Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Goodwill	$ 16,955,000	$ 16,955,000	$ 16,955,000
Amortization expense	468,000	936,000
Maximum [Member]
Estimated useful life of intangible assets		8
Minimum [Member]
Estimated useful life of intangible assets		7
2009 Acquisition Of Contract Environmental Services, Inc. (CES) [Member]
Goodwill from acquisition, deduction period for tax purposes, years		15
Housekeeping Segment [Member]
Goodwill	14,894,000	14,894,000	14,894,000
Dietary Segment [Member]
Goodwill	$ 2,061,000	$ 2,061,000	$ 2,061,000
Customer Relationships [Member]
Weighted-average amortization period		7
Non-Compete Agreements [Member]
Weighted-average amortization period		8