Note 7 - Income Taxes - Effective Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Federal statutory income tax rate, percent		21.00%
Equity compensation, percent		0.50%
Global intangible low-taxed income, percent		0.70%
State and local income taxes, net of federal income tax effect, percent		1.10%
R&D, percent		(3.60%)
Tax rate changes, percent		(0.10%)
Foreign exchange loss, percent		0.80%
Tax rate differential, percent		2.30%
Transaction costs, percent		0.70%
Other reconciling items (Rate)		0.50%
Effective income tax rate	29.10%	22.80%
Total income tax (benefit) provision	$ (2,447)	$ 1,892
State Administration of Taxation, China [Member]
R&D deduction, percent	1.20%	(1.10%)
Other reconciling items (Rate)	0.10%
Other reconciling items	$ (8)
R&D deduction	$ (103)
Inland Revenue, Hong Kong [Member]
Tax rate differential, percent	(1.50%)
Tax rate differential	$ 131
Canada Revenue Agency [Member]
State and local income taxes, net of federal income tax effect	$ (303)
State and local income taxes, net of federal income tax effect, percent	3.60%
Tax rate differential, percent	(2.00%)
Other reconciling items (Rate)	(0.20%)
Other reconciling items	$ 20
Tax rate differential	164
Change in functional currency	$ 170
Change in functional currency, percent	(2.00%)
Other Foreign Income Tax Authority [Member]
Tax rate differential, percent	(0.10%)
Tax rate differential	$ 9
Domestic Tax Jurisdiction [Member]
Federal statutory income tax rate	$ (1,763)
Federal statutory income tax rate, percent	21.00%
Equity compensation, percent	(1.60%)
State and local income taxes, net of federal income tax effect	$ (204)
State and local income taxes, net of federal income tax effect, percent	2.40%
R&D, percent	3.20%
Equity compensation	$ 136
Nontaxable refund credit	$ (296)
Nontaxable refund credit, percent	3.50%
Other nontaxable or nondeductible items	$ 14
Other nontaxable or nondeductible items, percent	(0.20%)
Other reconciling items (Rate)	1.50%
Other reconciling items	$ (127)
R&D	(267)
Cross-border tax laws:	$ (20)
Cross-border tax laws: (Rate)	0.20%