XML 205 R182.htm IDEA: XBRL DOCUMENT v3.21.1
Effects on Initial application of IFRS 9 - Additional Information (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2020
TWD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
TWD ($)
Jan. 01, 2019
TWD ($)
Dec. 31, 2018
TWD ($)
Jan. 01, 2018
TWD ($)
Dec. 31, 2017
TWD ($)
Disclosure of initial application of standards or interpretations [line items]              
Contract assets $ 389,016   $ 377,869 $ 299,835      
Retained earnings 5,401,569 $ 192,364 4,651,215        
Deferred tax assets $ 185,691 $ 6,613 $ 194,552   $ 226,716   $ 212,372
Increase (decrease) due to changes in accounting policy required by IFRSs [member]              
Disclosure of initial application of standards or interpretations [line items]              
Contract assets           $ (115)  
Accounts receivable           (1,819)  
Other receivables           (5)  
Other receivables-related parties           (2)  
Retained earnings           (1,940)  
Deferred tax assets           $ 1