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Fair Value (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Fair Value [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed rate long-term debt $ 24,688,000 $ 24,211,000
Carrying Value [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed rate long-term debt 24,858,000 24,341,000
Carrying value of debt discount $ 1,142,000 $ 1,847,000