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Leases - Maturities of Finance Lease Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
Remainder of 2020 $ 167  
2021 266  
2022 199  
2023 199  
2024 199  
Thereafter 0  
Total minimum lease payments 1,030  
Less: present value adjustment (76)  
Finance lease liabilities $ 954 $ 1,100