Loss per share - Schedule of Antidilutive Securities Excluded from Computation (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	9,681	20,138
Shares upon exercise of warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	7,840	19,303
Restricted stock units - Unvested
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	1,766	739
Restricted stock units - Vested with deferred conversion
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	75	96