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Lease - Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Leases (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
Remainder of 2019 $ 40  
2020 158  
2021 163  
2022 161  
2023 92  
Thereafter 583  
Total future minimum lease payments 1,197  
Less imputed interest (102)  
Total operating lease liability $ 1,095