Income Taxes (Schedule Of Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021
Deferred tax assets:
Accounts receivable	$ 1,941	$ 1,781
Deferred Tax Assets, Pension Benefits	0	815
Product liability	1,739	1,321
Employee benefits	5,604	5,746
Operating leases liabilities	29,255	32,975
Other	1,862	2,086
Gross deferred tax assets, before valuation allowance	45,943	50,157
Valuation allowance	(5,122)	(4,914)
Gross deferred tax assets, after valuation allowance	40,821	45,243
Deferred tax liabilities:
Pension benefits	194	0
Inventory	1,095	3,851
Depreciation	27,178	22,116
Intangibles	18,085	29,123
Operating leases right-of-use assets	26,980	31,320
Interest rate swaps	3,457	0
Other	703	606
Gross deferred tax liabilities	77,692	87,016
Net deferred tax liability	36,871	41,773
State [Member]
Deferred tax assets:
Tax credit carryforwards	$ 5,542	$ 5,433