Note 8 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Allowance for uncollectable accounts	$ 80	$ 85
Inventories reserve	303	531
Accrued vacation	135	115
Accrued bonus	274	57
Stock-based compensation and equity appreciation rights	135	78
Other Accruals	547	0
Lease Accounting ASC 842 Lease Liability	1,555	1,405
Section 481(a) adjustment	0	798
Net operating loss carryforwards	101	82
Tax credit carryforwards	162	165
Unrealized Foreign Currency Gain	22	42
Intangibles	569	0
COGS Rev Rec Adjustment	1,776	0
COGS Offset Adjustment	1,807	0
Other	10	5
Total	3,862	3,363
Valuation allowance	(1,976)	(1,504)
Deferred tax assets	1,886	1,859
Accumulated Other Comprehensive Income	(297)	(61)
Lease Accounting ASC 842 Lease Asset	(1,518)	(1,386)
Property and equipment	(71)	(412)
Deferred tax liabilities	(1,886)	(1,859)
Net deferred tax assets	$ 0	$ 0