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Convertible Bond and Derivative Financial Liability - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 19, 2019 | Jan. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |  |
Convertible debt rate of interest | 2.00% |  |  |
Debt instrument face value | $ 15,000,000 |  |  |
Convertible bond conversion basis |  |  | 99.44 American Depositary Shares (“ADSs”) per US$1,000 principal |
Common Class A [Member] | Convertible Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument conversion price per share |  | $ 8.08 |  |
Debt instrument minimum amount eligible for conversion | $ 10,000,000 |  |  |
Stock issued during the period shares conversion of convertible securities |  | 1,856,436 |  | 1,856,436
Common Class A [Member] | Convertible Debt [Member] | ADR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument conversion price per share | $ 99.44 |  |  |

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