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Goodwill - Schedule of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
Beginning of the period $ 7,525 $ 0
Arising from acquisition of AMTD Digital   7,509
Disposal of subsidiaries (7,511)  
Exchange realignment (14) 16
End of the period $ 0 $ 7,525