Income Taxes - Components of (Loss) Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Domestic	$ (238,068)	$ (193,262)	$ (93,687)
Foreign	6,286	2,931	2,919
Loss before income taxes	$ (231,782)	$ (190,331)	$ (90,768)