Segment Information (Revenues By Client Services) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenue from External Customer [Line Items]
Revenues	$ 312,165	$ 273,904
Housekeeping Services [Member]
Revenue from External Customer [Line Items]
Revenues	140,940	125,593
Laundry and Linen Services [Member]
Revenue from External Customer [Line Items]
Revenues	63,270	60,898
Dietary Services [Member]
Revenue from External Customer [Line Items]
Revenues	107,424	86,274
Maintenance Services and Other [Member]
Revenue from External Customer [Line Items]
Revenues	$ 531	$ 1,139