Goodwill and Other Intangible Assets, Net (Intangible Assets) (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of intangible assets
Accumulated amortization	$ (87,793)	$ (68,516)
Finite-lived intangible assets	178,948
Intangible assets, gross carrying amount	311,941	223,791
Total acquired intangible assets, Net carrying amount	224,148	155,275
Trade name
Schedule of intangible assets
Accumulated amortization	0	0
Indefinite lived intangible assets	$ 45,200	45,200
Facility Management Contracts
Goodwill [Line Items]
Amortization period	15 years 7 months 6 days
Schedule of intangible assets
Gross carrying amount	$ 233,041	154,591
Accumulated amortization	(71,538)	(56,396)
Finite-lived intangible assets	$ 161,503	98,195
Technology
Goodwill [Line Items]
Amortization period	7 years 3 months 18 days
Schedule of intangible assets
Gross carrying amount	$ 33,700	24,000
Accumulated amortization	(16,255)	(12,120)
Finite-lived intangible assets	$ 17,445	$ 11,880