Fixed Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Abstract]
Land	$ 26,770,000	$ 26,770,000
Buildings and improvements	127,940,000	126,726,000
Furniture and equipment	108,819,000	106,788,000
Capitalized software	147,140,000	133,477,000
Leasehold improvements	8,610,000	7,593,000
Fixed assets, gross	419,279,000	401,354,000
Less accumulated depreciation and amortization	(262,563,000)	(239,414,000)
Fixed assets, net	156,716,000	161,940,000
Depreciation expense	$ 24,600,000	$ 30,800,000	$ 34,300,000