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Debt - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Jul. 01, 2021
Feb. 11, 2021
Mar. 18, 2020
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 17, 2020
Debt Instrument [Line Items]                  
Common shares issued for extinguishment of debt (in shares)       877,192 893,921        
Common stock, par value (in usd per share)       $ 0.001   $ 0.001 $ 0.001 $ 0.001  
March 2020 Note Purchase Agreement and Promissory Note                  
Debt Instrument [Line Items]                  
Debt instrument, term     12 months            
Debt instrument, redemption term     6 months            
March 2020 Note Purchase Agreement and Promissory Note                  
Debt Instrument [Line Items]                  
Debt instrument, interest rate, stated percentage     10.00%           5.00%
Note principal and interest exchanged for common shares     $ 6,465,000            
Original issue discount     1,450,000            
Debt discount     15,000            
Aggregate purchase price     $ 5,000,000            
Payment to be made in proportion to outstanding balance, percentage     1.15            
Default interest rate     22.00%            
Debt instrument redemption price percent     33.33%            
Exchange Agreement                  
Debt Instrument [Line Items]                  
Aggregate principal amount of note $ 1,000,000.0 $ 1,500,000              
Notes reduction   $ 1,500,000              
Common shares issued for extinguishment of debt (in shares) 877,192 893,921              
Common stock, par value (in usd per share) $ 1.14 $ 1.678              
Loss on exchange of debt for equity           $ 30,000