Income Taxes	3 Months Ended
Apr. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (“Tax Act”). The Tax Act reduces the U.S. federal corporate tax rate from 34% to 21%, imposes a one-time repatriation tax, and numerous other provisions transitioning to a territorial system. The changes included in the Tax Act are broad and complex. The SEC has issued SAB 118 that would allow for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts. We currently anticipate finalizing and recording any resulting adjustments by the year ending January 31, 2019. The Tax Act also includes provisions for Global Intangible Low-Taxed Income (“GILTI”) wherein taxes on foreign income are imposed in excess of a deemed return on tangible assets of foreign corporations. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make the related election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. Given the complexity of the GILTI provisions, we are still evaluating the effects of the GILTI provisions and have not yet determined the related election. At April 30, 2018, because we are still evaluating the GILTI provisions and its analysis of future taxable income that is subject to GILTI, we are unable to make a reasonable estimate and have not reflected any adjustments related to GILTI in our financial statements. Utilization of the federal and state NOLs may be subject to substantial annual limitation due to the ownership change limitations provided by Section 382 of the Internal Revenue Code of 1986, as amended, and similar state provisions. The annual limitation may result in the expiration of net operating losses and credits before utilization. We evaluate tax positions for recognition using a more-likely-than-not recognition threshold, and those tax positions eligible for recognition are measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon the effective settlement with a taxing authority that has full knowledge of all relevant information. We file tax returns in the United States for federal, California, and other states. All tax years remain open to examination for both federal and state purposes as a result of our net operating loss and credit carryforwards. We began to file foreign tax returns in the United Kingdom starting with the year ended January 31, 2013, in France, Germany and Japan starting with the year ended January 31, 2014, in Canada starting with the year ended January 31, 2015, and in Australia, Sweden, and Netherlands starting with the year ended January 31, 2016. Certain tax years remain open to examination. As a result of our adoption of ASC Topic 606 as of February 1, 2018, the $9.8 million decrease of deferred revenue and the $29.4 million increase to deferred commissions resulted in additional deferred tax liabilities that reduced our net deferred tax asset position. The net deferred tax assets in the jurisdictions impacted by the adoption of ASC Topic 606 were fully reserved and, accordingly, this impact was offset by a corresponding reduction to the valuation allowance with no resulting net impact to our net assets or accumulated deficit. We believe that we have provided adequate reserves for our income tax uncertainties in all open tax years. We do not expect our gross unrecognized tax benefits to change significantly over the next 12 months.

Note 10. Income Taxes

On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (“Tax Act”). The Tax Act reduces the U.S. federal corporate tax rate from 34% to 21%, imposes a one-time repatriation tax, and numerous other provisions transitioning to a territorial system. The changes included in the Tax Act are broad and complex. The SEC has issued SAB 118 that would allow for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts. We currently anticipate finalizing and recording any resulting adjustments by the year ending January 31, 2019.

The Tax Act also includes provisions for Global Intangible Low-Taxed Income (“GILTI”) wherein taxes on foreign income are imposed in excess of a deemed return on tangible assets of foreign corporations. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make the related election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. Given the complexity of the GILTI provisions, we are still evaluating the effects of the GILTI provisions and have not yet determined the related election. At April 30, 2018, because we are still evaluating the GILTI provisions and its analysis of future taxable income that is subject to GILTI, we are unable to make a reasonable estimate and have not reflected any adjustments related to GILTI in our financial statements.

Utilization of the federal and state NOLs may be subject to substantial annual limitation due to the ownership change limitations provided by Section 382 of the Internal Revenue Code of 1986, as amended, and similar state provisions. The annual limitation may result in the expiration of net operating losses and credits before utilization.

We evaluate tax positions for recognition using a more-likely-than-not recognition threshold, and those tax positions eligible for recognition are measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon the effective settlement with a taxing authority that has full knowledge of all relevant information.

We file tax returns in the United States for federal, California, and other states. All tax years remain open to examination for both federal and state purposes as a result of our net operating loss and credit carryforwards. We began to file foreign tax returns in the United Kingdom starting with the year ended January 31, 2013, in France, Germany and Japan starting with the year ended January 31, 2014, in Canada starting with the year ended January 31, 2015, and in Australia, Sweden, and Netherlands starting with the year ended January 31, 2016. Certain tax years remain open to examination.

As a result of our adoption of ASC Topic 606 as of February 1, 2018, the $9.8 million decrease of deferred revenue and the $29.4 million increase to deferred commissions resulted in additional deferred tax liabilities that reduced our net deferred tax asset position. The net deferred tax assets in the jurisdictions impacted by the adoption of ASC Topic 606 were fully reserved and, accordingly, this impact was offset by a corresponding reduction to the valuation allowance with no resulting net impact to our net assets or accumulated deficit.

We believe that we have provided adequate reserves for our income tax uncertainties in all open tax years. We do not expect our gross unrecognized tax benefits to change significantly over the next 12 months.