INCOME TAXES:	6 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
INCOME TAXES:	INCOME TAX: In determining the quarterly provision for income taxes, the Company makes its best estimate of the effective income tax rate expected to be applicable for the full fiscal year. The estimated effective income tax rate for the current fiscal year is impacted by nondeductible stock-based compensation, state income taxes, research tax credits, and losses in foreign jurisdictions. State income taxes are influenced by the geographic and legal entity mix of the Company’s U.S. income as well as the diversity of rules among the states. The Company does not record a tax benefit for certain foreign losses due to uncertainty of future utilization. As a result of adopting ASU 2016–09 during the first quarter of the current fiscal year, all excess tax benefits and deficiencies from stock–based compensation are recognized as income tax benefit and expense in the Company’s Condensed Consolidated Statement of Operations in the reporting period in which they occur. For the three months and six months ended September 30, 2017, the Company recognized discrete income tax benefits of $0.5 million and $2.0 million, respectively, related to net excess tax benefits.

INCOME TAXES:

6 Months Ended

Sep. 30, 2017

INCOME TAX:

In determining the quarterly provision for income taxes, the Company makes its best estimate of the effective income tax rate expected to be applicable for the full fiscal year. The estimated effective income tax rate for the current fiscal year is impacted by nondeductible stock-based compensation, state income taxes, research tax credits, and losses in foreign jurisdictions. State income taxes are influenced by the geographic and legal entity mix of the Company’s U.S. income as well as the diversity of rules among the states. The Company does not record a tax benefit for certain foreign losses due to uncertainty of future utilization.

As a result of adopting ASU 2016–09 during the first quarter of the current fiscal year, all excess tax benefits and deficiencies from stock–based compensation are recognized as income tax benefit and expense in the Company’s Condensed Consolidated Statement of Operations in the reporting period in which they occur. For the three months and six months ended September 30, 2017, the Company recognized discrete income tax benefits of $0.5 million and $2.0 million, respectively, related to net excess tax benefits.