Segment Information (Revenues By Client Services) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue from External Customer [Line Items]
Revenues	$ 320,099	$ 298,549	$ 951,559	$ 846,057
Housekeeping Services [Member]
Revenue from External Customer [Line Items]
Revenues	147,812	132,340	437,358	381,284
Laundry and Linen Services [Member]
Revenue from External Customer [Line Items]
Revenues	63,241	60,480	188,766	180,782
Dietary Services [Member]
Revenue from External Customer [Line Items]
Revenues	108,547	105,023	323,909	281,147
Maintenance Services and Other [Member]
Revenue from External Customer [Line Items]
Revenues	$ 499	$ 706	$ 1,526	$ 2,844