Note 8 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Deferred tax assets:
Accrued expenses and other	$ 4,930	$ 3,705
Inventory and amortizable assets	565	265
Total deferred tax assets	5,495	3,970
Deferred tax liabilities:
Property	18,872	18,505
Intangibles and other	1,446	1,452
Total deferred tax liabilities	20,318	19,957
Net deferred tax liabilities	$ 14,823	$ 15,987