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Income Taxes - Schedule of Income Taxes Paid, Net of Refunds Received (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Income Tax Examination [Line Items]
Switzerland - Federal	$ 19,028
Switzerland - Cantonal:	21,967
Foreign:
Total Foreign	45,358
Total	86,353	$ 67,484	$ 50,855
Vaud
Income Tax Examination [Line Items]
Switzerland - Cantonal:	21,851
Zurich
Income Tax Examination [Line Items]
Switzerland - Cantonal:	116
United States
Foreign:
Total Foreign	6,502
China
Foreign:
Total Foreign	9,466
Japan
Foreign:
Total Foreign	5,283
Brazil
Foreign:
Total Foreign	5,059
Sweden
Foreign:
Total Foreign	4,551
Other
Foreign:
Total Foreign	$ 14,497