v3.26.3
Stock-based compensation - Narrative (Details)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2026
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Stock options granted (in shares) 730,270
Stock options granted, weighted average exercise price (in dollars per share) | $ / shares $ 3.80
Stock options granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 2.99
Stock Options  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Options outstanding (in shares) 10,534,850
Unrecognized compensation costs | $ $ 8.4
Expected to be recognized over a weighted average period 1 year 8 months 12 days
Performance-Accelerated Restricted Stock Units  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Unrecognized compensation costs | $ $ 2.0
Expected to be recognized over a weighted average period 2 years 4 months 24 days
Number of shares authorized (in shares) 1,588,140
Units vested (in shares) 0
Share-based compensation, number of common stock issuable per RSU vested (in shares) 1
Shares outstanding (in shares) 1,314,780
Restricted stock units  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Unrecognized compensation costs | $ $ 7.9
Expected to be recognized over a weighted average period 2 years 2 months 12 days
Units vested (in shares) 734,256
Granted (in shares) 2,829,710
Share-based compensation, number of common stock issuable per RSU vested (in shares) 1
Number of shares retained to cover statutory minimum withholding taxes (in shares) 115,928
Shares outstanding (in shares) 3,819,825
Non-Qualified Stock Options  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Stock options granted (in shares) 582,200
Stock options granted, weighted average exercise price (in dollars per share) | $ / shares $ 2.81
Stock options granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 2.25
Options outstanding (in shares) 1,002,200
Unrecognized compensation costs | $ $ 1.3
Expected to be recognized over a weighted average period 3 years 3 months 18 days