Investments and Fair Value Measurements- Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Interest income from cash, cash equivalents, and marketable securities	$ 48,600	$ 49,300	$ 38,700
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Securities held and classified as restricted trading securities	$ 2,165	$ 714

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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