Segment Information (Schedule Of Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013 segment		Sep. 30, 2012
Segment Reporting Information [Line Items]
Number of reportable segments					2
Percentage of revenue and income earned in one geographic segment					99.00%
Revenues	$ 298,549		$ 272,681		$ 846,057		$ 800,396
Income before income taxes	21,193		18,573		60,008		50,639
Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Revenues	193,526		186,182		564,910		550,579
Income before income taxes	17,229		17,318		53,667		52,445
Dietary Services [Member]
Segment Reporting Information [Line Items]
Revenues	105,023		86,377		281,147		249,658
Income before income taxes	6,135		4,882		16,600		13,556
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0		122	[1]	0		159	[1]
Income before income taxes	$ (2,171)	[1]	$ (3,627)	[1]	$ (10,259)	[1]	$ (15,362)	[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.