Note I - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2020
Income Tax Expense (Benefit), Total	$ 671	$ 255	$ 1,125	$ 846
Effective Income Tax Rate Reconciliation, Percent, Total	13.10%	2.40%	12.60%	8.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
State and Local Jurisdiction [Member]
Open Tax Year			2016 2017 2018 2019 2020 2021
Foreign Tax Authority [Member]
Open Tax Year			2016 2017 2018 2019 2020 2021
Tax Year 2019 [Member]
Proceeds from Income Tax Refunds			$ 200		$ 6,400
Tax Year 2018 [Member]
Proceeds from Income Tax Refunds			$ 7,600		$ 3,200