Fixed Assets (Summary Of Fixed Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Fixed Assets [Abstract]
Furniture and equipment	$ 166,080		$ 157,974
Building and leasehold improvements	91,482		82,234
Property on operating lease	46,500		46,500
Total	304,062		286,708
Less accumulated depreciation and amortization	(155,247)		(145,305)
Fixed assets, net	148,815		141,403
Depreciation and amortization of furniture and equipment, and leasehold improvements	$ 16,610	$ 14,565