Investments - Schedule of Equity Securities without Readily Determinable Fair Value (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |||
| Carrying amount, beginning of the year | $ 198,142 | $ 175,522 | $ 168,732 |
| Purchases | 8,000 | 13,853 | 6,311 |
| Sales / return of capital | 0 | 0 | (176) |
| Net change in unrealized gain (loss) | 413 | 8,767 | 1,177 |
| Net realized loss | 0 | 0 | (522) |
| Carrying amount, end of year | $ 206,555 | $ 198,142 | $ 175,522 |