Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 77,965,000	$ 25,617,000
Short-Term Investments, Total	0	0
Restricted cash equivalents	647,000	5,647,000
CVR liability	2,900,000	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	76,089,000	24,100,000
Restricted cash equivalents		5,000,000
CVR liability	2,900,000
Assets, Fair Value Disclosure, Total	76,089,000	29,100,000
Convertible notes		38,595,000
Total	2,900,000	38,595,000
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	76,089,000	24,100,000
Restricted cash equivalents		5,000,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	76,089,000	24,100,000
Restricted cash equivalents		5,000,000
Assets, Fair Value Disclosure, Total	76,089,000	29,100,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	76,089,000	24,100,000
Restricted cash equivalents		5,000,000
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
CVR liability	2,900,000
Convertible notes		38,595,000
Total	$ 2,900,000	$ 38,595,000