Other financial assets (Tables)

12 Months Ended

Dec. 31, 2019

Other Financial Assets [Abstract]

Disclosure of detailed information about other financial assets [Table Text Block]

		Dec. 31, 2019		Dec. 31, 2018
Current
Derivative assets	$	1,712	$	6,628
Restricted cash		337		3,738
		2,049		10,366
Non-current
Investments at fair value through profit or loss		11,287		15,159
	$	13,336	$	25,525