Employee Benefit Plans - Components of Postretirement Benefit Cost (Income) and Pension Cost (Benefit) (Detail) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
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Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
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| Defined Benefit Plan Disclosure [Line Items] | |||
| Service cost during the period | $ 252 | $ 252 | $ 333 |
| Interest cost on projected benefit obligation | 1,292 | 1,312 | 1,185 |
| Expected return on assets | (1,778) | (1,851) | (2,169) |
| Actuarial loss | 781 | 843 | 633 |
| Net pension (benefit) cost and postretirement benefit expense | $ 547 | $ 556 | $ (18) |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- 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. No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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