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Cryptocurrencies - Summary of Carrying Values of Cryptocurrencies (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency | $ 795 | $ 540
Cryptocurrencies [Member] | Bitcoin [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency | 794 | 523
Cryptocurrencies [Member] | Ethereum [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency | $ 1 | 9
Cryptocurrencies [Member] | Litecoin [Member] |  |
Indefinite-Lived Intangible Assets [Line Items] |  |
Cryptocurrency |  | $ 8

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