Discontinued Operations Statement of Operations, Disposal Group (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 728	$ 1,564
Cost of services (exclusive of facility rent, general and administrative and depreciation and amortization expense shown separately below)	0	(807)	(3,646)
Charges to discontinued operations for the excess carrying amount of goodwill and other indefinite-lived intangible assets	0	(2,837)	0
Disposal Group, Discontinued Operations, Gain (Loss) on Disposal		2,837
Facility rent - cost of services	0	(12)	(38)
Depreciation and amortization	0	(33)	(106)
Loss from discontinued operations	0	(2,961)	(2,226)
Benefit from income taxes	0	(1,157)	(869)
Loss from discontinued operation, net of income tax benefit	$ 0	$ (1,804)	$ (1,357)