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Schedule of Reconciliation of Obligations and Fair Values of Plan Assets (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Compensation And Retirement Disclosure [Abstract] |  |  |
Benefit Obligation at April 1, | $ 36,701 | $ 33,730 |
Service Cost - Benefits Earned During the Period |  | 339 | $ 399
Interest Cost on Projected Benefit Obligation | 1,216 | 1,351 | 1,347
Actuarial (Gain) Loss | 1,714 | 2,464 |
Benefits Paid | (1,251) | (1,183) |
Sale of Business | (2,536) |  |
Benefit Obligation at March 31, | 35,844 | 36,701 | 33,730
Fair Value of Plan Assets at April 1, | 39,009 | 36,541 |
Actual Return on Plan Assets | 2,939 | 3,651 |
Benefits Paid | (1,251) | (1,183) |
Sale of Business | (2,790) |  |
Fair Value of Plan Assets at March 31, | 37,907 | 39,009 | $ 36,541
Funded Status at March 31, | 2,063 | 2,308 |
Other Assets | 2,063 | 2,308 |
Accumulated Other Comprehensive Losses - Net Actuarial Loss | 4,524 | 4,709 |
Accumulated Other Comprehensive Losses | 4,524 | 4,709 |
Tax impact | (1,086) | (1,128) |
Accumulated Other Comprehensive Losses, net of tax | $ 3,438 | $ 3,581 |

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