Supplemental Consolidated Balance Sheet Information (Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 157,090	$ 138,769
Less: accumulated depreciation and amortization	(99,941)	(94,431)
Property and equipment, net	57,149	44,338
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	67,509	62,486
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	59,479	43,867
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 30,102	$ 32,416