Note 12 - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Inventory (excluding LIFO reserve)	$ 2,986	$ 2,881
Net operating loss and tax credit carryforwards	2,926	2,971
Allowance for doubtful accounts	500	519
Accrued expenses	7,311	7,642
Other	143	83
	13,866	14,096
Valuation reserve	(1,030)	(1,381)
Total deferred tax assets	12,836	12,715
Deferred tax liabilities:
LIFO reserve	(6,018)	(6,049)
Property and equipment	(20,601)	(22,684)
Intangibles	(11,329)	(14,930)
Other	(1)	24
Total deferred tax liabilities	(37,949)	(43,639)
Deferred tax liabilities, net	$ (25,113)	$ (30,924)