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Note 8 - Intangible Assets - Estimated Remaining Amortization Expense (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
2022 $ 428      
2023 502      
2024 337      
2025 300      
2026 268      
2027 240      
After 284      
Total $ 2,359 $ 2,505 $ 2,973 $ 3,133