Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Schedule of intangible assets
Gross Carrying Amount	$ 225,453	$ 225,683
Accumulated Amortization	(54,710)	(47,365)
Net Carrying Amount	126,743
Intangible Assets, Net (Excluding Goodwill)	170,743	178,318
Facility management contracts
Goodwill [Line Items]
Weighted Average Useful Life (years)	13 years 4 months 24 days
Schedule of intangible assets
Gross Carrying Amount	151,683	151,913
Accumulated Amortization	(38,897)	(33,141)
Net Carrying Amount	112,786	118,772
Covenants not to compete
Goodwill [Line Items]
Weighted Average Useful Life (years)	2 years
Schedule of intangible assets
Gross Carrying Amount	8,570	8,570
Accumulated Amortization	(8,570)	(8,495)
Net Carrying Amount	0	75
Technology
Goodwill [Line Items]
Weighted Average Useful Life (years)	7 years
Schedule of intangible assets
Gross Carrying Amount	21,200	21,200
Accumulated Amortization	(7,243)	(5,729)
Net Carrying Amount	13,957	15,471
Trade names
Schedule of intangible assets
Accumulated Amortization	0	0
Trade name (Indefinite lived)	44,000	44,000
Trade name	$ 44,000	$ 44,000