Leases Topic 840 - Future Minimum Payments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2018
840-Rent Expense [Line Items]
Operating Leases, Rent Expense	$ 32,506	$ 97,627
Operating Leases, Future Minimum Payments Due, Next Twelve Months			$ 72,280
Operating Leases, Future Minimum Payments, Due in Two Years			65,379
Operating Leases, Future Minimum Payments, Due in Three Years			57,460
Operating Leases, Future Minimum Payments, Due in Four Years			52,607
Operating Leases, Future Minimum Payments, Due in Five Years			47,837
Operating Leases, Future Minimum Payments, Due Thereafter			155,897
Operating Leases, Future Minimum Payments Due			$ 451,460
General and Administrative Expense [Member]
840-Rent Expense [Line Items]
Operating Leases, Rent Expense	32,058	96,370
Cost of Sales [Member]
840-Rent Expense [Line Items]
Operating Leases, Rent Expense	$ 448	$ 1,257