Note 14 - Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Inventory (excluding LIFO reserve)	$ 1,353	$ 1,622
Net operating loss and tax credit carryforwards	3,198	2,498
Allowance for doubtful accounts	513	504
Accrued expenses	5,486	6,087
Lease liabilities	6,718
Interest rate hedge	760
Other	237	232
Deferred tax assets before valuation allowance	18,265	10,943
Valuation allowance	(2,215)	(2,055)
Total deferred tax assets	16,050	8,888
Deferred tax liabilities:
LIFO reserve	(3,646)	(3,870)
Property and equipment	(13,250)	(13,625)
Lease right of use assets	(6,718)
Intangibles	(4,698)	(4,858)
Total deferred tax liabilities	(28,312)	(22,353)
Deferred tax liabilities, net	$ (12,262)	$ (13,465)