Other liabilities

12 Months Ended

Dec. 31, 2018

Statements [Line Items]

Other liabilities [text block]

14. Other liabilities

		Dec. 31, 2018		Dec. 31, 2017		Jan. 1, 2017
Current
Provisions (note 19)	$	14,276	$	27,370	$	14,367
Pension liability (note 20)		11,854		19,401		24,635
Other employee benefits (note 21)		2,564		2,756		2,356
Unearned revenue		1,857		2,435		849
	$	30,551	$	51,962	$	42,207