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Income Tax - Summary of Current Tax Assets and Liabilities (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
TWD ($)
Current tax assets      
Tax refund receivable $ 207,272 $ 7,472 $ 303,265
Prepaid income tax 334,908 12,073 399,555
Current tax assets 542,180 19,545 702,820
Current tax liabilities      
Income tax payable $ 16,362,350 $ 589,847 $ 6,514,502