Note 5 - Income Taxes - Income Taxes Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Provision for income taxes at federal statutory rate	$ 1,030	$ 863
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
State income taxes, net of federal benefit	$ (125)	$ 68
State income taxes, net of federal benefit, rate	(2.50%)	1.60%
Permanent differences	$ (19)	$ 74
Permanent differences, rate	(0.40%)	1.80%
Goodwill impairment	$ 517	$ 0
Goodwill impairment, rate	10.50%	0.00%
Return to provision adjustment	$ (223)	$ 0
Return to provision adjustment, rate	(4.50%)	0.00%
Foreign tax rate differential	$ 1,016	$ 731
Foreign tax rate differential, rate	20.70%	17.80%
GILTI tax	$ 323	$ 401
GILTI tax, rate	6.60%	9.70%
Change in valuation allowance	$ 308	$ 0
Change in Valuation Allowance, rate	6.30%	0.00%
Other	$ (50)	$ (29)
Other, rate	(1.10%)	(0.60%)
Net expense	$ 2,777	$ 2,108
Net expense, rate	56.60%	51.30%