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Long-Term Borrowings - (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
IFRS Statement [Line Items]    
Unsecured borrowings $ 0 $ 57,339
Less: current portion 6,000 0
Total 52,500 $ 0
Long-term borrowings [member]    
IFRS Statement [Line Items]    
Unsecured borrowings 58,500  
Less: current portion (6,000)  
Total 52,500  
Unused long-term credit lines $ 40,000  
Long-term borrowings [member] | Bottom of range [member]    
IFRS Statement [Line Items]    
Interest rate 0.68819%  
Long-term borrowings [member] | Top of range [member]    
IFRS Statement [Line Items]    
Interest rate 0.92112%