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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Basic and diluted numerator:    
Net loss $ (4,569,322)us-gaap_NetIncomeLoss $ (3,331,708)us-gaap_NetIncomeLoss
Basic and diluted Denominator:    
Weighted-average outstanding 24,405,813us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 19,739,470us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Basic and diluted net loss per share $ (0.19)us-gaap_EarningsPerShareBasicAndDiluted $ (0.17)us-gaap_EarningsPerShareBasicAndDiluted