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Investments and Fair Value Instruments - Summary of Changes in Fair Value and Other Adjustments of Assets and Liabilities (Detail) - Level 3 [Member]
$ in Thousands
 3 Months Ended
Mar. 31, 2025
USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance $ 4,981
Change in fair value (2,862)
Ending Balance 2,119
March 2023 Options - Series A [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 2,285
Change in fair value (1,562)
Ending Balance 723
March 2023 Placement Agent Options [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 90
Change in fair value (59)
Ending Balance 31
August 2022 Options [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 349
Change in fair value (236)
Ending Balance 113
August 2022 Placement Agent Options [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 7
Change in fair value (5)
Ending Balance 2
Note Receivable Bifurcated Derivatives [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 250
Change in fair value 0
Ending Balance 250
Contingent Liabilities [Member]  
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]  
Beginning Balance 2,000
Change in fair value (1,000)
Ending Balance $ 1,000