Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Operating Loss Carryforwards [Line Items]
(Provision for) benefit from income taxes	$ (5,915)	$ 93,077	$ (7,099)	$ 93,610
Effective income tax rate	(5.00%)	11.00%	(5.00%)	10.00%
Increase in gross unrecognized tax benefits	$ 7,800		$ 8,600
Valuation allowance	369,400		369,400		$ 353,600
Increase in unrecognized tax benefits income tax penalties and interest expense	1,600		1,600
Impact on effective tax rate	15,800		15,800
Unrecognized tax benefits	$ 194,200		$ 194,200