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           Stock Based Awards (Details 2) (USD $) 
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           Dec. 31, 2014 
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           Dec. 31, 2013 
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| Equity [Abstract] | ||
| Conversion of preferred stock | 148,494,693us-gaap_ConvertiblePreferredStockSharesReservedForFutureIssuance | |
| Stock options issued and outstanding | 19,600,112cocp_StockOptionsIssuedAndOutstanding | 4,402,900cocp_StockOptionsIssuedAndOutstanding | 
| Authorized for future option grants | $ 32,822,534us-gaap_GrantsReceivable | $ 1,647,632us-gaap_GrantsReceivable | 
| Warrants outstanding | 26,669,000us-gaap_ClassOfWarrantOrRightOutstanding | |
| Total | 79,091,646us-gaap_CommonStockCapitalSharesReservedForFutureIssuance | 154,545,225us-gaap_CommonStockCapitalSharesReservedForFutureIssuance | 
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- Definition 
          Stock options issued and outstanding. No definition available. 
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- Definition 
          Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Aggregate number of nonredeemable convertible preferred shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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- Definition 
          Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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