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Note 6 - Goodwill and Intangible Assets - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
2021 $ 3,731  
2022 3,731  
2023 3,701  
2024 3,635  
2025 3,463  
Thereafter 12,788  
Total $ 31,049 $ 21,982