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Accumulated Other Comprehensive Income (Loss) (Tables)
12 Months Ended
Apr. 30, 2024
Equity [Abstract]  
Schedule of Before Tax Income (Loss) Related Income Tax Effect and Accumulated Balances The before tax income (loss), related income tax effect, and accumulated balances are as follows:
$ in thousandsForeign
Currency
Translation
Adjustment
Minimum
Pension
Liability
Adjustment
Total
Accumulated
Other
Comprehensive
Income (Loss)
Balance at April 30, 2022$(2,543)$(1,199)$(3,742)
Foreign currency translation adjustment(290)— (290)
Change in unrecognized actuarial loss on pension obligations— 590 590 
Balance at April 30, 2023(2,833)(609)(3,442)
Foreign currency translation adjustment(549)(49)(598)
Change in unrecognized actuarial loss on pension obligations 509 509 
Settlement loss included in net income
 4,019 4,019 
Income taxes on postretirement benefit plans
 (3,870)(3,870)
Balance at April 30, 2024$(3,382)$ $(3,382)