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Other Current Assets (Schedule related to other current assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other Current Assets [abstract]    
Derivative assets $ 1,490  
Prepaid expenses 8,060 $ 2,622
Investments in equity securities (note 11) 416 1,059
Assets held for sale   659
Income tax recoverable 1,713  
Other current assets $ 11,679 $ 4,340