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Cash and Cash Equivalents (Tables)
 12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Cash and Cash Equivalents
 
 
December 31
 
 
2019
 
2020
 
 
NT$
 
NT$
 
US$ (Note 4)
 
 
 
 
 
 
 
Cash on hand
 
$
6,567
 
 
$
6,073
 
 
$
216
 
Checking accounts and demand deposits
 
 
44,565,936
 
 
 
48,734,866
 
 
 
1,735,572
 
Cash equivalents Cash equivalents (time deposits with original maturity of less than three months)
 
 
15,558,372
 
 
 
2,797,132
 
 
 
99,613
 
 
 
$
60,130,875
 
 
$
51,538,071
 
 
$
1,835,401