Investments and Fair Value Instruments - Summary of Changes in Fair Value and Other Adjustments of Assets and Liabilities (Detail) - Level 3 [Member] $ in Thousands	9 Months Ended
Sep. 30, 2025 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 4,981
Change in fair value	(4,125)
Ending Balance	856
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	(1,570)
Ending Balance	715
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	(60)
Ending Balance	30
August 2022 Options [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	349
Change in fair value	(239)
Ending Balance	110
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	(6)
Ending Balance	1
Note Receivable Bifurcated Derivatives [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	250
Change in fair value	(250)
Ending Balance	0
Contingent Liabilities [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	2,000
Change in fair value	(2,000)
Ending Balance	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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