Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Remainder of 2019	$ 1,540
2020	4,969
2021	5,050
2022	4,213
2023	4,076
2024	4,097
Thereafter	12,705
Total remaining lease payments	36,650
Less: imputed interest	(9,253)
Operating Lease, Liability, Total	27,397	$ 10,100
Less: current portion	(3,527)
Long-term portion of operating leases	$ 23,870
Operating lease, weighted average remaining lease term	8 years 1 month 6 days
Operating lease, weighted average discount rate (as a percent)	6.50%