Commitments and Contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2021 USD ($) ft²	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2019 USD ($) shares	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2021 USD ($) ft²	Dec. 31, 2019 USD ($)	Jul. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2019 USD ($)
Commitment And Contingencies [Line Items]
Lease expiration date							Dec. 31, 2031
Operating lease liability, current		$ 1,351			$ 1,351					$ 538
Research and development expenses		13,411	$ 8,017		23,252	$ 15,927
Executive insurance reserve		5,000			5,000
License Agreement With The University Of Colorado [Member]
Commitment And Contingencies [Line Items]
Development and sales milestone payment payable		2,200			$ 2,200
Percentage of sublicense fees					15.00%
Period of obligation to pay royalties					20 years
Research and development expenses		$ 0	$ 0		$ 0	$ 0
License Agreement With Bristol Mayers Equib Company [Member]
Commitment And Contingencies [Line Items]
Percentage of sublicense fees				60.00%
Period of obligation to pay royalties				12 years
Upfront payment made				$ 8,000
Commercial milestone payment payable				$ 215,000				$ 215,000
Royalty as a percentage of sales				10.00%
In process research and development expense recognized								14,600
Development Milestone Payment Payable									$ 4,000
License Agreement With Bristol Mayers Equib Company [Member] | Cash Consideration [Member]
Commitment And Contingencies [Line Items]
In process research and development expense recognized								8,000
License Agreement With Bristol Mayers Equib Company [Member] | Temporary Equity [Member]
Commitment And Contingencies [Line Items]
In process research and development expense recognized								$ 6,600
License Agreement With Bristol Mayers Equib Company [Member] | Maximum [Member] | Tranche Three [Member]
Commitment And Contingencies [Line Items]
Development and sales milestone payment payable												$ 49,000
License Agreement With Bristol Mayers Equib Company [Member] | Minimum [Member] | Tranche Three [Member]
Commitment And Contingencies [Line Items]
Development and sales milestone payment payable												$ 32,000
License Agreement With Bristol Mayers Equib Company [Member] | Series A Redeemable Preferred Stock [Member]
Commitment And Contingencies [Line Items]
Stock issued during period shares purchase of assets | shares				6,628,788
Waltham Massauchets [Member]
Commitment And Contingencies [Line Items]
Office space leased | ft²	15,000						15,000
Lessee, operating lease, lease not yet commenced, renewal term	5 years						5 years
Sublease aggregate base rent obligation	$ 970						$ 970
Percentage increase in initial annual base rent per square foot.	3.00%
Annual Rent Operating lease Aggregate After Increase	$ 11,100
Security deposit											$ 647
Operating lease weighted average remaining lease term		7 years 6 months			7 years 6 months
Operating lease weighted average discount rate		7.50%			7.50%
Future minimum lease payment due under this sublease		$ 1,000			$ 1,000
Operating lease liability, current		$ 800			$ 800
Waltham Massauchets [Member] | Restricted Cash And Cash Equivalents Non Current [Member]
Commitment And Contingencies [Line Items]
Lessee tenant improvement allowance											$ 400