Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Operating Loss Carryforwards [Line Items]
Benefit from income taxes	$ 11,798	$ 34,496	$ 4,699	$ 128,106
Effective income tax rate	7.00%	22.00%	2.00%	12.00%
Increase (decrease) in gross unrecognized tax benefits	$ (8,300)
Valuation allowance	371,500		$ 371,500		$ 353,600
Increase (decrease) in unrecognized tax benefits income tax penalties and interest expense	(4,200)		(3,700)
Impact on effective tax rate	12,400		12,400
Unrecognized tax benefits	$ 185,900		$ 185,900