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Notes Payable, Outstanding Notes Payable (Details)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
Feb. 20, 2021
Senior Secured Promissory Notes Payable [Abstract]      
Long-term debt gross $ 24,837 $ 21,060  
Long-term debt gross, current (23,895) (20,917)  
Long-term debt gross, noncurrent 942 143  
Remaining debt discount (5,617) (4,324)  
Senior secured promissory note payable, in default 11,358 10,676  
Remaining debt discount, current 5,617 4,324  
Remaining debt discount, noncurrent 0 0  
Remaining embedded conversion option 4,955    
Remaining embedded conversion option, current (4,955)    
Remaining embedded conversion option, noncurrent 0    
Convertible promissory note payable, in default 9,690 4,000  
Advances on future cash receipts 498 0  
Debt, Long-term and Short-term, Combined Amount [Abstract]      
Long-term debt net 24,175 16,736  
Long-term debt net, current (23,233) (16,593)  
Long-term debt net, noncurrent 942 143  
Convertible Notes Payable [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Principal amount 1,596 1,596  
Remaining debt discount 0 0  
Remaining embedded conversion option 0    
Convertible promissory notes payable, related parties, in default $ 1,596 $ 1,596  
Convertible Notes Payable [Member] | Health Tronics [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 12.00% 12.00%  
Incremental default interest 2.00% 2.00%  
Conversion price (in dollars per share) | $ / shares $ 0.10 $ 0.10  
Principal amount $ 1,372 $ 1,372  
Remaining debt discount 0 0  
Remaining embedded conversion option 0    
Convertible promissory notes payable, related parties, in default $ 1,372 $ 1,372  
Convertible Notes Payable [Member] | A. Michael Stolarski [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 12.00% 12.00%  
Incremental default interest 2.00% 2.00%  
Conversion price (in dollars per share) | $ / shares $ 0.10 $ 0.10  
Principal amount $ 224 $ 224  
Remaining debt discount 0 0  
Remaining embedded conversion option 0    
Convertible promissory notes payable, related parties, in default $ 224 $ 224  
SBA Loan #1 [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date   May 28, 2022  
Stated interest rate   1.00%  
Principal amount   $ 464  
Remaining debt discount   0  
SBA loans   $ 464  
SBA Loan #2 [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date Feb. 20, 2026    
Stated interest rate 1.00%   1.00%
Principal amount $ 1,033    
Remaining debt discount 0    
Remaining embedded conversion option 0    
SBA loans $ 1,033    
Advances on Future Cash Receipts [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date Mar. 11, 2022    
Principal amount $ 763    
Remaining debt discount (265)    
Remaining embedded conversion option 0    
Advances on future cash receipts 498    
Convertible Debt Issued September 3 2022 [Member] | Leviston Notes [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Remaining debt discount (251)    
Remaining embedded conversion option 563    
Convertible promissory note payable, in default $ 584    
Senior Secured Note [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 12.25% 12.25%  
Incremental payment in kind interest 0.0300 0.0300  
Incremental default interest 5.00% 5.00%  
Principal amount $ 15,000 $ 15,000  
Remaining debt discount (3,642) (4,324)  
Senior secured promissory note payable, in default 11,358 $ 10,676  
Remaining embedded conversion option 0    
Convertible Debt [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Principal amount 6,445    
Remaining debt discount (1,710)    
Remaining embedded conversion option 4,955    
Convertible promissory note payable, in default $ 9,690    
Convertible Debt [Member] | Seller Note [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 12.00% 12.00%  
Incremental default interest 5.00% 5.00%  
Conversion price (in dollars per share) | $ / shares $ 0.10 $ 0.10  
Principal amount $ 4,000 $ 4,000  
Remaining debt discount 0 0  
Remaining embedded conversion option 0    
Convertible promissory note payable, in default $ 4,000 $ 4,000  
Convertible Debt [Member] | Convertible Debt Issued April 20 2021 Member | Leviston Notes [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 5.00%    
Incremental default interest 10.00%    
Conversion price (in dollars per share) | $ / shares $ 0.0724    
Principal amount $ 815    
Remaining debt discount (452)    
Remaining embedded conversion option 1,748    
Convertible promissory note payable, in default $ 2,111    
Convertible Debt [Member] | Convertible Debt Issued May 14 2021 [Member] | Leviston Notes [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 5.00%    
Incremental default interest 10.00%    
Conversion price (in dollars per share) | $ / shares $ 0.0724    
Principal amount $ 815    
Remaining debt discount (506)    
Remaining embedded conversion option 1,732    
Convertible promissory note payable, in default $ 2,041    
Convertible Debt [Member] | Convertible Debt Issued September 3 2022 [Member] | Leviston Notes [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 5.00%    
Incremental default interest 10.00%    
Conversion price (in dollars per share) | $ / shares $ 0.0724    
Principal amount $ 272    
Convertible Debt [Member] | Convertible Debt Issued September 3 2021 [Member] | Five Institutions' Notes [Member]      
Senior Secured Promissory Notes Payable [Abstract]      
Maturity date In default    
Stated interest rate 5.00%    
Incremental default interest 10.00%    
Conversion price (in dollars per share) | $ / shares $ 0.0724    
Principal amount $ 543    
Remaining debt discount (501)    
Remaining embedded conversion option 912    
Convertible promissory note payable, in default $ 954