Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Change In Pension Benefits And Derivative Hedging Activities [Line Items]
Other comprehensive income, deferred tax		$ 125		$ 251
Cash Flow Hedging
Change In Pension Benefits And Derivative Hedging Activities [Line Items]
Other comprehensive income, deferred tax	$ 1,783	$ 641	$ 1,350	$ 641