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Fair Value Measurements - Narrative (Details)				1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 13, 2023 USD ($)	Dec. 06, 2023 USD ($) shares	Nov. 13, 2023 shares	Feb. 11, 2024 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 28, 2024 USD ($)	Jun. 30, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability, transfers, net					$ 0	$ 0
Fair value, measurement with unobservable inputs reconciliation, recurring basis, asset, transfers, net					$ 0	$ 0
Obligation to issue stock (in shares) | shares			148,710.488
2023 Securities Purchase Agreement
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares			149,330.115
Issuance of stock for settlement of liability	$ 14,800,000			$ 35,200,000
SOBI | License
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contract liability							$ 30,000,000	$ 75,000,000
Old Cartesian
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent value right, percentage of milestone payments, royalties and other amounts to be distributed		100.00%			100.00%
Fixed semi annual amount		$ 750,000
Old Cartesian | 2022 Warrants | Contingent Value Right
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares) | shares		30
Dividend yield | Valuation technique, option pricing model
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrants and rights outstanding, measurement input					0
Dividend yield | Valuation technique, option pricing model | 2022 Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrants and rights outstanding, measurement input					0	0

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