Other financial liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Statements [Line Items]

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

		Dec. 31, 2018		Dec. 31, 2017		Jan. 1, 2017
Current
Derivative liabilities	$	2,634	$	16,140	$	10,682
Warrants at fair value through profit or loss		—		6,961		—
Contingent consideration - gold price option		—		732		—
Other financial liabilities at amortized cost		2,590		2,630		2,813
Embedded derivatives (note 27c)		7,201		297		—
		12,425		26,760		13,495
Non-current
Contingent consideration - gold price option		—		—		570
Warrants at fair value through profit or loss		—		—		7,588
Other financial liabilities at amortized cost		18,771		19,938		20,185
Embedded derivatives (note 27c)		—		863		—
		18,771		20,801		28,343
	$	31,196	$	47,561	$	41,838