations

Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, 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, including resellers. 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 October 31, 2017, one customer, which was a reseller, accounted for more than 10% of total accounts receivable. As of January 31, 2017, two customers, which were both resellers, accounted for more than 10% of total accounts receivable. No single customer, including resellers, represented over 10% of revenue for the three and nine months ended October 31, 2017 and 2016.

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 services, we have established datacenters and third-party cloud computing and hosting providers in various locations in the United States and abroad. 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

For the three and nine months ended October 31, 2017, revenue attributable to customers in the United States and customers outside the United States was 79% and 21%, respectively. For the three and nine months ended October 31, 2016, revenue attributable to customers in the United States and customers outside the United States was 83% and 17%, respectively. No other country outside of the United States comprised 10% or greater of our revenue for any of the periods presented.

Substantially all of our net assets are located in the United States. As of October 31, 2017 and January 31, 2017, property and equipment located in the United States was 98.7% and 99.7%, respectively.

Recently Issued Accounting Pronouncements

In November 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (“ASU”) 2016-18, Statement of Cash Flows: Restricted Cash. ASU 2016-18 requires entities to show the changes in cash, cash equivalents, and restricted cash in the statement of cash flows. Entities will no longer present transfers between cash and cash equivalents and restricted cash in the statement of cash flows. As of October 31, 2017 and January 31, 2017, we had $26.5 million and $26.8 million in restricted cash, respectively. Restricted cash consists of certificates of deposits related to our leases. The new standard is effective for us beginning February 1, 2018, with early adoption permitted. The new standard should be applied using a retrospective transition method to each period presented. We expect the adoption of ASU 2016-18 will have a material impact on our consolidated statement of cash flows and related disclosures due to the release of $26.0 million in restricted cash disclosed under Note 12.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments- Credit Losses. ASU 2016-13 replaces the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The new standard is effective for us beginning February 1, 2020 with early adoption permitted. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. We are currently evaluating the impact of the provisions of this new standard on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 requires lessees to put most leases on their balance sheet while recognizing expense in a manner similar to existing accounting. The new accounting guidance is effective for us beginning February 1, 2019 with early adoption permitted. We will be required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. We are currently evaluating the impact of the provisions of this new standard on our consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09 regarding ASC Topic 606, Revenue from Contracts with Customers. The standard provides principles for recognizing revenue for the transfer of promised goods or services to customers with the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also provides guidance on the recognition of sales commission costs related to obtaining customer contracts. In addition, the FASB issued subsequent ASUs, which serve to clarify certain aspects of ASU 2014-09. The standard will be effective for us beginning February 1, 2018; we have elected not to adopt the standard earlier. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). We currently anticipate adopting the standard using the modified retrospective method, which will result in a cumulative effect adjustment. We have established a cross-functional team to implement the new standard with respect to the recognition of revenue from contracts with customers. We have identified, and are in the process of implementing, appropriate changes to our business processes, systems and controls to support recognition and disclosure under the new standard.

Based on our ongoing evaluation, we expect this ASU will impact our capitalization and amortization of sales commissions, the timing of our revenue recognition for certain sales contracts, and their related disclosures. We expect a change to the period over which we amortize sales commissions in order to align them to an expected benefit period of five years. We also expect a change to the scope of capitalized sales commissions based on the definition of incremental costs of obtaining a contract. While we have not finalized the assessment on the new commissions policy, we believe the new commissions policy will have a material impact on our consolidated financial statements, resulting in lower commissions expense over at least the first twelve-month period post adoption. In addition, we expect a change in the timing of revenue recognition for certain sales contracts due primarily to the removal of the current limitation on contingent revenue. We have not yet determined whether the potential impact on revenue will be material to our consolidated financial statements and related disclosures as future sales contracts up to the date of our adoption still may impact our assessment. We continue to assess the potential impact of this ASU on our consolidated financial statements and related disclosures and, as such, our preliminary conclusions remain subject to change.

Recently Adopted Accounting Pronouncements

In January 2017, FASB issued ASU 2017-04, Intangibles-Goodwill and Other: Simplifying the Test for Goodwill Impairment. ASU 2017-04 simplifies the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test. Under current guidance, Step 2 of the goodwill impairment test requires entities to calculate the implied fair value of goodwill in the same manner as the amount of goodwill recognized in a business combination by assigning the fair value of a reporting unit to all of the assets and liabilities of the reporting unit. The carrying value in excess of the implied fair value is recognized as goodwill impairment. Under the new standard, goodwill impairment is recognized based on Step 1 of the current guidance, which calculates the carrying value in excess of the reporting unit’s fair value. The new standard is effective for us beginning February 1, 2020, with early adoption permitted.

We elected to early adopt ASU 2107-04 during the second quarter of fiscal year 2018. The adoption of this ASU had no impact on our condensed consolidated financial statements. We expect that adoption of this ASU will simplify the evaluation and recording of goodwill impairment charges, if any.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payment. ASU 2016-15 provides guidance on the classification of eight cash flow issues in order to reduce diversity in practice. As required by ASU 2016-15, contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities. Payments made thereafter should be classified as cash outflows for financing activities up to the amount of the original contingent consideration liability. Payments made in excess of the amount of the original contingent consideration liability should be classified as cash outflows for operating activities. The new standard is effective for us beginning February 1, 2018 with early adoption permitted.

We elected to early adopt ASU 2016-15 during the second quarter of fiscal year 2018. The new standard requires application using a retrospective transition method. We have evaluated the impact on a quantitative and qualitative basis and concluded it was not material to any of prior periods presented.

In April 2016, the FASB issued ASU 2016-09, Compensation- Stock Compensation: Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 changes the accounting for certain aspects of share-based payments to employees. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement. In addition, cash flows related to excess tax benefits will be presented as an operating activity on the cash flow statement. The standard also allows entities to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting, clarifies that all cash payments made on an employee’s behalf for withheld shares should be presented as a financing activity on the cash flow statement, and provides an accounting policy election to account for forfeitures as they occur.

We adopted ASU 2016-09 during the first quarter of fiscal year 2018. As required by the standard, excess tax benefits recognized on stock-based compensation expense were prospectively reflected in our condensed consolidated statements of income as a component of the provision for income taxes rather than on the condensed consolidated balance sheet as a paid-in capital. Included in our net operating loss and research and development tax credit carryforwards are approximately $25.2 million of excess tax benefits from employee stock option exercises, for which we have not realized a deferred tax asset since it is fully offset by a valuation allowance, resulting in no impact to our condensed consolidated financial statements including any cumulative effect to accumulated deficit from previously unrecognized excess tax benefits. Our policy has been to classify cash flows related to excess tax benefits as part of operating activities and cash payments made on employee’s behalf for withheld shares as part of financing activities, and thus, the adoption of this standard had no effect on our condensed consolidated statements of cash flows. Further, we did not elect an accounting policy change to record forfeitures as they occur and thus will continue to estimate the number of forfeitures expected to occur. Other amendments in the guidance did not impact our condensed consolidated financial statements.