Leases - Future Minimum Lease Obligations (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2019	$ 19,837
2020	33,476
2021	27,911
2022	23,166
2023	20,457
Thereafter	99,478
Total future lease payments	224,325
Less: imputed interest	53,355
Total	170,970
Finance Lease Liabilities, Payments, Due [Abstract]
Remainder of 2019	494
2020	606
2021	217
2022	176
2023	71
Thereafter	5
Total future lease payments	1,569
Less: imputed interest	77
Total	$ 1,492