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Inventories Related to Real Estate Business (Tables)
12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Summary of Inventories Related to Real Estate Business
 
 
December 31
 
 
2019
 
2020
 
 
NT$
 
NT$
 
US$ (Note 4)
      
Land and buildings held for sale $9,983  $625,791  $22,286 
Construction in progress  9,619,217   11,058,328   393,815 
Land held for construction  1,787,526   1,787,526   63,659 
             
  $11,416,726  $13,471,645  $479,760