Note 11 - Income Taxes - Effective Tax Rate Analysis and Reconciliation of Expected Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Expected income tax expense at U.S. statutory rate									$ 726	$ 2,320
Subpart F income from foreign subsidiaries									145	184
NOL carryforwards utilized									(136)	39
Restricted stock compensation									201	(329)
Global intangible low taxed income									0	87
Nondeductible expenses									17	21
Current year tax credits (foreign and research)									(364)	(367)
Domestic tax benefit, net of Federal benefit									321	(167)
Changes in valuation allowance									16	18
Foreign income tax rate differences									96	109
Section 250 foreign derived intangible income deduction									(537)	(272)
Acquisition costs									71	0
Other									7	63
Income tax expense	$ 298	$ 74	$ 66	$ 125	$ 111	$ 446	$ 572	$ 577	$ 563	$ 1,706