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Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
Operating ROU assets $ 1,165
Current portion of operating lease liabilities 251
Operating lease liabilities, net of current portion 956
Total operating lease liabilities $ 1,207  
Weighted average remaining lease term, operating leases 4 years 2 months 12 days  
Weighted average discount rate, operating leases 8.00%