Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Mar. 31, 2016
Income Tax Contingency [Line Items]
Tax adjustment, related to federal research and development tax credits recorded as a result of the Protecting Americans from Tax Hikes (PATH) Act of 2015 enacted on December 18, 2015, for the first two quarters of fiscal year 2016 and recorded in the third quarter of fiscal year 2016	$ 4.3
Tax adjustment, related to federal research and development tax credits recorded as a result of the Protecting Americans from Tax Hikes (PATH) Act of 2015 enacted on December 18, 2015, for the fourth quarters of fiscal year 2015 and recorded in the third quarter of fiscal year 2016	2.1
Increase (decrease) in gross unrecognized tax benefits	$ 1.2	$ 1.9
Scenario Forecast [Member]
Income Tax Contingency [Line Items]
Effective income tax rate			10.30%