Segment Information (Schedule Of Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011		Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 segment		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Number of reportable segments											2
Revenues											$ 1,077,435		$ 889,065		$ 773,956
Income before income taxes	19,625		18,573	18,283	13,783	15,567		15,189	14,717	12,339	70,264		57,812		54,119
Depreciation and amortization											5,116		4,387		3,764
Total assets	331,183					289,695					331,183		289,695		277,934
Capital expenditures											3,484		5,545		4,174
Housekeeping Services [Member]
Segment Reporting Information [Line Items]
Revenues											737,407		654,886		595,924
Income before income taxes											69,429		63,395		56,087
Depreciation and amortization											4,069		3,428		2,874
Total assets	144,412					135,223					144,412		135,223		124,494
Capital expenditures											2,765		4,697		3,693
Dietary Services [Member]
Segment Reporting Information [Line Items]
Revenues											339,855		234,247		178,061
Income before income taxes											18,474		11,678		7,584
Depreciation and amortization											676		614		595
Total assets	62,263					57,034					62,263		57,034		39,683
Capital expenditures											453		372		144
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues											173	[1]	(68)	[1]	(29)	[1]
Income before income taxes											(17,639)	[1]	(17,261)	[1]	(9,552)	[1]
Depreciation and amortization											371		345		295
Total assets	124,508	[2]				97,438	[2]				124,508	[2]	97,438	[2]	113,757	[2]
Capital expenditures											$ 266		$ 476		$ 337

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

[2] represents primarily cash and cash equivalents, marketable securities, deferred income taxes and other current and noncurrent assets.