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Selling Arrangement (Details 2) (Selling Agreement, USD $)
Dec. 31, 2013
Dec. 31, 2012
Selling Agreement
   
Selling Arrangement    
Gross cost $ 4,000,000 $ 4,000,000
Accumulated amortization (1,083,000) (683,000)
Net carrying amount $ 2,917,000 $ 3,317,000