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Debt - Streeterville Note (Details)
$ in Thousands
1 Months Ended
Apr. 27, 2021
USD ($)
creditFacility
Apr. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Debt Instrument [Line Items]      
Purchase price   $ 1,500  
Streeterville Note      
Debt Instrument [Line Items]      
Principal amount $ 1,700    
Issue discount 194    
Purchase price 1,500    
Unamortized debt issuance costs $ 15    
Interest rate 8.00%    
Maximum redemption amount $ 205    
Right to defer mandatory redemption, number of deferrals | creditFacility 3    
Percentage increase due to deferral of redemption option 1.50%    
Total liability, net of discount and financing fees     $ 1,600
Unamortized issuance costs at date of issuance     $ 100
Percentage increase if delisted from Nasdaq 15.00%    
Streeterville Note | Debt Instrument, Redemption, Period One      
Debt Instrument [Line Items]      
Prepayment premium 5.00%    
Debt prepayment limit, percent 50.00%    
Streeterville Note | Debt Instrument, Redemption, Period Two      
Debt Instrument [Line Items]      
Prepayment premium 10.00%