Income Taxes (Schedule Of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
CURRENT
Federal	$ 8,748	$ 25,683	$ 29,072
State	3,295	5,639	7,581
Foreign	417	1,018	533
Total current expense	12,460	32,340	37,186
DEFERRED
Federal	(21,316)	(10,741)	(7,508)
State	(4,049)	(1,896)	(4,261)
Foreign	(352)	(203)	(142)
Total deferred benefit	(25,717)	(12,840)	(11,911)
Total expense (benefit)	(13,257)	19,500	25,275
Other comprehensive income (loss)	21,944	(1,156)	(573)
Total comprehensive income tax expense	$ 8,687	$ 18,344	$ 24,702