Annual report pursuant to Section 13 and 15(d)

Common Stock (Details)

v3.7.0.1
Common Stock (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
vote / shares
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
May 31, 2015
USD ($)
Dec. 01, 2014
USD ($)
Equity [Abstract]        
Common stock, par value (in dollars per share) | $ / shares $ 0.001 $ 0.001    
Common stock voting rights, number of votes per share | vote / shares 1      
Exercise of options and warrants (in shares) | shares 10,352 265,484    
Proceeds from exercise of options and warrants $ 35,533      
Subsidiary, Sale of Stock [Line Items]        
Shares issued in offering (in shares) | shares   2,225,825    
Gross proceeds before underwriting discounts and offering expenses   $ 17,250,144    
Net cash proceeds from issuance of common stock 0 15,924,405    
Offering fees and expenses   1,325,739    
Net proceeds from exercise of options and warrants $ 35,533 $ 653,828    
Restricted shares of common stock granted (in shares) | shares   10,000    
Aggregate value of common stock     $ 58,000,000 $ 75,000,000
Underwriting discount        
Subsidiary, Sale of Stock [Line Items]        
Offering fees and expenses   $ 1,035,008    
Other costs        
Subsidiary, Sale of Stock [Line Items]        
Offering fees and expenses   $ 290,731    
Overallotment        
Subsidiary, Sale of Stock [Line Items]        
Shares issued in offering (in shares) | shares   290,325