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Summary of Significant Accounting Policies (Details 2)	3 Months Ended
Summary of Significant Accounting Policies (Details 2)	Mar. 31, 2014	Mar. 31, 2013
Net loss per common share
Antidilutive securities excluded from computations of diluted net loss per common share	2,636,859	1,089,058
Warrants to purchase common stock
Net loss per common share
Antidilutive securities excluded from computations of diluted net loss per common share	88,545	38,997
Options to purchase common stock
Net loss per common share
Antidilutive securities excluded from computations of diluted net loss per common share	2,548,314	1,050,061

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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