The Company and a Summary of Its Significant Accounting Policies - Additional Information (Detail 5) $ in Thousands	12 Months Ended
	Mar. 31, 2024 USD ($) Segment	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Company And Summary Of Significant Accounting Policies [Line Items]
Foreign currency translation adjustments, net of tax	$ 2,982	$ (13,092)	$ (31,424)
Other comprehensive income (loss) related to effects of foreign currency translation adjustments before tax			$ 37,300
Remaining performance obligations	$ 3,700,000
Number of reportable segments | Segment	3
Unfavorable Regulatory Action [Member]
Company And Summary Of Significant Accounting Policies [Line Items]
U.S. government contract-related reserves	$ 16,600	$ 12,900
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-04-01
Company And Summary Of Significant Accounting Policies [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, explanation	Company expects to recognize a little less than half over the next 12 months, with the balance recognized thereafter