Other liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Miscellaneous current liabilities [abstract]

Disclosure of detailed information about other current liabilities [Table Text Block]

		Dec. 31, 2020		Dec. 31, 2019
Current
Provisions (note 19)	$	33,675	$	33,575
Pension liability (note 20)		13,552		12,015
Other employee benefits (note 21)		3,154		2,806
Unearned revenue		1,590		1,015
	$	51,971	$	49,411