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CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 17,233	$ 148,309	$ 148,256
Other comprehensive income (loss):
Foreign currency translation adjustment	3,220	(71,625)	82,762
Unamortized retirement costs, net of tax benefit (expense) of $5,967, $(13,440), and $(2,103), respectively	(24,580)	45,920	(226)
Unrealized gain on interest rate swaps, net of tax (expense) of $(393), $(2,787), and $(657), respectively	604	8,349	2,171
Total other comprehensive (loss) income	(20,756)	(17,356)	84,707
Comprehensive (loss) income	$ (3,523)	$ 130,953	$ 232,963

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