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Notes Payable (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Sep. 24, 2020
Aug. 05, 2020
Jun. 26, 2020
Jun. 15, 2020
May 05, 2020
Feb. 05, 2020
Dec. 28, 2019
Aug. 05, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Short-term Debt [Line Items]                          
Interest expense                 $ 31,000   $ 86,000    
Notes payable                 6,254,000   6,254,000   $ 5,330,000
Accrued expenses                 1,851,000   1,851,000   $ 1,005,000
Debt instrument, convertible, conversion price (in dollars per share)         $ 0.50                
Weighted average price of common stock         70.00%                
Debt conversion rate         60.00%                
Conversion price adjusted for stock splits, stock combinations and similar events (in dollars per share)         $ 0.05                
Amortization of debt discount and fees                 95,000 373,000  
Warrant [Member]                          
Short-term Debt [Line Items]                          
Warrant term           5 years              
Debt discount to be amortized           $ 322,000              
Convertible Debt [Member]                          
Short-term Debt [Line Items]                          
Debt accrued interest rate           10.00%              
Default interest rate       18.00%                  
Amortization of debt issuance cost                 7,000   38,000    
Original issue discount           10.00%              
Total agreement purchase price           $ 499,950              
Amortization of debt discount and fees           21,000     67,000   343,000    
Convertible Debt [Member] | Senior Secured Convertible Promissory Note [Member]                          
Short-term Debt [Line Items]                          
Debt issuance costs     $ 14,000                    
Debt accrued interest rate     10.00%                    
Default interest rate   18.00%                      
Interest expense                 9,000   10,000    
Amortization of debt issuance cost                 7,000   8,000    
Notes payable                 58,000   58,000    
Original issue discount     10.00%                    
Total agreement purchase price     $ 52,500                    
Debt instrument, convertible, conversion price (in dollars per share) $ 0.02                        
Debt conversion rate 65.00%                        
Debt discount to be amortized                 26,000   26,000    
Amortization of debt discount and fees                 28,000   30,000    
Beneficial conversion feature     50,000                    
Unamortized issuance costs                 6,000   6,000    
Convertible Debt [Member] | Warrant [Member]                          
Short-term Debt [Line Items]                          
Debt issuance costs           53,000              
Amortization of debt discount and fees           $ 30,000              
Accredited Investors [Member] | Term Loan Subscription Agreements [Member]                          
Short-term Debt [Line Items]                          
Secured promissory notes principal amount     $ 5,700,000         $ 5,700,000          
Debt issuance costs               $ 707,000          
Debt accrued interest rate               12.00%          
Extension period for term of loan               60 days          
Default interest rate             15.00%            
Interest expense                 215,000 326,000 986,000 330,000  
Amortization of debt issuance cost                 0 $ 147,000 347,000 $ 148,000  
Notes payable                 5,700,000   5,700,000    
Accrued expenses                 $ 961,000   $ 961,000