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Note 6 - Intangible Assets, Net - Expected Amortization Expense in Future Periods (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
2022 (remaining nine months) $ 3,357  
2023 590  
2024 452  
2025 240  
2026 160  
Total expected future amortization expense $ 4,799 $ 6,505