Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) - Public Offering (Details)

v3.6.0.2
Stockholders' Equity (Deficit) - Public Offering (Details)
12 Months Ended
Oct. 13, 2016
USD ($)
shares
Oct. 07, 2016
item
$ / shares
shares
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2015
USD ($)
shares
Shares of common stock sold     33,008,865 29,984,591
Net proceeds from issuance of common stock | $     $ 18,668,092 $ 30,968,386
October 2016 Offering        
Shares of common stock sold   2,333,334    
Public offering price (in dollars per share) | $ / shares   $ 7.50    
Number of days to underwriter to sell additional common shares   30 days    
October 2016 Offering | Directors and officers        
Shares of common stock sold   32,666    
Number of directors and officers who purchased common stock | item   5    
October 2016 Offering inclusive of over-allotment option        
Shares of common stock sold 2,683,334      
Net proceeds from issuance of common stock | $ $ 18,670,000      
Underwriting Agreement        
Shares of common stock sold 350,000 350,000