Goodwill and Other Intangible Assets, Net (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Jan. 01, 2012
Schedule of intangible assets
Gross carrying amount	$ 225,683	$ 225,774
Accumulated amortization	(47,365)	(30,058)
Intangible Assets, Net (Excluding Goodwill)	178,318	195,716
Net carrying amount	134,318	195,716
Facility Management Contracts [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	13 years 4 months 24 days
Schedule of intangible assets
Gross carrying amount	151,913	152,004
Accumulated amortization	(33,141)	(21,010)
Net carrying amount	118,772	130,994
Covenants not to compete [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Schedule of intangible assets
Gross carrying amount	8,570	8,570
Accumulated amortization	(8,495)	(6,348)
Net carrying amount	75	2,222
Technology [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Schedule of intangible assets
Gross carrying amount	21,200	21,200
Accumulated amortization	(5,729)	(2,700)
Net carrying amount	15,471	18,500
Trade Names [Member]
Schedule of intangible assets
Accumulated amortization	0	0
Indefinite-Lived Intangible Assets (Excluding Goodwill)	44,000	44,000
Indefinite-Lived Trade Names	$ 44,000	$ 44,000