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Leases - Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Leases    
2020 (excluding the six months ended June 30, 2020) $ 143  
2021 544  
2022 477  
2023 410  
2024 361  
2025 and thereafter 1,036  
Total lease payments 2,971  
Less: Interest (456)  
Present value of lease liabilities $ 2,515 $ 2,800