Leases Leases Other Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Leases term and discount rate
Operating Lease, Weighted Average Remaining Lease Term	9 years 1 month 6 days
Finance Lease, Weighted Average Remaining Lease Term	10 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.20%
Leases other information
Sale and Leaseback Transaction, Gain (Loss), Net	$ 10,336
Cash paid for amounts included in the measurement of lease liabilities
Operating Lease, Payments	309,115
Finance Lease, Interest Payment on Liability	10,585
Finance Lease, Principal Payments	16,910
Net Operating Lease Assets Obtained In Exchange For Lease Liabilities	$ 195,771
Finance Lease
Leases term and discount rate
Finance Lease, Weighted Average Discount Rate, Percent	5.43%