Other liabilities

12 Months Ended

Dec. 31, 2017

Statement [Line Items]

Other liabilities [text block]

13. Other liabilities

		Dec. 31, 2017		Dec. 31, 2016
Current
Provisions (note 18)	$	27,370	$	14,367
Pension liability (note 19)		19,401		24,635
Other employee benefits (note 20)		2,756		2,356
Unearned revenue		2,435		849
	$	51,962	$	42,207