Leases Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due Year Two	$ 24,719
Lessee, Operating Lease, Liability, Payments, Due Year Three	18,844
Lessee, Operating Lease, Liability, Payments, Due Year Four	14,777
Lessee, Operating Lease, Liability, Payments, Due Year Five	11,149
Lessee, Operating Lease, Liability, Payments, Due after Year Five	15,207
Lessee, Operating Lease, Liability, Payments, Due	101,821
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(8,591)
Operating Lease, Liability	$ 87,331	$ 85,516
Lessee, Operating Lease, Option to Extend	P10Y
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 17,125
Lessee, Operating Lease, Term of Contract	10 years
Finance Lease, Liability, Payments, Remainder of Fiscal Year	$ 358
Finance Lease, Liability, Payments, Due Year Two	716
Finance Lease, Liability, Payments, Due Year Three	716
Finance Lease, Liability, Payments, Due Year Four	716
Finance Lease, Liability, Payments, Due Year Five	716
Finance Lease, Liability, Payments, Due after Year Five	2,612
Finance Lease, Liability, Payments, Due	5,834
Finance Lease, Liability, Undiscounted Excess Amount	(618)
Finance Lease, Liability	5,216
Operating Leases [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease Commitment, Amount	(5,899)
Finance Leases [Member]
Lessee, Lease, Description [Line Items]
Short-term Lease Commitment, Amount	$ 0