Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Effective Income Tax Rate Reconciliation, Percent, Total	9.00%	1.00%
Deferred Tax Assets, Valuation Allowance	$ 3,681	$ 4,651
State and Local Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance		$ 4,700
Domestic Tax Authority [Member] | Pre-2018 [Member]
Operating Loss Carryforwards	40,300
Domestic Tax Authority [Member] | Post 2017 [Member]
Operating Loss Carryforwards	$ 60,700