XML 198 R176.htm IDEA: XBRL DOCUMENT v3.20.1
Share-based Payments - Additional Information (Detail)
$ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
TWD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
TWD ($)
Dec. 31, 2017
TWD ($)
Disclosure of terms and conditions of share-based payment arrangement [Line Items]        
Compensation expenses $ 822 $ 27 $ 41,043 $ 123,021