Note 8 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2022	May 01, 2021
Deferred tax assets:
Accrued expenses and other	$ 3,306	$ 3,347
Inventory and amortizable assets	325	544
Total deferred tax assets	3,631	3,891
Deferred tax liabilities:
Property	23,863	18,814
Intangibles and other	3,591	2,371
Total deferred tax liabilities	27,454	21,185
Net deferred tax liabilities	$ 23,823	$ 17,294