Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
Oct. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Note 2. Basis of Presentation and Summary of Significant Accounting Policies Principles of Consolidation The condensed consolidated financial statements include the accounts of the company and our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Unaudited Interim Consolidated Financial Information The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in our prospectus (the Prospectus) filed pursuant to Rule 424(b) under the Securities Exchange Act of 1933, as amended, with the SEC on October 7, 2015. The condensed consolidated balance sheet as of January 31, 2015, included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by U.S. GAAP on an annual reporting basis. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2016 or any future period. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the financial statements and accompanying notes. Actual results could differ from these estimates. Such estimates include, but are not limited to, the determination of best estimate of selling price included in multiple-deliverable revenue arrangements, sales commissions, useful lives of intangible assets and property and equipment, fair values of stock-based awards, provision for income taxes, including related reserves, among others. Management bases its estimates on historical experience and on various other assumptions which are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Restricted Cash Restricted cash is comprised of certificates of deposit related to our leases. As of January 31, 2015 and October 31, 2015, we had restricted cash of $4.6 million and $7.1 million, which was included in other long-term assets in the condensed consolidated balance sheets. Deferred Commissions Deferred commissions consist of direct and incremental costs paid to our sales force related to customer contracts. The deferred commission amounts are recoverable through the revenue streams that will be recognized under the related customer contracts. Direct sales commissions are deferred when earned and amortized over the same period that revenue is recognized from the related customer contract. Amortization of deferred commissions is included in sales and marketing expense in the condensed consolidated statements of operations. As of January 31, 2015 and October 31, 2015, we recorded short-term deferred commissions of $9.4 million and $13.6 million, and long-term deferred commissions of $7.5 million and $11.8 million, in other long-term assets in the condensed consolidated balance sheets. During the three and nine months ended October 31, 2014 and October 31, 2015, we recognized sales commission expenses of $11.7 million, $21.8 million, $16.5 million and $38.6 million, respectively. Recent Accounting Pronouncement Not Yet Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), requiring an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. ASU 2014-09 will supersede nearly all existing revenue recognition guidance under U.S. GAAP when it becomes effective. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers, deferring the effective date for ASU 2014-09 by one year, and thus, the new standard will be effective for us beginning on February 1, 2018 with early adoption permitted on or after February 1, 2017. This standard may be adopted using either the full or modified retrospective methods. We are currently evaluating adoption methods and the impact of this standard on our consolidated financial statements.

Note 2. Basis of Presentation and Summary of Significant Accounting Policies

Principles of Consolidation

The condensed consolidated financial statements include the accounts of the company and our wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Unaudited Interim Consolidated Financial Information

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in our prospectus (the Prospectus) filed pursuant to Rule 424(b) under the Securities Exchange Act of 1933, as amended, with the SEC on October 7, 2015.

The condensed consolidated balance sheet as of January 31, 2015, included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by U.S. GAAP on an annual reporting basis.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2016 or any future period.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the financial statements and accompanying notes. Actual results could differ from these estimates. Such estimates include, but are not limited to, the determination of best estimate of selling price included in multiple-deliverable revenue arrangements, sales commissions, useful lives of intangible assets and property and equipment, fair values of stock-based awards, provision for income taxes, including related reserves, among others. Management bases its estimates on historical experience and on various other assumptions which are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.

Restricted Cash

Restricted cash is comprised of certificates of deposit related to our leases. As of January 31, 2015 and October 31, 2015, we had restricted cash of $4.6 million and $7.1 million, which was included in other long-term assets in the condensed consolidated balance sheets.

Deferred Commissions

Deferred commissions consist of direct and incremental costs paid to our sales force related to customer contracts. The deferred commission amounts are recoverable through the revenue streams that will be recognized under the related customer contracts. Direct sales commissions are deferred when earned and amortized over the same period that revenue is recognized from the related customer contract. Amortization of deferred commissions is included in sales and marketing expense in the condensed consolidated statements of operations.

As of January 31, 2015 and October 31, 2015, we recorded short-term deferred commissions of $9.4 million and $13.6 million, and long-term deferred commissions of $7.5 million and $11.8 million, in other long-term assets in the condensed consolidated balance sheets. During the three and nine months ended October 31, 2014 and October 31, 2015, we recognized sales commission expenses of $11.7 million, $21.8 million, $16.5 million and $38.6 million, respectively.

Recent Accounting Pronouncement Not Yet Adopted

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), requiring an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. ASU 2014-09 will supersede nearly all existing revenue recognition guidance under U.S. GAAP when it becomes effective. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers, deferring the effective date for ASU 2014-09 by one year, and thus, the new standard will be effective for us beginning on February 1, 2018 with early adoption permitted on or after February 1, 2017. This standard may be adopted using either the full or modified retrospective methods. We are currently evaluating adoption methods and the impact of this standard on our consolidated financial statements.