Leases (Schedule of Lease Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Schedule of Lease Liabilities [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 20,842
Lessee, Operating Lease, Liability, Payments, Due Year Two	27,856
Lessee, Operating Lease, Liability, Payments, Due Year Three	7,726
Lessee, Operating Lease, Liability, Payments, Due Year Four	3,697
Lessee, Operating Lease, Liability, Payments, Due Year Five	3,680
Lessee, Operating Lease, Liability, Payments, Due after Year Five	21,608
Lessee, Operating Lease, Liability, Payments, Due	85,409
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(14,834)
Operating Lease, Liability	70,575	$ 75,200
Finance Lease, Liability, Payments, Remainder of Fiscal Year	1,113
Finance Lease, Liability, Payments, Due Year Two	1,475
Finance Lease, Liability, Payments, Due Year Three	275
Finance Lease, Liability, Payments, Due Year Four	234
Finance Lease, Liability, Payments, Due Year Five	232
Finance Lease, Liability, Payments, Due after Year Five	39
Finance Lease, Liability, Payments, Due	3,368
Finance Lease, Liability, Undiscounted Excess Amount	(416)
Finance lease liability	$ 2,952