Leases - Schedule of Maturities of Operating and Financing Lease Liabilties (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
2019 (remaining)	$ 412
2020	1,431
2021	1,258
2022	1,192
2023	344
Total minimum lease payments	4,637
Less: amount of lease payments representing effects of discounting	479
Present value of future minimum lease payments	4,158
Less: current obligations under leases	1,367
Total lease liabilities	2,791
2019 (remaining)	90
2020	226
2021	120
2022	13
2023
Total minimum lease payments	449
Less: amount of lease payments representing effects of discounting	29
Present value of future minimum lease payments	420
Less: current obligations under leases	247
Total lease liabilities	$ 173