Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Major classifications of property and equipment
Carrying Amount	$ 237,183				$ 291,245
Accumulated Depreciation	(131,283)				(174,964)
Net Book Value	105,900	$ 109,458	$ 111,419	$ 114,539	116,281	$ 110,312	$ 118,979	$ 114,082
Land [Member]
Major classifications of property and equipment
Carrying Amount	4				4
Accumulated Depreciation	0				0
Net Book Value	4				4
Buildings and improvements [Member]
Major classifications of property and equipment
Carrying Amount	95,365				119,489
Accumulated Depreciation	(45,893)				(71,040)
Net Book Value	49,472				48,449
Furniture and equipment [Member]
Major classifications of property and equipment
Carrying Amount	101,206				126,619
Accumulated Depreciation	(54,498)				(76,227)
Net Book Value	46,708				50,392
Capital lease equipment [Member]
Major classifications of property and equipment
Carrying Amount	1,600				1,600
Accumulated Depreciation	(756)				(436)
Net Book Value	844				1,164
Software [Member]
Major classifications of property and equipment
Carrying Amount	36,194				34,727
Accumulated Depreciation	(30,136)				(27,261)
Net Book Value	6,058				7,466
Construction in progress [Member]
Major classifications of property and equipment
Carrying Amount	2,814				8,806
Accumulated Depreciation	0				0
Net Book Value	$ 2,814				$ 8,806