Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Operating Leases
2019 (excluding the six months ended June 30, 2019)	$ 63,580
2020	111,011
2021	102,040
2022	88,118
2023	81,395
Thereafter	120,111
Total lease payments	566,255
Less interest	(52,380)
Operating lease liabilities	513,875	$ 574,500
Financing Leases
2019 (excluding the six months ended June 30, 2019)	599
2020	941
2021	296
2022	0
2023	0
Thereafter	0
Total lease payments	1,836
Less interest	(47)
Finance lease liabilities	1,789	$ 2,400
Total
2019 (excluding the six months ended June 30, 2019)	64,179
2020	111,952
2021	102,336
2022	88,118
2023	81,395
Thereafter	120,111
Total lease payments	$ 568,091