Quarterly report pursuant to Section 13 or 15(d)

Warrant Liability - (Narrative) (Details)

v3.8.0.1
Warrant Liability - (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 28, 2017
May 15, 2017
Mar. 31, 2017
Mar. 24, 2017
Feb. 14, 2017
Feb. 09, 2017
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Stock Issued for cash, IPO             3,710,000          
Public offering price per share (in dollars per share)               $ 1.35 $ 1.35   $ 1.35  
Additional shares available for purchase                     160,000  
Net proceeds from IPO     $ 1,240,000                  
Fair value of warrants after revaluation $ 3,300,000   1,240,000 $ 1,060,000         $ 470,000 $ 0 $ 2,753,000 $ 0
Proceeds from exercise of warrants                 $ 800,000   $ 3,808,000 $ 0
Minimum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Public offering price per share (in dollars per share)             $ 1.35          
Maximum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Public offering price per share (in dollars per share)             $ 1.50          
Warrant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of warrants granted (in shares)           8,235,923         8,235,923  
Number of warrants exercised (in shares)         596,300           2,703,434  
Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Stock Issued for cash, IPO                     3,710,000  
Common stock offered for each warrant (in shares)             1          
Series C warrants vested         298,150     154,121        
Common Stock | Minimum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Public offering price per share (in dollars per share)               $ 2.52 $ 2.52   $ 2.52  
Common Stock | Maximum                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Public offering price per share (in dollars per share)               $ 2.71 $ 2.71   $ 2.71  
Underwriting Agreement                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Exercise price per warrant (in dollars per share)             $ 1.000          
Additional shares available for purchase             556,500          
Share price (in dollars per share)             $ 1.349          
Warrant combinations exercised             $ 278,100          
Net proceeds from IPO     $ 4,500,000                  
Series A Warrant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Warrant term             5 years          
Class of warrants, aggregate amounts (in shares)             278,250          
Number of warrants exercised (in shares) 12,250 1,295,995             500,739      
Series A Warrant | Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Common stock offered for each warrant (in shares)             0.50          
Series B Warrant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Warrant term             90 days          
Exercise price per warrant (in dollars per share)             $ 1.35          
Class of warrants, aggregate amounts (in shares)             556,500          
Expired Series B and Series C warrants (in shares)     3,400,000                  
Series B Warrant | Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Common stock offered for each warrant (in shares)             1          
Series C Warrant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Warrant term             5 years          
Class of warrants, aggregate amounts (in shares)             278,250          
Number of warrants exercised (in shares)   295,650             2,500      
Warrants revalued at fair value $ 1,200,000     $ 3,080,000                
Expired Series B and Series C warrants (in shares)     1,700,000                  
Series C Warrant | Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Common stock offered for each warrant (in shares)             0.50          
Series A and Series C warrant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Exercise price per warrant (in dollars per share)             $ 1.50