Note 13 - Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income tax benefit at statutory rates	$ (2,501)	$ (15,839)
Warrant liabilities	(177)	(482)
Stock compensation	883	1,949
Other permanent differences	0	3
Foreign rate differential	(1)	(95)
State income taxes, net of federal tax benefit	(311)	(2,052)
Other	404	(431)
Prior year true-up adjustments	(757)	2,827
Valuation allowance	2,413	13,253
Total income tax benefit	$ (47)	$ (867)