Note 10 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2023	Jun. 30, 2023	Jun. 30, 2022
Effective Income Tax Rate Reconciliation, Percent	0.10%	(0.40%)		(0.20%)	(0.40%)
Income Tax Expense (Benefit)	$ (12,000)	$ 85,000		$ 79,000	$ 169,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 0			$ 0
Forecast [Member]
Effective Income Tax Rate Reconciliation, Percent			(0.30%)