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Note I - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Statute of Limitations (Year) 3 years  
Income Tax Examination, Penalties and Interest Expense, Total $ 0 $ 0
Effective Income Tax Rate Reconciliation, Percent 25.70% 24.30%
Open Tax Year 2019 2020 2021 2022