Segment Information (Schedule Of Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014 segment		Jun. 30, 2013
Segment Reporting Information [Line Items]
Number of reportable segments					2
Percentage of revenue and income earned in one geographic segment					99.00%
Revenues	$ 319,295		$ 273,604		$ 631,460		$ 547,508
Income before income taxes	22,043		19,858		45,172		38,815
Operating Segments [Member] | Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Revenues	211,357		183,754		416,098		371,384
Income before income taxes	17,883		17,632		36,635		36,438
Operating Segments [Member] | Dietary Services [Member]
Segment Reporting Information [Line Items]
Revenues	107,938		89,850		215,362		176,124
Income before income taxes	6,518		5,341		13,298		10,465
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0		0		0		0
Income before income taxes	$ (2,358)	[1]	$ (3,115)	[1]	$ (4,761)	[1]	$ (8,088)	[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.