Leases - Schedule of Maturities of Operating Lease Liabilities and Sublease Income (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases Payments
Remainder of 2019	$ 9,473
2020	12,242
2021	11,917
2022	12,296
2023	12,728
Thereafter	68,831
Gross lease payments (income)	127,487
Less: Imputed interest	38,820
Operating lease liabilities	88,667
Sublease Income
Remainder of 2019	(3,524)
2020	(2,898)
2021	(2,535)
2022	(336)
2023	0
Thereafter	0
Gross lease payments (income)	$ (9,293)