Annual report pursuant to Section 13 and 15(d)

Business and Viability of Operations (Details)

v3.20.1
Business and Viability of Operations (Details)
 1 Months Ended 12 Months Ended
Oct. 16, 2019
USD ($)
$ / shares
shares
May 24, 2019
USD ($)
$ / shares
shares
Apr. 18, 2019
USD ($)
$ / shares
shares
Jul. 26, 2018
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
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      
Common Stock, Shares, Issued | shares         24,873,191 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)         $ (187,678,000) $ (175,640,000)      
Cash and Cash Equivalents, at Carrying Value         298,000 3,218,000      
Proceeds from Issuance of Common Stock         6,149,000 10,273,000      
Stock Issued During Period, Value, New Issues         $ 6,149,000 $ 10,272,000      
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   3,222     208,350  
Series A Preferred Stock [Member]                  
Shares, Issued | shares     250,000            
Temporary Equity, Par or Stated Value Per Share | $ / shares     $ 4.00            
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   $ 500,000        
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          
Registered Direct Offering                  
Number of aggregate common shares issued | shares 2,500,000                
Public offering price | $ / shares $ 0.70                
Registered Direct Offering | Prospectus Supplement [Member]                  
Gross proceeds $ 1,750,000                
Proceeds from offering used for working capital purposes $ 1,485,000