Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent, Total	(34.90%)	15.40%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (1,494)	$ 8
Deferred Tax Assets, Valuation Allowance	(0)	1,494
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	1,500
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards	0	1,100
Foreign Tax Authority [Member]
Tax Credit Carryforward, Amount	$ 500
Paycheck Protection Program CARES Act [Member]
Debt Instrument, Decrease, Forgiveness		$ 2,000