Note 10 - Income Taxes - Reconciliation of Amounts of US Federal Statutory Income Tax Rate to Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S. federal statutory tax rate	$ (5,124)	$ (3,909)	$ (7,067)
State and local income taxes, net	(2,419)	(2,077)	(292)
Stock-based compensation	(4,313)	3,117	(51)
Executive compensation limitation	1,812	449	3,566
Fair value of earn-out liability	7,828	2,165	(828)
GILTI inclusion, net	3,903	1,940	0
Foreign-derived intangible income deduction	0	(1,534)	0
Transaction costs	0	0	125
Change in valuation allowance	3,866	1,794	12,844
Deferred rate change	(119)	2,076	0
Foreign rate differential	(2,736)	(1,107)	(2,066)
Return-to-provision adjustments	2,095	274	(1,029)
Permanent differences	91	(343)	29
Other, net	(141)	42	(193)
Total	$ 4,743	$ 2,887	$ 5,038