Note 12 - Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
United States federal tax at statutory rate, amount	$ (16,405)	$ (15,801)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
State taxes (net of deferred benefit), amount	$ (2,493)	$ (2,912)
State taxes (net of deferred benefit), percent	3.20%	3.90%
Nondeductible expenses, amount	$ 755	$ 1,077
Nondeductible expenses, percent	(1.00%)	(1.40%)
Change in fair market value of contingent consideration, amount	$ 244	$ (283)
Change in fair market value of contingent consideration, percent	(0.30%)	0.40%
Warrant remeasurment and financing costs, amount	$ (140)	$ 0
Warrant remeasurment and financing costs, percent	0.20%	0.00%
Research & Development, amount	$ (1,898)	$ (970)
Research & Development, percent	2.40%	1.30%
Change in unrecognized tax benefits, amount	$ 380	$ 194
Change in unrecognized tax benefits, percent	(0.50%)	(0.30%)
Foreign tax rate differential, amount	$ 3,176	$ 2,676
Foreign tax rate differential, percent	(4.10%)	(3.60%)
True-up to Stock Compensation - Cancellations, amount	$ 0	$ 49
True-up to Stock Compensation - Cancellations, percent	0.00%	(0.10%)
Change in enacted tax rates and other, net, amount	$ 659	$ (96)
Change in enacted tax rates and other, net, percent	(0.80%)	0.00%
Change in valuation allowance, amount	$ 16,036	$ 16,384
Change in valuation allowance, percent	(20.50%)	(21.80%)
Total income tax expense	$ 314	$ 318
Income tax expense (benefit), percent	(0.40%)	(0.40%)