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Long-Term Borrowings- Reconciliation of liabilities to cash flows arising from financing activities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
IFRS Statement [Line Items]    
Balance at beginning of year $ 4,220 $ 5,899
Other changes:    
Ending Balance 0 $ 57,339
Long-term borrowings [member]    
IFRS Statement [Line Items]    
Balance at beginning of year 0  
Change from financing activities:    
Proceeds from borrowings 60,000  
Repayments of borrowings (1,500)  
Total changes from financing activities 58,500  
Other changes:    
Effect of exchange rate changes 0  
Total liability-related other changes 0  
Ending Balance $ 58,500