Note 8 - Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Inventory	$ 840	$ 976
Net operating loss carryforwards	1,289	1,421
Tax credit carryforwards	944	828
Capital loss carryforwards	277	279
Reserves and accruals	787	802
Operating lease liabilities	3,343
Intangible assets	2,764	2,737
Stock options	342	373
Other	20	91
Total deferred tax assets	10,606	7,507
Deferred tax liabilities:
Property and equipment	(1,520)	(1,416)
Goodwill	(3,459)	(3,023)
Operating lease right-of-use assets	(3,224)
Foreign branch deferred offset	(923)	(1,032)
Other	(187)	(50)
Total deferred tax liabilities	(9,313)	(5,521)
Net deferred tax assets before valuation allowance	1,293	1,986
Valuation allowance	(1,388)	(1,255)
Net deferred tax liability	(95)
Net deferred tax asset		731
Deferred tax classification
Deferred tax assets	1,084	1,215
Long-term deferred tax liability	(1,179)	(484)
Net long-term deferred tax liability	$ (95)
Net long-term deferred tax asset		$ 731