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Note 7 - Intangible Assets, Net - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
2022 $ 261  
2023 256  
2024 256  
2025 251  
2026 164  
Thereafter 450  
Total estimated amortization expense $ 1,638 $ 1,053