Leases Leases Other Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases term and discount rate
Operating Lease, Weighted Average Remaining Lease Term	9 years
Finance Lease, Weighted Average Remaining Lease Term	10 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.20%
Leases other information
Sale and Leaseback Transaction, Gain (Loss), Net	$ 3,987
Cash paid for amounts included in the measurement of lease liabilities
Operating Lease, Payments	153,587
Finance Lease, Interest Payment on Liability	5,661
Finance Lease, Principal Payments	5,344
Net Operating Lease Assets Obtained In Exchange For Lease Liabilities	$ 45,034
Finance Lease
Leases term and discount rate
Finance Lease, Weighted Average Discount Rate, Percent	4.84%