Commitments and Contingencies - Schedule of Operating Lease Information Including future Minimum Lease Payments under Non-Cancellable Lease (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Operating Leases Future Minimum Payments Due [Abstract]
Operating lease cost	$ 58
Operating lease - operating cash flows	$ 61
Weighted average remaining lease term	3 years 9 months 29 days
Weighted average discount rate	15.10%
2019 (remaining nine months)	$ 186
2020	253
2021	260
2022	267
2023	10
Total future minimum lease payments	976
Less imputed interest	(231)
Total liability	745
Current operating lease liability	148
Non-current operating lease liability	597
Total	$ 745