Stock-Based Compensation - Stock Option Activity (Details) - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	14,863,996
Granted (in shares)	1,174,939
Exercised (in shares)	(73,745)
Cancelled or forfeited (in shares)	(41,384)
Outstanding at end of period (in shares)	15,923,806	14,863,996
Options vested and exercisable at end of period (in shares)	12,351,611
Options unvested at ending of period (in shares)	3,572,195
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)	$ 15.07
Granted (in dollars per share)	29.46
Exercised (in dollars per share)	16.05
Cancelled or forfeited (in dollars per share)	18.18
Outstanding at end of period (in dollars per share)	16.12	$ 15.07
Options vested and exercisable at end of period (in dollars per share)	14.14
Options unvested at ending (in dollars per share)	$ 22.94
Weighted-Average Remaining Contractual Term [Abstract]
Outstanding	5 years 2 months 26 days	5 years 1 month 28 days
Granted	9 years 10 months 17 days
Options vested and exercisable	4 years 1 month 20 days
Options unvested	9 years 14 days
Aggregate Intrinsic Value [Abstract]
Outstanding at beginning of period	$ 250,602
Exercised	956
Outstanding at end of period	208,603	$ 250,602
Options vested and exercisable	190,665
Options unvested	$ 17,937