XML 165 R142.htm IDEA: XBRL DOCUMENT v3.21.1
Other gains and losses - Summary of Other gains and losses (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2020
TWD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
TWD ($)
Dec. 31, 2018
TWD ($)
Disclosure of Other gains and losses [Abstract]        
Foreign exchange gains (losses), net $ (355,255)   $ (154,993) $ 93,104
Reimbursement of ADSs service charge 2,101   4,292 13,269
Gain on valuation of financial assets at fair value through profit or loss 24,015   1,317 1,485
Others 5,872   970 6,851
Total $ (323,267) $ (11,512) $ (148,414) $ 114,709