Leases - Schedule of Future Minimum Lease Payments to be Paid under Operating Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
2019 (remaining three months)	$ 724
2020	2,782
2021	2,231
2022	1,291
2023	1,201
Thereafter	2,182
Total future lease payments	10,411
(Present value adjustment)	(1,121)
Present value of future lease payments	$ 9,290	$ 11,087