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v3.23.2

Pension - Projected benefit obligation and fair value of plan assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Pension |  |  |
Defined Benefit Plan, Funding Status [Extensible List] | us-gaap:UnderfundedPlanMember | us-gaap:UnderfundedPlanMember |
Pension Plan |  |  |
Pension |  |  |
Projected benefit obligation | $ (3,192) | $ (3,322) | $ (4,126)
Fair value of plan assets | 3,870 | 3,395 | $ 3,951
Funded status of the plan | $ 678 | $ 73 |

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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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