Collaborations - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Oct. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2023
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Revenue		$ 299,489	$ 271,893	$ 243,920
Deferred Revenue Current		62,521	62,939
Prepaid expenses and other current assets		19,224	25,139
Cost of Revenue		164,993	138,948	126,914
Accounts Payable and Other Accrued Liabilities, Current		66,430	44,588
G S K
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Revenue		47,400	46,100	39,900
Aggregate Cash Consideration For Collaboration Arrangement	$ 50,000
Deferred Revenue Current			9,200		$ 11,800
Research and development expense		10,700	24,000	18,700
Cost of Revenue		500	300	$ 1,400
Accounts Payable and Other Accrued Liabilities, Current		$ 11,900	$ 18,300
Voting interest percentage		20.10%	16.30%