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Derivative Instruments and Hedging Activities - Statements of Other Comprehensive Loss Income (Details) - Interest Rate Swap - USD ($)
$ in Thousands
3 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Derivative [Line Items]    
Amount of pretax (losses) gains recognized in Other comprehensive income (loss) $ (6,360) $ 6,291
Interest Expense    
Derivative [Line Items]    
Amount of pretax gains reclassified from Accumulated other comprehensive loss into Interest expense $ 1,715 $ 2,885