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Commitments and Contingent Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]    
2019 $ 164  
2020 627  
2021 619  
2022 568  
2023 439  
Total lease payments 2,417  
Less: imputed interest (512)  
Present value of future lease payments 1,905  
Less: current maturities of operating leases 612
Non-current operating leases $ 1,293
Weighted-average remaining lease term (in years) 3 years 3 months 15 days  
Weighted-average discount rate 12.50%