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Share Based Compensation (Details) - shares		9 Months Ended
Share Based Compensation (Details) - shares	Jan. 01, 2024	Sep. 30, 2024	Dec. 31, 2023
Restricted stock units
Share-based compensation
RSUs Granted		937,767
Share options \| Class A ordinary shares
Share-based compensation
Shares outstanding (in shares)		11,628,675	11,599,089
Number of options granted		1,688,275
2018 Plan
Share-based compensation
Number of common shares available for future grant		5,086,871
2018 Plan \| Class A ordinary shares \| Maximum
Share-based compensation
Additional shares authorized	2,818,425
2015 Plan \| Class A ordinary shares
Share-based compensation
Shares outstanding (in shares)		1,558,781
2018 ESPP \| Class A ordinary shares
Share-based compensation
Number of common shares available for future grant		671,515
2018 ESPP \| Class A ordinary shares \| Maximum
Share-based compensation
Additional shares authorized	215,000