Net loss per share - Computation (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net loss attributable to common stockholders - basic		$ (51,529)	$ (31,545)	$ (10,019)
Net loss attributable to common stockholders - diluted		$ (51,529)	$ (31,545)	$ (10,019)
Denominator:
Weighted-average common stock outstanding, basic (in shares)	[1]	119,647,777	125,342,746	127,161,731
Weighted-average common stock outstanding, diluted (in shares)	[1]	119,647,777	125,342,746	127,161,731
Net loss per share attributable to common stockholders - basic (in usd per share)		$ (0.43)	$ (0.25)	$ (0.08)
Net loss per share attributable to common stockholders - diluted (in usd per share)		$ (0.43)	$ (0.25)	$ (0.08)

[1] Weighted-average shares have been retroactively restated to give effect to the Merger.