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Loan payable - Narrative (Details)
$ in Millions, $ in Millions
2 Months Ended 12 Months Ended
Aug. 17, 2021
USD ($)
Aug. 11, 2021
USD ($)
Aug. 11, 2021
CAD ($)
Apr. 07, 2021
USD ($)
Apr. 07, 2021
CAD ($)
Dec. 16, 2020
USD ($)
Dec. 16, 2020
CAD ($)
Nov. 02, 2020
USD ($)
Nov. 02, 2020
CAD ($)
Feb. 10, 2020
USD ($)
Feb. 10, 2020
CAD ($)
Dec. 16, 2019
USD ($)
tranche
Dec. 31, 2022
USD ($)
Dec. 31, 2023
USD ($)
Oct. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Jun. 16, 2021
USD ($)
Feb. 10, 2020
CAD ($)
Dec. 16, 2019
CAD ($)
tranche
Debt Instrument [Line Items]                                      
Repayment of loans payable                         $ 0.0 $ 0.0 $ 0.0 $ 12.5      
BDC Loan                                      
Debt Instrument [Line Items]                                      
Debt instrument, number of tranches | tranche                       3             3
BDC Loan | Secured Debt                                      
Debt Instrument [Line Items]                                      
Debt instrument, face amount                       $ 5.3             $ 7.0
Debt instrument, interest rate, stated percentage                       16.00%             16.00%
Debt instrument, periodic payment, principal           $ 0.1 $ 0.2                        
Debt instrument, periodic payment, balloon payment to be paid                       $ 0.5             $ 0.7
Repayments of secured debt   $ 5.3 $ 6.6                                
Debt instrument, periodic payment, interest   $ 0.7 $ 0.9                                
BDC Loan | Secured Debt | Minimum                                      
Debt Instrument [Line Items]                                      
Debt instrument, interest rate, additional percentage                       3.00%              
BDC Loan | Secured Debt | Maximum                                      
Debt Instrument [Line Items]                                      
Debt instrument, interest rate, additional percentage                       0.00%              
BDC Loan | Secured Debt | First Tranche                                      
Debt Instrument [Line Items]                                      
Proceeds from issuance of secured debt                   $ 2.3 $ 3.0                
Transaction costs                   $ 0.1               $ 0.1  
BDC Loan | Secured Debt | Second Tranche                                      
Debt Instrument [Line Items]                                      
Proceeds from issuance of secured debt               $ 1.5 $ 2.0                    
BDC Loan | Secured Debt | Third Tranche                                      
Debt Instrument [Line Items]                                      
Proceeds from issuance of secured debt       $ 1.6 $ 2.0                            
Promissory Notes | Unsecured Subordinate Debt                                      
Debt Instrument [Line Items]                                      
Debt instrument, face amount                                 $ 7.0    
Debt instrument, interest rate, stated percentage                                 10.00%    
Repayment of loans payable $ 7.1