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Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Assets
Marketable securities		$ 97
Investments	$ 41,846	40,473
Total assets	41,846	40,570
Liabilities
Earnout liabilities	3,651	996
Total liabilities	17,240	2,928
Public Warrants [Member]
Liabilities
Warrant Liability	6,884	1,016
Private Placement Warrants [Member]
Liabilities
Warrant Liability	6,705	916
Level 1
Assets
Marketable securities		97
Total assets	0	97
Liabilities
Total liabilities	6,884	1,016
Level 1 | Public Warrants [Member]
Liabilities
Warrant Liability	6,884	1,016
Level 2
Assets
Investments	41,846	40,473
Total assets	41,846	40,473
Level 3
Liabilities
Earnout liabilities	3,651	996
Total liabilities	10,356	1,912
Level 3 | Private Placement Warrants [Member]
Liabilities
Warrant Liability	$ 6,705	$ 916

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