Stock-Based Compensation - Summary of Activity for Service-based Stock Options (Details) - Service Based Stock Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
2019 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options and Unvested Shares, beginning balance	4,267,178
Number of Options and Unvested Shares, granted	3,242,000
Number of Options and Unvested Shares, exercised	(149,999)
Number of Options and Unvested Shares, ending balance	7,359,179	4,267,178
Number of Options and Unvested Shares, vested and expected to vest	7,359,179
Number of Options and Unvested Shares, exercisable	1,207,209
Weighted Average Exercise Price, beginning balance	$ 5
Weighted Average Exercise Price, granted	1.31
Weighted Average Exercise Price, exercised	0.94
Weighted Average Exercise Price, exercised, cancelled / forfeited	0
Weighted Average Exercise Price, ending balance	3.45	$ 5
Weighted Average Exercise Price, vested and expected to vest	3.45
Weighted Average Exercise Price, exercisable	$ 13.51
Weighted average remaining contractual life	9 years 1 month 2 days	8 years 10 months 6 days
Weighted average remaining contractual life, vested and expected to vest	9 years 1 month 2 days
Weighted average remaining contractual life, exercisable	7 years 7 days
Aggregate intrinsic value	$ 201	$ 197
Aggregate intrinsic value, exercised	64
Aggregate intrinsic value, vested and expected to vest	201
Aggregate intrinsic value, exercisable	$ 28
2022 Inducement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options and Unvested Shares, beginning balance	2,333,306
Number of Options and Unvested Shares, ending balance	2,333,306	2,333,306
Number of Options and Unvested Shares, vested and expected to vest	2,333,306
Number of Options and Unvested Shares, exercisable	1,069,431
Weighted Average Exercise Price, beginning balance	$ 2.98
Weighted Average Exercise Price, ending balance	2.98	$ 2.98
Weighted Average Exercise Price, vested and expected to vest	2.98
Weighted Average Exercise Price, exercisable	$ 2.98
Weighted average remaining contractual life	8 years 1 month 24 days	8 years 4 months 20 days
Weighted average remaining contractual life, vested and expected to vest	8 years 1 month 24 days
Weighted average remaining contractual life, exercisable	8 years 1 month 24 days
Novosteo
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options and Unvested Shares, beginning balance	310,431
Number of Options and Unvested Shares, exercised	(90,531)
Number of Options and Unvested Shares, ending balance	219,900	310,431
Number of Options and Unvested Shares, vested and expected to vest	219,900
Number of Options and Unvested Shares, exercisable	64,682
Weighted Average Exercise Price, beginning balance	$ 0.55
Weighted Average Exercise Price, exercised	0.55
Weighted Average Exercise Price, ending balance	0.55	$ 0.55
Weighted Average Exercise Price, vested and expected to vest	0.55
Weighted Average Exercise Price, exercisable	$ 0.55
Weighted average remaining contractual life	7 years 11 months 23 days	8 years 2 months 23 days
Weighted average remaining contractual life, vested and expected to vest	7 years 11 months 23 days
Weighted average remaining contractual life, exercisable	7 years 11 months 23 days
Aggregate intrinsic value	$ 112	$ 155
Aggregate intrinsic value, exercised	74
Aggregate intrinsic value, vested and expected to vest	112
Aggregate intrinsic value, exercisable	$ 33