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Leases (Details) - Supplemental information regarding leases - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Leases (Details) - Supplemental information regarding leases [Line Items]    
ROU assets $ 1,187
Current lease liabilities 291
Non-current lease liabilities 932
Total lease liabilities $ 1,223  
Weighted average remaining lease term (years) 2 years 292 days  
Weighted average discount rate 8.90%  
Future minimum lease payments:    
2019 $ 123  
2020 349  
2021 342  
2022 348  
2023 295  
Thereafter  
Total 1,457  
Less: Imputed interest 234  
Total lease liabilities 1,223  
Less: Current lease liabilities 291
Long-term lease liabilities $ 932