Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 27,799	$ 19,648	$ 46,301	$ (20,225)
Effective income tax rate	28.70%	30.50%	21.30%	(12.30%)
Excess tax benefits from stock-based awards	$ 500	$ 1,700	$ 13,800	$ 68,500