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- Maturities of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
2020 $ 700  
2021 930  
2022 869  
2023 889  
2024 880  
2025 and thereafter 5,347  
Total minimum lease payments 9,615  
Less: amount representing interest (1,696)  
Operating lease liabilities $ 7,919 $ 8,084