Leases - Lease Maturities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
2019 (remaining)	$ 13,419
2020	25,133
2021	19,367
2022	11,697
2023 (and thereafter)	17,253
Total future minimum lease payments	86,869
Less imputed interest	(436)
Total	$ 86,433