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Share capital - Reconciliation, additional information (Details)
$ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 07, 2020
USD ($)
shares
Oct. 30, 2020
USD ($)
$ / shares
shares
Oct. 06, 2020
shares
Aug. 27, 2020
USD ($)
shares
Aug. 27, 2020
CAD ($)
shares
Oct. 08, 2019
USD ($)
shares
Oct. 08, 2019
CAD ($)
shares
Oct. 01, 2019
Aug. 14, 2019
USD ($)
shares
Jul. 08, 2019
USD ($)
shares
Jun. 10, 2019
USD ($)
shares
May 24, 2019
USD ($)
shares
May 13, 2019
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Nov. 30, 2020
USD ($)
shares
Aug. 31, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
shares
Feb. 29, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Oct. 30, 2020
$ / shares
Disclosure of classes of share capital [line items]                                            
Number of stock options exercised (in shares) | shares                 6,900 34,800 6,900   386,100 32,052 3,277 90,000 50,000 13,800 2,300 192,431 434,700  
Proceeds from exercise of stock options                 $ 18 $ 28 $ 17   $ 311 $ 68 $ 43 $ 73 $ 40 $ 23 $ 6 $ 244 $ 374  
Number of shares converted (in shares) | shares                       800,000                    
Conversion of promissory note (Note 11)                       $ 6,120                 6,120  
Stock split ratio               100                            
IPO share issuance (in shares) | shares 3,450,000         4,687,500 4,687,500                              
Gross consideration on issuance of shares through IPO $ 165,600         $ 56,261 $ 75,000                              
Share issuance costs 10,685     $ 923   3,847                                
IPO share issuance $ 154,915         $ 52,414                           154,915 $ 52,414  
Bought deal share offering (in shares) | shares       500,000 500,000                                  
Gross proceeds from issuance of shares in bought deal offering       $ 19,029 $ 25,000                                  
Bought deal share offering       $ 18,106                               18,106    
Number of units released (in shares) | shares     5,883                                      
Shares issued in connection with business combinations (Note 4 and 13)                                       $ 1,163    
forMetris                                            
Disclosure of classes of share capital [line items]                                            
Consideration transferred, acquisition-date fair value   $ 6,417                                        
Number of shares issued in acquisition (in shares) | shares   29,024                                        
Shares issued in connection with business combinations (Note 4 and 13)   $ 1,163                                        
Fair value price per share (in cad per share) | (per share)   $ 40.07                                       $ 53.38
DSUs                                            
Disclosure of classes of share capital [line items]                                            
Number of units released (in shares) | shares     5,883                                 5,883