Income Taxes - Summary of Benefit from Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Current tax provision
Federal	$ (5,935)	$ (821)	$ (284)
State	(1,465)	(690)	(401)
Foreign	(327)	(1,619)	(953)
Total current tax provision	(7,727)	(3,130)	(1,638)
Deferred tax benefit
Federal	9,889	34,099	24,833
State	5,797	8,738	10,450
Foreign	(44)	1,307	1,572
Total deferred tax benefit (provision)	15,642	44,144	36,855
Total benefit from income taxes	$ 7,915	$ 41,014	$ 35,217