Goodwill and Other Intangible Assets, Net (Details) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Jan. 01, 2012
Schedule of intangible assets
Gross carrying amount	$ 232,358	$ 232,374
Accumulated amortization	(41,615)	(32,032)
Net carrying amount	190,743	200,342
Facility Management Contracts [Member]
Schedule of intangible assets
Gross carrying amount	158,588	158,604
Accumulated amortization	(29,528)	(22,985)
Net carrying amount	129,060	135,619
Noncompete Agreements [Member]
Schedule of intangible assets
Gross carrying amount	8,570	8,570
Accumulated amortization	(7,872)	(6,347)
Net carrying amount	698	2,223
Technology [Member]
Schedule of intangible assets
Gross carrying amount	21,200	21,200
Accumulated amortization	(4,215)	(2,700)
Net carrying amount	16,985	18,500
Trade Names [Member]
Schedule of intangible assets
Trade name	$ 44,000	$ 44,000