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Fair Value (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Fair Value [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed rate long-term debt $ 25,516,000 $ 22,425,000
Carrying Value [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fixed rate long-term debt 25,678,000 22,608,000
Debt discount $ 2,942,000 $ 917,000