The Company and a Summary of Its Significant Accounting Policies - Additional Information (Detail 5) $ in Thousands	12 Months Ended
	Mar. 31, 2026 USD ($) Segment	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Company And Summary Of Significant Accounting Policies [Line Items]
Foreign currency translation adjustments, net of tax	$ 22,278	$ (9,275)	$ 2,982
Remaining performance obligations	$ 4,100,000
Number of reportable segments | Segment	2
Unfavorable Regulatory Action [Member]
Company And Summary Of Significant Accounting Policies [Line Items]
U.S. government contract-related reserves	$ 15,100	$ 14,800
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