INCOME TAXES	6 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES On December 22, 2017, the United States (“U.S.”) enacted comprehensive tax legislation commonly referred to as the "Tax Cuts and Jobs Act” (herein referred to as the "Act”). The Act makes broad and complex changes to the U.S. tax code, which could materially affect us. The Act reduced the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018 and requires companies to pay a one-time transition tax on the previously untaxed earnings of certain foreign subsidiaries. In addition, the Act makes other changes that may affect us. These changes include but are not limited to (1) a Base Erosion Anti-abuse Tax (BEAT), which is a new minimum tax, (2) generally eliminating U.S. federal income taxes on dividends from foreign subsidiaries, (3) a new provision that taxes global intangible low-taxed income (GILTI), (4) the repeal of the domestic production activity deduction, and (5) other base broadening provisions. The SEC issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act ("SAB 118"), which provides guidance on accounting for the Act’s impact. SAB 118 provides a measurement period, which should not extend beyond one year from the Act enactment date, during which a company acting in good faith may complete the accounting for the impact of the Act under ASC 740. In accordance with SAB 118, the income tax effects of the Act must be reflected in the reporting period in which the accounting under ASC Topic 740 is complete. To the extent the accounting for certain income tax effects of the Act is incomplete, we can determine a reasonable estimate for those effects and record a provisional estimate. We continue to evaluate the potential impact of the Act, and the amounts recorded in the fiscal year ended March 31, 2018 represented provisional estimates for certain identified income tax effects, for which the accounting is incomplete but a reasonable estimate was determined. Additional information and further analysis is required to determine the untaxed earnings of certain foreign subsidiaries and to evaluate the complexities of the new tax law along with additional interpretative guidance that may be issued. The impact of the Act may differ from these estimates, possibly materially, due to changes in interpretations and assumptions we have made, guidance that may be issued and actions we may take as a result of the Act. We expect to continue to analyze the Act and its impacts and record any adjustments to provisional estimates no later than the third quarter of the fiscal year ending March 31, 2019. We continue to review whether the Act will affect our existing intention to indefinitely reinvest earnings of our foreign subsidiaries and therefore have not recorded any tax liabilities associated with the repatriation of foreign earnings. The Act subjects a U.S. shareholder to current tax on GILTI earned by foreign subsidiaries. The FASB Staff Q&A Topic No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election either to recognize deferred taxes for temporary differences that are expected to reverse as GILTI in future years or provide for the tax expense related to GILTI resulting from those items in the year the tax is incurred. We have elected to recognize the resulting tax on GILTI as a period expense in the period the tax is incurred. We have estimated the effect in our estimated annual effective rate based on current tax guidance. The actual tax expense we record for GILTI may differ from this estimate. The provision for income taxes for the three months ended September 30, 2018 is based on our projected annual effective tax rate for fiscal year 2018, adjusted for specific items that are required to be recognized in the period in which they are incurred. The provision for income taxes was $5,594 for the three months ended September 30, 2018 as compared to a benefit from income taxes of $11,552 for the prior year period. When compared to the statutory rate of 21%, the effective tax rate of 18.1% for the three months ended September 30, 2018 was primarily due to a tax benefit of $5,075 as a result of changes in our valuation allowance relating to temporary items and tax carryforwards anticipated to be utilized, a tax benefit of $2,230 as a result of tax credits anticipated to be utilized, and a net tax benefit of $1,375 for excess tax benefits from employee stock compensation, partially offset by tax provision of $6,143 due to the geographic mix of earnings. To a lesser extent, our rate was also affected by the Act due to a net tax provision of $1,000. The provision for income taxes for the six months ended September 30, 2018 is based on our projected annual effective tax rate for fiscal year 2019, adjusted for specific items that are required to be recognized in the period in which they are incurred. The provision for income taxes was $11,348 for the six months ended September 30, 2018 as compared to a benefit from income taxes of $24,417 for the prior year period. When compared to the statutory rate of 21%, the effective tax rate of 10.5% for the six months ended September 30, 2018 was primarily due to a tax benefit of $10,575 as a result of changes in our valuation allowance relating to temporary items and tax carryforwards anticipated to be utilized, a tax benefit of $8,848 as a result of tax credits anticipated to be utilized, and a net tax benefit of $6,918 for excess tax benefits from employee stock compensation, partially offset by tax provision of $10,638 due to the geographic mix of earnings. To a lesser extent, our rate was also affected by the Act due to a net tax provision of $3,391. We anticipate that additional excess tax benefits from employee stock compensation, tax credits, changes in valuation allowance, and changes as a result of the Act may arise in future periods, which could have a significant impact on our effective tax rate. The accounting for share-based compensation will increase or decrease our effective tax rate based upon the difference between our share-based compensation expense and the deductions taken on our tax return, which depends upon the stock price at the time of the employee award vesting. Because we recognize excess tax benefits on a discrete basis, we anticipate that our effective tax rate will vary from quarter to quarter depending on our stock price in each period. On June 21, 2018, the U.S. Supreme Court issued its decision in South Dakota v. Wayfair, which overturned previous case law that precluded states from requiring retailers to collect and remit sales tax on sales made to in-state customers unless the retailer had physical presence in the state. Although this case is limited to sales tax collection obligations, we continue to monitor the potential impact of this decision on our state income tax footprint. The ultimate amount of tax payable in a given financial statement period may be materially affected by sudden or unforeseen changes in tax laws, changes in the mix and level of earnings by taxing jurisdictions, or changes to existing accounting rules or regulations. For example, on July 24, 2018, the Ninth Circuit Court of Appeals issued an opinion in Altera Corp. v. Commissioner requiring related parties in an intercompany cost-sharing arrangement to share expenses related to stock compensation. On August 7, 2018, the opinion was withdrawn to allow time for a reconstituted panel to confer. We are monitoring this case and any impact the final opinion could have on our financial statements. We are regularly examined by domestic and foreign taxing authorities. Examinations may result in tax assessments in excess of amounts claimed and the payment of additional taxes. We believe our tax positions comply with applicable tax law, and that we have adequately provided for reasonably foreseeable tax assessments. It is possible that settlement of audits or the expiration of the statute of limitations may have an impact on our effective tax rate in future periods.

