Stockholders' Equity - Summary of Stock Option Activity (Detail) - Options to purchase common stock - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Outstanding Options
Beginning balance (in shares)	5,478,010
Exercised (in shares)	(585,760)
Forfeited / canceled (in shares)	(22,224)
Expired (in shares)	(7,363)
Ending balance (in shares)	4,862,663	5,478,010
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 0.17
Exercised (in dollars per share)	0.14
Forfeited / canceled (in dollars per share)	0.14
Expired (in dollars per share)	0.29
Ending balance (in dollars per share)	$ 0.18	$ 0.17
Weighted Average Remaining Contractual Life (in years)
Weighted Average Remaining Contractual Life (in years)	5 years 8 months 26 days	6 years 18 days
Vested and Expected to Vest
Vested and expected to vest (in shares)	4,862,663
Vested and expected to vest, exercisable (in shares)	3,116,514
Weighted average exercise price, vested and expected to vest (in dollars per share)	$ 0.18
Weighted average exercise price, vested and exercisable (in dollars per share)	$ 0.20
Weighted average remaining contractual life, vested and expected to vest (in years)	5 years 8 months 26 days
Label Role Weighted average remaining contractual life, vested and exercisable	5 years 3 months
Aggregate intrinsic value, vested and expected to vest	$ 1,652
Aggregate intrinsic value, vested and exercisable	$ 994