Quarterly report pursuant to Section 13 or 15(d)

Business and Viability of Operations (Details)

v3.20.2
Business and Viability of Operations (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
May 18, 2020
Feb. 28, 2020
Apr. 18, 2019
Mar. 31, 2020
Jun. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Aug. 13, 2020
Jun. 30, 2020
Feb. 29, 2020
Feb. 06, 2020
Nov. 18, 2019
Mar. 31, 2019
Dec. 31, 2018
Stockholders' equity       $ (672,000) $ 3,476,000 $ 9,285,000 $ 907,000 $ 594,000 [1] $ 11,700,000 $ 11,675,000       $ 1,177,000 $ 3,818,000
Common Stock, Shares, Issued           7,822,375   1,245,238              
Proceeds from Issuance of Common Stock           $ 6,240,000 4,664,000                
Stock Issued During Period, Value, New Issues       $ 725,000 $ 4,664,000                    
Stock Issued During Period, Shares, New Issues 60,250                            
Temporary Equity, Par or Stated Value Per Share           $ 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     12,756                 4,553      
Cash and cash equivalents           $ 9,104,000   $ 298,000 [1]              
Accumulated deficit           (196,746,000)   $ (187,678,000) [1]              
Net cash used in operations           (7,499,000) $ (8,454,000)                
Payroll Protection Program Note Agreement                              
Loan           $ 847,000                  
February 2020 Private Placement [Member]                              
Payments of Stock Issuance Costs   $ 83,000                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   4,553                 45,534        
Series A Preferred Stock                              
Temporary Equity, Par or Stated Value Per Share           $ 0.0001                  
Temporary Equity, Stated Value Per Share     $ 4.00                        
Temporary Equity, Dividend Rate, Percentage     8.00%                        
Convertible Preferred Stock Conversion Price     $ 80.00     $ 80.00                  
Convertible Preferred Stock Floor Price Per Share     $ 30.00                        
Proceeds from Issuance of Convertible Preferred Stock     $ 1,000,000     $ 920,000                  
Maximum | Series A Preferred Stock                              
Proceeds from Issuance of Convertible Preferred Stock     5,000,000                        
Minimum                              
Stockholders' equity                         $ 2,500,000    
Minimum | Series A Preferred Stock                              
Proceeds from Issuance of Convertible Preferred Stock     $ 500,000                        
[1] The condensed consolidated balance sheet as of December 31, 2019 was derived from the audited consolidated balance sheet as of that date.