Leases Leases Supplemental Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Finance Lease, Liability	$ 55,880
Operating Lease, Liability	72,351
Operating Lease, Right-of-Use Asset	70,442	$ 0
Operating Lease, Liability, Current	4,123
Operating Lease, Liability, Noncurrent	68,228	0
Finance Lease, Right-of-Use Asset	52,800	0
Finance Lease, Liability, Current	2,730
Finance Lease, Liability, Noncurrent	$ 53,150	$ 0
Operating Lease, Weighted Average Remaining Lease Term	27 years 3 days
Finance Lease, Weighted Average Remaining Lease Term	8 years 4 months 20 days
Operating Lease, Weighted Average Discount Rate, Percent	3.82%
Finance Lease, Weighted Average Discount Rate, Percent	4.88%