Leases Lease Maturity Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months			$ 32,113
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 28,641
Lessee, Operating Lease, Liability, Payments, Due Year Two	21,429
Lessee, Operating Lease, Liability, Payments, Due Year Three	13,325
Finance Lease, Liability, Payments, Due Year Four	8,493
Lessee, Operating Lease, Liability, Payments, Due Year Five	5,008
Lessee, Operating Lease, Liability, Payments, Due after Year Five	22,131
Lessee, Operating Lease, Liability, Payments, Due	99,027
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(10,297)
Operating Lease, Liability	$ 88,730	$ 93,500
Operating Leases, Future Minimum Payments, Due in Two Years			23,771
Operating Leases, Future Minimum Payments, Due in Three Years			16,986
Operating Leases, Future Minimum Payments, Due in Four Years			9,855
Operating Leases, Future Minimum Payments, Due in Five Years			7,435
Operating Leases, Future Minimum Payments, Due Thereafter			5,081
Operating Leases, Future Minimum Payments Due			$ 95,241