Note 14 - Income Taxes (Details Textual) - USD ($) Pure in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Effective Income Tax Rate Reconciliation, Percent, Total	0.00%	0.00%
Deferred Tax Assets, Valuation Allowance	$ 98,143		$ 95,256
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,886
Effective Income Tax Rate Reconciliation, Excess Tax Deficiencies, Amount	1,730	$ 544
Valuation Allowance to Offset Excess Tax Deficiencies [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 1,730	$ 544