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Nature of Business (Details) $ / shares in Units, $ in Thousands						1 Months Ended	3 Months Ended		12 Months Ended	195 Months Ended
	May 02, 2025 USD ($)	Apr. 30, 2025 $ / shares shares	Feb. 18, 2025 USD ($)	Apr. 30, 2024 USD ($) increment	Aug. 10, 2023 shares	Oct. 31, 2023 USD ($)	Mar. 31, 2025 USD ($) $ / shares shares	Mar. 31, 2024 USD ($)	Dec. 31, 2021	Mar. 31, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($)
Nature of Business [Line Items]
Cash, cash equivalents and restricted cash,							$ 13,350	$ 4,320		$ 13,350	$ 8,875	$ 12,127
Accumulated deficit							289,924			289,924	$ 279,549
Issuance of stock								3,141		$ 300
Sale of stock (in shares) | shares					4,015,002
Proceeds from lines of credit			$ 10,000	$ 25,000			$ 10,000	$ 0
Number of debt increments available to be drawn | increment				2
Common stock, par value (in dollars per share) | $ / shares							$ 0.0001			$ 0.0001	$ 0.0001
University Of Texas MD Anderson Cancer Center
Nature of Business [Line Items]
Alliance program, term									5 years
Subsequent Event
Nature of Business [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.0001
Loan Facility | Secured Debt
Nature of Business [Line Items]
Line of credit maximum borrowing capacity				$ 50,000
Proceeds from lines of credit			$ 10,000	25,000
Loan Facility, June 30, 2025 | Secured Debt
Nature of Business [Line Items]
Line of credit maximum borrowing capacity				10,000
Loan Facility, December 31, 2025 | Secured Debt
Nature of Business [Line Items]
Line of credit maximum borrowing capacity				$ 15,000
Standby Equity Purchase Agreement
Nature of Business [Line Items]
Sale of stock, authorized amount						$ 30,000	$ 30,000
Sale of stock (in shares) | shares							0
Private Placement | Subsequent Event
Nature of Business [Line Items]
Sale of stock, shares to be issued in transaction (in shares) | shares		5,500,000
Stock net yet issued, price per share (in dollars per share) | $ / shares		$ 4.00
Proceeds from private placement	$ 22,000

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