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Redeemable Convertible Preferred Stock (Details 1) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Derivatives, Fair Value [Line Items]        
Balance     $ 70,786  
Increase of fair value $ (2,599) $ 1,279 (538) $ 11,515
Ending balance $ 71,324   $ 71,324