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Note I - Intangible Assets - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
2022 $ 584  
2023 584  
2024 584  
2025 584  
2026 584  
thereafter 916  
Finite-Lived Intangible Assets, Net, Ending Balance $ 3,836 $ 3,999