Note I - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Proceeds from Income Tax Refunds	$ 1,391
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%
Deferred Tax Assets, Valuation Allowance	7,652	$ 25,894
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	18,200
Domestic Tax Authority [Member]
Tax Credit Carryforward, Amount	4,200
Foreign Tax Authority [Member]
Tax Credit Carryforward, Amount	500
Operating Loss Carryforwards		$ 5,400
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	105,700
Tax Year 2019 [Member]
Proceeds from Income Tax Refunds			$ 6,400
Tax Year 2018 [Member]
Proceeds from Income Tax Refunds			$ 3,200
Tax Year 2020 [Member]
Expected Proceeds from Income Tax Refunds, Carryback of Loss	2,500
Tax Year 2022 [Member]
Expected Proceeds from Income Tax Refunds, Carryback of Loss	$ 5,300