Note 13 - Income Taxes (Details Textual) - USD ($) Pure in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022
Income Tax Expense (Benefit), Total			$ 0
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0
Effective Income Tax Rate Reconciliation, Percent, Total	0.00%	0.00%	0.00%	0.00%
Forecast [Member]
Effective Income Tax Rate Reconciliation, Percent, Total					0.00%