INCOME TAXES

On December 22, 2017, the United States (“U.S.”) enacted comprehensive tax legislation commonly referred to as the "Tax Cuts and Jobs Act” (herein referred to as the "Act”). The Act makes broad and complex changes to the U.S. tax code, which could materially affect us. The Act reduced the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018 and requires companies to pay a one-time transition tax on the previously untaxed earnings of certain foreign subsidiaries. In addition, the Act makes other changes that may affect us. These changes include but are not limited to (1) a Base Erosion Anti-abuse Tax (BEAT), which is a new minimum tax, (2) generally eliminating U.S. federal income taxes on dividends from foreign subsidiaries, (3) a new provision that taxes global intangible low-taxed income (GILTI), (4) the repeal of the domestic production activity deduction, and (5) other base broadening provisions.

The SEC issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act ("SAB 118"), which provides guidance on accounting for the Act’s impact. SAB 118 provides a measurement period, which should not extend beyond one year from the Act enactment date, during which a company acting in good faith may complete the accounting for the impact of the Act under ASC 740. In accordance with SAB 118, the income tax effects of the Act must be reflected in the reporting period in which the accounting under ASC Topic 740 is complete. To the extent the accounting for certain income tax effects of the Act is incomplete, we can determine a reasonable estimate for those effects and record a provisional estimate.

We continue to evaluate the potential impact of the Act, and the amounts recorded in the fiscal year ended March 31, 2018 represented provisional estimates for certain identified income tax effects, for which the accounting is incomplete but a reasonable estimate was determined. Additional information and further analysis is required to determine the untaxed earnings of certain foreign subsidiaries and to evaluate the complexities of the new tax law along with additional interpretative guidance that may be issued. The impact of the Act may differ from these estimates, possibly materially, due to changes in interpretations and assumptions we have made, guidance that may be issued and actions we may take as a result of the Act. We expect to continue to analyze the Act and its impacts and record any adjustments to provisional estimates no later than the third quarter of the fiscal year ending March 31, 2019. We continue to review whether the Act will affect our existing intention to indefinitely reinvest earnings of our foreign subsidiaries and therefore have not recorded any tax liabilities associated with the repatriation of foreign earnings.

