Income Taxes	9 Months Ended
Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our income tax provision (benefit) was primarily due to taxes on international operations and state income taxes. The difference between the income tax provision (benefit) that would be derived by applying the statutory rate to our loss before income taxes and the income tax provision (benefit) recorded was primarily attributable to changes in our valuation allowance, non-deductible stock-based compensation expense and the tax rate differential between the U.S. and foreign countries. In connection with the StorReduce acquisition, we recorded a net deferred tax liability which provides an additional source of taxable income to support the realizability of the pre-existing deferred tax assets and, accordingly, during the three months ended October 31, 2018, we released $3.7 million of our U.S. valuation allowance. We continue to maintain a valuation allowance for our U.S. Federal and state deferred tax assets. As of October 31, 2018, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended January 31, 2018. The Tax Act was signed into law on December 22, 2017. The new legislation decreases the U.S. corporate federal income tax rate from 35% to 21% effective January 1, 2018. The Tax Act also includes a number of other provisions including the elimination of loss carrybacks and limitations on the use of future losses, limitations on the deductibility of executive compensation, limitation or modification on the deductibility of certain business expenses, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and the introduction of a base erosion and anti-abuse tax. Under the Tax Act, the Global Intangible Low-Taxed Income (GILTI) provision taxes foreign income in excess of a deemed return on tangible assets of foreign corporations. Under U.S. GAAP, companies are allowed to make an accounting policy election to either (i) account for GILTI as a component of tax expense in the period in which a company is subject to the rules -- the period cost method, or (ii) account for GILTI in a company’s measurement of deferred taxes -- the deferred method. Because of the complexity of the new tax rules, we have not yet made an accounting policy election and are continuing to assess the impact of the Tax Act during the one-year measurement period from the Tax Act enactment date as allowed by Staff Accounting Bulletin No. 118 (SAB 118) issued in connection with the Tax Act. We expect to complete the accounting for the tax effects of the Tax Act in calendar year 2018.

Income Taxes

Our income tax provision (benefit) was primarily due to taxes on international operations and state income taxes. The difference between the income tax provision (benefit) that would be derived by applying the statutory rate to our loss before income taxes and the income tax provision (benefit) recorded was primarily attributable to changes in our valuation allowance, non-deductible stock-based compensation expense and the tax rate differential between the U.S. and foreign countries.

In connection with the StorReduce acquisition, we recorded a net deferred tax liability which provides an additional source of taxable income to support the realizability of the pre-existing deferred tax assets and, accordingly, during the three months ended October 31, 2018, we released $3.7 million of our U.S. valuation allowance. We continue to maintain a valuation allowance for our U.S. Federal and state deferred tax assets.

As of October 31, 2018, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended January 31, 2018.

The Tax Act was signed into law on December 22, 2017. The new legislation decreases the U.S. corporate federal income tax rate from 35% to 21% effective January 1, 2018.

The Tax Act also includes a number of other provisions including the elimination of loss carrybacks and limitations on the use of future losses, limitations on the deductibility of executive compensation, limitation or modification on the deductibility of certain business expenses, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and the introduction of a base erosion and anti-abuse tax. Under the Tax Act, the Global Intangible Low-Taxed Income (GILTI) provision taxes foreign income in excess of a deemed return on tangible assets of foreign corporations. Under U.S. GAAP, companies are allowed to make an accounting policy election to either (i) account for GILTI as a component of tax expense in the period in which a company is subject to the rules -- the period cost method, or (ii) account for GILTI in a company’s measurement of deferred taxes -- the deferred method. Because of the complexity of the new tax rules, we have not yet made an accounting policy election and are continuing to assess the impact of the Tax Act during the one-year measurement period from the Tax Act enactment date as allowed by Staff Accounting Bulletin No. 118 (SAB 118) issued in connection with the Tax Act. We expect to complete the accounting for the tax effects of the Tax Act in calendar year 2018.