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Redeemable Convertible Preferred Stock (Details 1) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Balance as of January 1, 2013     $ 108,839  
Decrease of fair value 38,136 (29,158) 37,200 (33,253)
Ending balance as of June 30, 2013 $ 71,639   $ 71,639