Pension - Projected benefit obligation and fair value of plan assets (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
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Apr. 30, 2026
USD ($)
employee
|
Apr. 30, 2025
USD ($)
|
Apr. 30, 2024
USD ($)
|
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| Pension | |||
| Number of former employees | employee | 3 | ||
| Pension Plan | |||
| Pension | |||
| Defined Benefit Plan, Funding Status [Extensible List] | us-gaap:UnfundedPlanMember | ||
| Projected benefit obligation | $ (3,249) | $ (3,335) | $ (3,246) |
| Fair value of plan assets | 3,862 | $ 3,817 | $ 3,636 |
| Funded status of the plan | $ 613 |
| X | ||||||||||
- Definition Number of former employees. No definition available.
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates status of funding for defined benefit plan designed to provide retirement benefits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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