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Subsequent Events (Details) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
Mar. 11, 2016
May. 31, 2010
Mar. 29, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Feb. 24, 2016
Jan. 19, 2016
Subsequent Event [Line Items]                
Proceeds from issuance of common stock       $ 10,296,689 $ 4,496,322 $ 4,906,061    
Stock options granted (in shares)       4,095,267        
Restricted stock units granted (in shares)       8,263,962        
Exercise option price (in usd per share)   $ 2.50   $ 0.54 $ 1.28 $ 2.67    
Subsequent Event                
Subsequent Event [Line Items]                
Common stock reserved (in shares)               $ 15,081,494
Annual sales limitation based on public float               33.00%
Maximum public float               $ 75,000,000
Common stock, shares issued (in shares)     1,417,648          
Proceeds from issuance of common stock     $ 317,220          
Value of common stock remaining for issuance     $ 14,754,463          
Warrants issued (in shares)             3,666,836  
Subsequent Event | 2016 Equity Incentive Plan                
Subsequent Event [Line Items]                
Stock options granted (in shares) 10,000,000              
Exercise option price (in usd per share) $ 0.33              
Employee Stock Option | Subsequent Event | 2016 Equity Incentive Plan                
Subsequent Event [Line Items]                
Stock options granted (in shares) 1,082,000              
Exercise within term of the option 4 years              
Restricted Stock Units (RSUs) | Subsequent Event | 2016 Equity Incentive Plan                
Subsequent Event [Line Items]                
Restricted stock units granted (in shares) 314,500              
Exercise within term of the option 2 years