Investments and Fair Value Instruments - Summary of Changes in Fair Value and Other Adjustments of Liabilities (Detail) - Level 3 [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 3,257
Change in fair value	(593)
Ending Balance	2,664
March 2023 Options - Series A [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,008
Change in fair value	(459)
Ending Balance	549
March 2023 Options - Series B [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	41
Change in fair value	(40)
Ending Balance	1
March 2023 Placement Agent Options [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	46
Change in fair value	(22)
Ending Balance	24
August 2022 Options [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	159
Change in fair value	(70)
Ending Balance	89
August 2022 Placement Agent Options [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	3
Change in fair value	(2)
Ending Balance	1
Contingent Liabilities [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	2,000
Change in fair value	0
Ending Balance	$ 2,000