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Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Goodwill [Line Items]      
Amortization expense $ 1,971,000 $ 1,900,000 $ 1,571,000
Goodwill by reportable operating segment 16,955,000 16,955,000  
Customer Relationships [Member]
      
Goodwill [Line Items]      
Weighted-average amortization period, years 7    
Non-Compete Agreements [Member]
      
Goodwill [Line Items]      
Weighted-average amortization period, years 8    
Maximum [Member]
      
Goodwill [Line Items]      
Estimated useful life of intangible assets, years 8    
Minimum [Member]
      
Goodwill [Line Items]      
Estimated useful life of intangible assets, years 7    
Housekeeping Segment [Member]
      
Goodwill [Line Items]      
Goodwill by reportable operating segment 14,894,000 14,894,000  
Dietary Segment [Member]
      
Goodwill [Line Items]      
Goodwill by reportable operating segment $ 2,061,000 $ 2,061,000