Segment Information - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 1,183,690	$ 995,619	$ 839,247
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	631,003	534,524	437,560
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 552,687	$ 461,095	$ 401,687

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details