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Long Term Debt and Convertible Notes - CIBC Loan Narrative (Details)
1 Months Ended 12 Months Ended
Feb. 20, 2020
USD ($)
Oct. 31, 2021
Mar. 31, 2021
USD ($)
payment
Apr. 30, 2020
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]            
Payment of fees to lender and third parties         $ 41,000 $ 162,000
Amortization of debt discount and debt issuance costs         106,000 $ 968,000
CIBC Agreement | Medium-term Notes            
Debt Instrument [Line Items]            
Debt instrument, face amount including accordion feature $ 32,000,000          
Trailing period of revenue     3 months      
Debt term 5 years          
Interest payments term 24 months 24 months        
Principal and interest payments term 36 months 36 months        
Interest period extension term 36 months          
Interest-only period, training period of revenue requirement 3 months          
Revenue threshold for interest period extension term option $ 20,000,000   $ 20,000,000      
Fee amount       $ 200,000    
Gain (loss) on amendment of debt instrument     $ 0 $ 0    
Number of periodic payments | payment     36      
Payment of fees to lender and third parties 400,000   $ 100,000      
Increase in loan interest rate   0        
Effective interest rate           4.71%
Cash and cash equivalents trigger for revenue requirement (less than) $ 100,000,000          
Minimum percentage of revenue requirement, trailing period of revenue 3 months          
Minimum percentage of revenue requirement 80.00%          
Unrestricted cash requirement period 4 months          
Amortization of debt discount and debt issuance costs         100,000 $ 100,000
Interest expense         $ 800,000 $ 700,000
CIBC Agreement | Medium-term Notes | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.00%          
CIBC Agreement, Tranche A | Medium-term Notes            
Debt Instrument [Line Items]            
Proceeds from issuance of debt $ 17,000,000          
CIBC Agreement, Tranche B | Medium-term Notes            
Debt Instrument [Line Items]            
Accordion feature on face amount of debt 8,000,000          
Trailing period of revenue       6 months    
Revenue threshold for additional borrowing       $ 15,000,000    
CIBC Agreement, Tranche C | Medium-term Notes            
Debt Instrument [Line Items]            
Accordion feature on face amount of debt $ 7,000,000          
Trailing period of revenue 6 months          
Revenue threshold for additional borrowing $ 20,000,000          
CIBC Agreement, Tranche C | Medium-term Notes | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.50%          
CIBC Agreement, Tranche B Or Tranche C | Medium-term Notes            
Debt Instrument [Line Items]            
Structuring fee percentage       1.00%