Note 13 - Income Taxes (Details Textual) - USD ($) Pure in Thousands, $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2022
Income Tax Expense (Benefit), Total		$ 0
Unrecognized Tax Benefits, Ending Balance		$ 0
Effective Income Tax Rate Reconciliation, Percent, Total	0.00%	0.00%
Forecast [Member]
Effective Income Tax Rate Reconciliation, Percent, Total			0.00%