Leases Future Minimum Lease Payments for Capital and Operating Leases (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 11,405
Capital Leases, Future Minimum Payments Due in Two Years	17,261
Capital Leases, Future Minimum Payments Due in Three Years	8,668
Capital Leases, Future Minimum Payments Due in Four Years	9,625
Capital Leases, Future Minimum Payments Due in Five Years	10,780
Capital Leases, Future Minimum Payments Due Thereafter	13,988
Capital Leases, Future Minimum Payments Due	71,727
Operating Leases, Future Minimum Payments Due, Next Twelve Months	82,191
Operating Leases, Future Minimum Payments, Due in Two Years	63,062
Operating Leases, Future Minimum Payments, Due in Three Years	54,305
Operating Leases, Future Minimum Payments, Due in Four Years	44,739
Operating Leases, Future Minimum Payments, Due in Five Years	35,919
Operating Leases, Future Minimum Payments, Due Thereafter	383,739
Operating Leases, Future Minimum Payments Due	$ 663,955