Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025	Aug. 31, 2004
Accrued Payments
Collaboration revenue	$ 0	$ 0	$ 0	$ 2,000
Prepaid expenses and other current assets	542,000		542,000		$ 600,000
Other long-term assets	776,000		776,000		887,000
Accounts payable	732,000		732,000		613,000
Periodic payment for agreement settlement	285,000		285,000
The University of Texas MD Anderson Cancer Center and The Texas A & M University System [Member]
Accrued Payments
Milestone maximum payment						$ 4,500,000
Prepaid expenses and other current assets	222,000		222,000
The University of Texas MD Anderson Cancer Center and The Texas A & M University System [Member] | Royalty [Member]
Accrued Payments
Payment under license agreement	0		0	0
The University of Texas MD Anderson Cancer Center [Member]
Accrued Payments
Accounts payable	0		0		$ 143,000
License agreements, outstanding payments	0		0
Collaboration Agreement with Solasia Pharma KK [Member]
Accrued Payments
Collaboration revenue	$ 0	$ 0	$ 0	$ 2,000