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Note 6 - Leases - Future Minimum Payments (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
2022 $ 1,230  
2023 1,297  
2024 962  
2025 543  
2026 510  
Thereafter 1,961  
Total future minimum operating lease payments 6,503  
Amounts representing interest (1,043)  
Other Liabilities [Member]    
Present value of net future minimum operating lease payments $ 5,460 $ 5,075