Segment Information (Schedule Of Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 segment		Mar. 31, 2013
Segment Reporting Information [Line Items]
Number of reportable segments	2
Percentage of revenue and income earned in one geographic segment	99.00%
Revenues	$ 312,165		$ 273,904
Income before income taxes	23,129		18,957
Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Revenues	204,741		187,630
Income before income taxes	18,752		18,806
Dietary Services [Member]
Segment Reporting Information [Line Items]
Revenues	107,424		86,274
Income before income taxes	6,780		5,124
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0		0
Income before income taxes	$ (2,403)	[1]	$ (4,973)	[1]

[1] Represents primarily corporate office cost and related overhead, recording of transactions at the reportable segment level which use methods other than U.S. GAAP, as well as consolidated subsidiaries’ operating expenses that are not allocated to the reportable segments, net of investment and interest income.