Leases - Future Rent Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Remaining in 2019	$ 7,017
2020	10,462
2021	11,965
2022	11,205
2023	10,462
Thereafter	73,719
Total lease payments	124,830
Less: amount of lease payments representing interest	34,074
Total operating lease liabilities	$ 90,756	$ 91,800