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Leases - Minimum Future Rental Commitments, Topic 842 (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
2019 $ 234  
2020 456  
2021 448  
2022 301  
2023 250  
Thereafter 2,009  
Total lease payments 3,698  
Less imputed interest (657)  
Total operating lease liabilities $ 3,041 $ 3,230