The Act subjects a U.S. shareholder to current tax on GILTI earned by foreign subsidiaries. The FASB Staff Q&A Topic No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election either to recognize deferred taxes for temporary differences that are expected to reverse as GILTI in future years or provide for the tax expense related to GILTI resulting from those items in the year the tax is incurred. We have elected to recognize the resulting tax on GILTI as a period expense in the period the tax is incurred. We have estimated the effect in our estimated annual effective rate based on current tax guidance. The actual tax expense we record for GILTI may differ from this estimate.

The provision for income taxes for the three months ended September 30, 2018 is based on our projected annual effective tax rate for fiscal year 2018, adjusted for specific items that are required to be recognized in the period in which they are incurred. The provision for income taxes was $5,594 for the three months ended September 30, 2018 as compared to a benefit from income taxes of $11,552 for the prior year period.

When compared to the statutory rate of 21%, the effective tax rate of 18.1% for the three months ended September 30, 2018 was primarily due to a tax benefit of $5,075 as a result of changes in our valuation allowance relating to temporary items and tax carryforwards anticipated to be utilized, a tax benefit of $2,230 as a result of tax credits anticipated to be utilized, and a net tax benefit of $1,375 for excess tax benefits from employee stock compensation, partially offset by tax provision of $6,143 due to the geographic mix of earnings. To a lesser extent, our rate was also affected by the Act due to a net tax provision of $1,000.

The provision for income taxes for the six months ended September 30, 2018 is based on our projected annual effective tax rate for fiscal year 2019, adjusted for specific items that are required to be recognized in the period in which they are incurred. The provision for income taxes was $11,348 for the six months ended September 30, 2018 as compared to a benefit from income taxes of $24,417 for the prior year period.

When compared to the statutory rate of 21%, the effective tax rate of 10.5% for the six months ended September 30, 2018 was primarily due to a tax benefit of $10,575 as a result of changes in our valuation allowance relating to temporary items and tax carryforwards anticipated to be utilized, a tax benefit of $8,848 as a result of tax credits anticipated to be utilized, and a net tax benefit of $6,918 for excess tax benefits from employee stock compensation, partially offset by tax provision of $10,638 due to the geographic mix of earnings. To a lesser extent, our rate was also affected by the Act due to a net tax provision of $3,391.

We anticipate that additional excess tax benefits from employee stock compensation, tax credits, changes in valuation allowance, and changes as a result of the Act may arise in future periods, which could have a significant impact on our effective tax rate.

The accounting for share-based compensation will increase or decrease our effective tax rate based upon the difference between our share-based compensation expense and the deductions taken on our tax return, which depends upon the stock price at the time of the employee award vesting. Because we recognize excess tax benefits on a discrete basis, we anticipate that our effective tax rate will vary from quarter to quarter depending on our stock price in each period.

On June 21, 2018, the U.S. Supreme Court issued its decision in South Dakota v. Wayfair, which overturned previous case law that precluded states from requiring retailers to collect and remit sales tax on sales made to in-state customers unless the retailer had physical presence in the state. Although this case is limited to sales tax collection obligations, we continue to monitor the potential impact of this decision on our state income tax footprint.

The ultimate amount of tax payable in a given financial statement period may be materially affected by sudden or unforeseen changes in tax laws, changes in the mix and level of earnings by taxing jurisdictions, or changes to existing accounting rules or regulations. For example, on July 24, 2018, the Ninth Circuit Court of Appeals issued an opinion in Altera Corp. v. Commissioner requiring related parties in an intercompany cost-sharing arrangement to share expenses related to stock compensation. On August 7, 2018, the opinion was withdrawn to allow time for a reconstituted panel to confer. We are monitoring this case and any impact the final opinion could have on our financial statements.

We are regularly examined by domestic and foreign taxing authorities. Examinations may result in tax assessments in excess of amounts claimed and the payment of additional taxes. We believe our tax positions comply with applicable tax law, and that we have adequately provided for reasonably foreseeable tax assessments. It is possible that settlement of audits or the expiration of the statute of limitations may have an impact on our effective tax rate in future periods.