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Financial Assets at Fair Value Through Profit or Loss and Stock Loan - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Jun. 01, 2022 | Dec. 31, 2021 | Dec. 28, 2021
AMTD Assets Alpha Group [Member] |  |  |  |  |
Financial Assets At Fair Value Through Profit Or Loss And Stock Loan [Line Items] |  |  |  |  |
Business combination consideration transferred including equity interest held in acquiree prior to combination | $ 276,000 |  |  |  |
Business combination percentage of voting interests acquired | 80.10% |  |  |  |
Business combination consideration transferred | $ 266,000 |  |  |  |
Fair Value of Listed Equity Shares [Member] |  |  |  |  |
Financial Assets At Fair Value Through Profit Or Loss And Stock Loan [Line Items] |  |  |  |  |
Embedded derivative asset at fair value | 13,317 | $ 21,748 |  | $ 27,104 |
Fair Value through Profit or Loss [Member] |  |  |  |  |
Financial Assets At Fair Value Through Profit Or Loss And Stock Loan [Line Items] |  |  |  |  |
Unrealized gain losses on loans receivable | $ 8,371 | $ 8,976 |  | $ 6,095 |
Related Party [Member] | Investment A Stock Loan [Member] |  |  |  |  |
Financial Assets At Fair Value Through Profit Or Loss And Stock Loan [Line Items] |  |  |  |  |
Loans receivable stated interest rate percentage |  |  |  |  | 2.00%
Non-Related Party [Member] | Investment A Stock Loan [Member] |  |  |  |  |
Financial Assets At Fair Value Through Profit Or Loss And Stock Loan [Line Items] |  |  |  |  |
Loans receivable stated interest rate percentage |  |  | 2.00% |  |

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