Leases - Schedule of Maturities of Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Lease Liabilities Payments Due [Abstract]
2019 (for the remaining three months)	$ 1,160
2020	4,487
2021	4,341
2022	4,044
2023	3,929
Thereafter	2,023
Total undiscounted lease payments	19,984
Less: imputed interest	(3,756)
Total lease liabilities	$ 16,228