XML 228 R210.htm IDEA: XBRL DOCUMENT v3.22.1
Related Party Transactions - Additional Information (Detail)
$ in Thousands, $ in Thousands
 1 Months Ended
Dec. 31, 2021
TWD ($)
shares
Dec. 31, 2021
USD ($)
shares
Sep. 30, 2020
TWD ($)
shares
Jul. 31, 2019
TWD ($)
shares
Sep. 30, 2021
TWD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2019
TWD ($)
Associates [member]              
Disclosure of transactions between related parties [line items]              
Real estate properties acquired | $             $ 2,326,000
HC associates [Member]              
Disclosure of transactions between related parties [line items]              
Real estate properties acquired         $ 2,362,000 $ 85,148  
USI Enterprise Limited ("USIE") [member]              
Disclosure of transactions between related parties [line items]              
Repurchase of outstanding ordinary shares | shares | shares 2,271 2,271 2,685 2,805      
Value of ordinary shares purchased $ 1,081,214 $ 38,977 $ 1,520,976 $ 1,247,187