v3.26.1
Share capital - Common Shares (Details)
$ in Thousands
 1 Months Ended 3 Months Ended
Mar. 10, 2026
shares
May 09, 2025
shares
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2025
USD ($)
shares
Number of shares          
Exercise of stock options (in shares) | shares       0 6,051
Amount          
Balance at beginning of period       $ 244,605  
Exercise of stock options         $ 213
Issuance of common shares under employee share purchase plan       200 236
Release of restricted share units       0 0
Purchase of common shares held for cancellation       (64,324) $ (9,544)
Balance at end of period     $ 219,229 $ 219,229  
Share capital repurchase amount (in shares) | shares   1,481,659      
Share capital public float percent   5.00%      
Share capital          
Number of shares          
Balance at beginning of period (in shares) | shares       28,747,289 30,255,955
Exercise of stock options (in shares)       0 6,051
Issuance of common shares under employee share purchase plan (in shares) | shares       11,081 6,529
Release of restricted share units (in shares) | shares       31,738 16,994
Purchase of common shares held for cancellation (in shares) | shares (2,941,176)   (153,360) (3,094,536) (307,178)
Balance at end of period (in shares) | shares     25,695,572 25,695,572 29,978,351
Amount          
Balance at beginning of period       $ 244,605  
Exercise of stock options       0 $ 316
Issuance of common shares under employee share purchase plan       226 283
Release of restricted share units       1,090 719
Purchase of common shares held for cancellation       (26,692) $ (2,326)
Balance at end of period     $ 219,229 $ 219,229