Net Loss Per Share - Outstanding Shares of Potentially Dilutive Securities (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	11,894	75,032
Options to purchase ordinary shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total	11,894	7,329
Redeemable convertible preferred shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total		67,018
Ordinary share warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total		112
Unvested restricted ordinary share awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total		573