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Derivative Financial Instruments - Warrants Liability (Details) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended 2 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
warrantholder
Jul. 31, 2011
May 31, 2011
May 2011 Offering [Member]
Sep. 11, 2012
September 2012 Offering [Member]
Dec. 31, 2013
Warrant [Member]
Dec. 31, 2012
Warrant [Member]
Dec. 31, 2011
Warrant [Member]
Jun. 30, 2012
Private Transaction with Nineteen Warrant Holders [Member]
Dec. 31, 2012
Private Transaction with Nineteen Warrant Holders [Member]
Feb. 04, 2013
Private Transaction with a Warrant Holder [Member]
Dec. 31, 2013
Private Transaction with a Warrant Holder [Member]
Sep. 23, 2013
Warrants - $0.25 exercise price [Member]
Sep. 23, 2013
Warrants - $0.50 exercise price [Member]
Derivative [Line Items]                              
Common shares linked to derivative warrants (shares)       250 153,882   14,360,276 128,350 154,132            
Issuance of warrants, public offering (shares)           110,000                  
Class of warrant or right, number of warrant holders     19                        
Conversion of notes payable into common stock (shares) 6,903,872 2,069,439               123,052   5,001      
Loss on exchange of warrants and debt $ 94,214 $ 802,123                 $ 802,123   $ 732    
Class of warrant or right, number of securities called by warrants or rights (shares)                           7,118,236 7,118,236
Class of warrant or right, exercise price of warrants or rights (per share)                           0.25 0.50
Fair value of warrants issued to investors in private placement (shares)             2,344,899                
Change in fair value of derivative             $ 514,704 $ 779,083