Revenue Recognition - Deferred Revenue - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Deferred revenue	$ 21,291		$ 21,291		$ 19,147
Deferred Revenue, Revenue Recognized	$ 3,000	$ 2,300	$ 17,600	$ 15,000