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Earnings (Loss) Per Share - Schedule of Earnings (Loss) Per Share, Basic and Diluted (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Numerator:      
Net income (loss) attributable to Yalla Group Limited's shareholders $ 79,756,797 $ 82,600,678 $ (2,067,723)
Numerator for basic and diluted earnings (loss) per share calculation $ 79,756,797 $ 82,600,678 $ (2,067,723)
Denominator:      
Denominator for basic earnings (loss) per share calculation 153,526,679 148,739,986 91,755,810
Dilutive effect of outstanding share options 23,112,879 31,159,480  
Denominator for diluted earnings (loss) per share calculation 176,639,558 179,899,466 91,755,810
Earnings (loss) per ordinary share      
Basic $ 0.52 $ 0.56 $ (0.02)
Diluted $ 0.45 $ 0.46 $ (0.02)