Income or loss per share (Details) - shares	3 Months Ended		6 Months Ended
Income or loss per share (Details) - shares	Jun. 30, 2026	May 25, 2025	Jun. 30, 2026	May 25, 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of securities excluded from computation of earnings per share (in shares)	12,953,259	12,416,117	12,953,259	12,416,117
Redeemable Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of securities excluded from computation of earnings per share (in shares)	7,681,847	7,091,531	7,681,847	7,091,531
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of securities excluded from computation of earnings per share (in shares)	1,293,036	1,260,299	1,293,036	1,260,299
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of securities excluded from computation of earnings per share (in shares)	1,695,376	1,519,287	1,695,376	1,519,287
PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of securities excluded from computation of earnings per share (in shares)	2,283,000	2,545,000	2,283,000	2,545,000