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Leases - Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Leases    
2021 (excluding the three months ended March 31, 2021) $ 411  
2022 477  
2023 410  
2024 361  
2025 371  
2026 and thereafter 664  
Total lease payments 2,694  
Less: Interest (392)  
Lease liabilities $ 2,302 $ 2,400