Leases Supplemental Cash Flow Information Related to Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Cash paid for operating leases included in operating activities	$ 23,126
Cash paid for finance leases included in operating activities	722
Cash paid for finance leases included in financing activities	$ 2,288
Operating Lease, Weighted Average Remaining Lease Term	27 years
Finance Lease, Weighted Average Remaining Lease Term	5 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	3.90%
Finance Lease, Weighted Average Discount Rate, Percent	5.00%
Right-of-use assets obtained in exchange for operating lease liabilities	$ 15,038
Right-of-use assets obtained in exchange for finance lease liabilities	$ 9,926