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Selling Arrangement (Details 2) (Selling Agreement, USD $) | Dec. 31, 2013 | Dec. 31, 2012
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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

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