Segment Information (Revenues By Client Services) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]
Revenues	$ 1,149,890	$ 1,077,435	$ 889,065
Housekeeping Services [Member]
Revenue from External Customer [Line Items]
Revenues	514,180	492,319	440,924
Laundry and Linen Services [Member]
Revenue from External Customer [Line Items]
Revenues	241,540	240,670	210,896
Dietary Services [Member]
Revenue from External Customer [Line Items]
Revenues	390,797	339,867	234,542
Maintenance Services and Other [Member]
Revenue from External Customer [Line Items]
Revenues	$ 3,373	$ 4,579	$ 2,703