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Cryptocurrencies - Summary of Additional Information about the Cost Basis and Fair Value of Cryptocurrencies (Detail) $ in Thousands | Sep. 30, 2025 USD ($) Unit | Dec. 31, 2024 USD ($)
--- | --- | ---
Bitcoin [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency, Fair Value | $ 11,400 |
Cryptocurrencies [Member] | Bitcoin [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency, Units | Unit | 100.35 |
Cryptocurrency, Cost Basis | $ 9,095 |
Cryptocurrency, Fair Value | $ 11,439 |
Cryptocurrency |  | $ 561
Cryptocurrencies [Member] | Ethereum [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency, Units | Unit | 19.23 |
Cryptocurrency, Cost Basis | $ 1,966 |
Cryptocurrency, Fair Value | $ 2,195 |
Cryptocurrency |  | $ 949

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