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Commitments and Contingencies - Supplemental Cash Flow (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Supplemental cash flow information related to the operating lease was as follows (in thousands):      
Operating cash flows from operating leases $ 71 $ 78  
Operating leases $ 70    
Right of use asset     $ 68
Lease liability     $ 70
Weighted average remaining lease term     8 months 12 days
Weighted average discount rate     5.50%
Maturity of the lease liability was as follows (in thousands):      
Total     $ 70