Segment Information (Revenues And Income Before Income Taxes) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Revenues	$ 211,507,000		$ 192,954,000		$ 419,897,000		$ 376,755,000
Income before income taxes	14,717,000		14,181,000		27,056,000		26,258,000
Housekeeping Services [Member]
Revenues	158,681,000		149,519,000		315,143,000		290,415,000
Income before income taxes	16,195,000		14,492,000		33,390,000		29,350,000
Dietary Services [Member]
Revenues	52,897,000		43,420,000		104,554,000		86,374,000
Income before income taxes	2,521,000		2,119,000		5,990,000		4,309,000
Corporate And Eliminations [Member]
Revenues	(71,000)	[1]	15,000	[1]	200,000	[1]	(34,000)	[1]
Income before income taxes	$ (3,999,000)	[1]	$ (2,430,000)	[1]	$ (12,324,000)	[1]	$ (7,401,000)	[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 and consolidated subsidiaries' operating expenses that are not allocated to the reportable segments, net of investment and interest income.