Stock-based compensation - Summary of Restricted Stock Units (Detail) - Restricted stock units shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Shares (in thousands)
Unvested balance at beginning of period (in shares) | shares	2,415
Granted (in shares) | shares	3,369
Vested (in shares) | shares	(1,057)
Forfeited (in shares) | shares	(520)
Unvested balance at end of period (in shares) | shares	4,207
Weighted-average grant date fair value
Unvested balance at beginning of period (in dollars per share) | $ / shares	$ 11.44
Granted (in dollars per share) | $ / shares	4.76
Vested (in dollars per share) | $ / shares	14.35
Forfeited (in dollars per share) | $ / shares	8.09
Unvested balance at end of period (in dollars per share) | $ / shares	$ 6.08