Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets, Operating Loss Carryforwards	$ 4,247	$ 4,303
Tax Credit Carryforward, Amount	300
Deferred Tax Assets, Valuation Allowance	1,844	2,009
Unrecognized Tax Benefits	18,127	19,823	$ 24,798
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	1,200
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	300	400	600
Income Tax Expense (Benefit) on Reversal of Interest and Penalties	1,100	2,300	1,600
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,200	2,000	$ 4,000
Federal and State and Local Authority [Member]
Operating Loss Carryforwards	14,400	15,100
Deferred Tax Assets, Operating Loss Carryforwards	$ 3,900	$ 4,000