Leases - Schedule of Supplemental Cash Flow Information Related to Operating Leases (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Leases [Abstract] | ||
| Cash paid for amounts included in the measurement of operating lease liabilities | $ 8,457,000 | $ 9,151,000 |
| Operating lease liabilities arising from obtaining ROU assets | 41,582,000 | 46,954,000 |
| Finance lease liabilities arising from obtaining ROU assets | 0 | 358,000 |
| Additions to ROU assets resulting from additions to operating lease liabilities | $ 3,300,000 | $ 4,555,000 |