Note 8 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Allowance for uncollectable accounts	$ 81	$ 80
Inventories reserve	263	303
Accrued vacation	127	135
Accrued bonus	462	274
Stock-based compensation and equity appreciation rights	159	135
Other Accruals	548	547
Lease Accounting ASC 842 Lease Liability	1,351	1,555
Capitalized Research Expenses	318	0
Net operating loss carryforwards	0	101
Tax credit carryforwards	156	162
Unrealized Foreign Currency Gain	20	22
Intangibles	515	569
COGS Rev Rec Adjustment	1,864	1,776
COGS Offset Adjustment	(1,875)	(1,807)
Other	235	10
Total	4,224	3,862
Valuation allowance	(2,563)	(1,976)
Deferred tax assets	1,661	1,886
Accumulated Other Comprehensive Income	(56)	(297)
Lease Accounting ASC 842 Lease Asset	(1,301)	(1,518)
Prepaid Expenses	(143)	0
Property and equipment	(161)	(71)
Deferred tax liabilities	(1,661)	(1,886)
Net deferred tax assets	$ 0	$ 0