Note 12 - Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
United States federal tax at statutory rate, amount	$ (15,801)	$ (13,070)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
State taxes (net of deferred benefit), amount	$ (2,912)	$ (2,205)
State taxes (net of deferred benefit), percent	3.90%	3.50%
Nondeductible expenses, amount	$ 1,077	$ (440)
Nondeductible expenses, percent	(1.40%)	0.70%
Change in fair market value of contingent consideration, amount	$ (283)	$ (397)
Change in fair market value of contingent consideration, percent	0.40%	0.60%
Warrant remeasurment and financing costs, amount	$ 0	$ 502
Warrant remeasurment and financing costs, percent	0.00%	(0.80%)
Research & Development, amount	$ (970)	$ (705)
Research & Development, percent	1.30%	1.10%
Change in unrecognized tax benefits, amount	$ 194	$ 141
Change in unrecognized tax benefits, percent	(0.30%)	(0.20%)
Foreign tax rate differential, amount	$ 2,676	$ 1,911
Foreign tax rate differential, percent	(3.60%)	(3.10%)
True-up to Stock Compensation - Cancellations, amount	$ 49	$ 2,832
True-up to Stock Compensation - Cancellations, percent	(0.10%)	(4.60%)
Change in enacted tax rates and other, net, amount	$ (96)	$ 731
Change in enacted tax rates and other, net, percent	0.20%	(1.00%)
Change in valuation allowance, amount	$ 16,384	$ 10,925
Change in valuation allowance, percent	(21.80%)	(17.60%)
Total income tax expense	$ 318	$ 225
Income tax expense (benefit), percent	(0.40%)	(0.40%)