Fair Value Measurements - Reconciliation of Level 3 Investments, Asset (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||
| Beginning balance | $ 1,687 | $ 1,964 |
| Gains (losses) recognized in accumulated other comprehensive income (loss) | $ 52 | $ (277) |
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Unrealized gain (loss) on investments in available-for-sale debt securities | Unrealized gain (loss) on investments in available-for-sale debt securities |
| Ending balance | $ 1,739 | $ 1,687 |