Note 9 - Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Inventory	$ 1,629	$ 840
Net operating loss carryforwards	1,348	1,289
Tax credit carryforwards	1,019	944
Capital loss carryforwards	521	277
Reserves and accruals	994	787
Operating lease liabilities	3,664	3,343
Intangible assets	4,386	2,764
Stock options	359	342
Other	105	20
Total deferred tax assets	14,025	10,606
Deferred tax liabilities:
Property and equipment	(1,831)	(1,520)
Goodwill	(4,055)	(3,459)
Operating lease right-of-use assets	(3,503)	(3,224)
Foreign branch deferred offset	(954)	(923)
Other	(299)	(187)
Total deferred tax liabilities	(10,642)	(9,313)
Net deferred tax assets before valuation allowance	3,383	1,293
Valuation allowance	(1,824)	(1,388)
Net deferred tax asset	1,559	95
Net deferred tax liabiltity	(1,559)	(95)
Deferred tax classification
Deferred tax assets	1,686	1,084
Long-term deferred tax liability	(127)	(1,179)
Net long-term deferred tax liability	1,559	95
Net long-term deferred tax asset	$ (1,559)	$ (95)