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Summary of Significant Accounting Policies (Details) - shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Potentially dilute securities excluded from calculation 2,810,832 590,728
Convertible preferred stock [Member]    
Potentially dilute securities excluded from calculation 217,119 271,413
Warrants to purchase common stock [Member]    
Potentially dilute securities excluded from calculation 2,304,333 40,452
Options to purchase common stock [Member]    
Potentially dilute securities excluded from calculation 289,380 278,863