Note 5 - Income Taxes - Income Taxes Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Provision for income taxes at federal statutory rate	$ 1,498	$ 1,030
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
State income taxes, net of federal benefit	$ 123	$ (125)
State income taxes, net of federal benefit, rate	1.70%	(2.50%)
Permanent differences	$ 282	$ (19)
Permanent differences, rate	4.00%	(0.40%)
Goodwill adjustment		$ 517
Goodwill adjustment, rate		10.50%
Section 162(m) adjustment, amount	$ 55	$ 0
Section 162(m) adjustment, rate	0.80%	0.00%
Return to provision adjustment	$ (339)	$ (223)
Return to provision adjustment, rate	(4.80%)	(4.50%)
Foreign tax rate differential	$ 877	$ 1,016
Foreign tax rate differential, rate	12.30%	20.70%
GILTI tax	$ 0	$ 323
GILTI tax, rate		6.60%
Sale of membership interest	$ 149	$ 0
Sale of membership interest, rate	2.10%	0.00%
Change in valuation allowance	$ (268)	$ 308
Change in Valuation Allowance, rate	(3.80%)	6.30%
Other	$ (20)	$ (50)
Other, rate	(0.30%)	(1.10%)
Net expense	$ 2,357	$ 2,777
Net expense, rate	33.00%	56.60%