Quarterly report pursuant to Section 13 or 15(d)

Business and Viability of Operations (Details)

v3.19.3
Business and Viability of Operations (Details)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May 24, 2019
USD ($)
$ / shares
shares
Apr. 18, 2019
USD ($)
$ / shares
shares
Jul. 26, 2018
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
shares
Jun. 15, 2018
shares
Jul. 23, 2010
shares
Stockholders' Equity, Reverse Stock Split                 15-for-1    
Preferred Stock, Shares Authorized | shares                 20,000,000    
Common Stock, Shares Authorized | shares           200,000,000   200,000,000 200,000,000    
Common Stock, Shares, Issued | shares           20,452,480   15,366,327 324,821   4,872,221
Preferred Stock, Shares Issued | shares     2,762,594           2,762,594   41,438,818
Retained Earnings (Accumulated Deficit)           $ (183,737,000)   $ (175,640,000) [1]      
Cash and Cash Equivalents, at Carrying Value           284,000   $ 3,218,000 [1]      
Proceeds from Issuance of Common Stock           $ 4,664,000 $ 10,273,000        
Stock Issued During Period, Value, New Issues       $ 4,664,000 $ 10,272,000            
Convertible Preferred Stock, Shares Issued upon Conversion | shares     2,762,594                
Debt Instrument, Convertible, Number of Equity Instruments     9,527,144                
Repayments of Notes Payable     $ 200,000                
Temporary Equity, Par or Stated Value Per Share | $ / shares           $ 0.0001   $ 0.0001      
Temporary Equity, Dividend Rate, Percentage           8.00%   8.00%      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares   255,102               208,350  
Series A Preferred Stock [Member]                      
Shares, Issued | shares   250,000                  
Temporary Equity, Par Value Per Share | $ / shares   $ 0.0001                  
Temporary Equity, Stated Value Per Share | $ / shares   $ 4.00                  
Temporary Equity, Dividend Rate, Percentage   8.00%                  
Convertible Preferred Stock Conversion Price | $ / shares   $ 4.00       $ 4.00          
Convertible Preferred Stock Floor Price Per Share | $ / shares   $ 1.50                  
Proceeds from Issuance of Convertible Preferred Stock   $ 1,000,000       $ 920,000          
Series A Preferred Stock [Member] | Minimum [Member]                      
Convertible Preferred Stock Conversion Price | $ / shares   $ 1.50                  
Proceeds from Issuance of Convertible Preferred Stock   $ 500,000                  
Series A Preferred Stock [Member] | Maximum [Member]                      
Proceeds from Issuance of Convertible Preferred Stock   $ 5,000,000                  
IPO [Member]                      
Shares Issued, Price Per Share | $ / shares $ 1.33   $ 5.00                
Proceeds from Issuance of Common Stock $ 4,664,000   $ 10,273,000                
Stock Issued During Period, Value, New Issues $ 5,420,000   $ 12,000,000                
Stock Issued During Period, Shares, New Issues | shares 4,075,726   2,400,000                
Payments for Underwriters Discounts and Commissions     $ 900,000                
Payments for Underwriters Accountable and Nonaccountable Expenses     220,000                
Payments of Stock Issuance Costs     $ 607,000                
[1] The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated balance sheet as of that date.