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Related Party Transactions (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Gold Group Management Inc [member]    
Disclosure of transactions between related parties [line items]    
Amounts payable, related party transactions   $ 9
Gold Group Management Inc and Mill Street Services Ltd [member]    
Disclosure of transactions between related parties [line items]    
Purchase of goods and service related party transactions $ 5 $ 157