REVENUE (Tables)

12 Months Ended

Dec. 31, 2018

Revenue [abstract]

Disclosure of disaggregation of revenue from contracts with customers [Table text block]

		Year Ended
		December 31,		December 31,
Revenue by product		2018		2017
Concentrate sales	$	111,052	$	105,203
Provisional pricing adjustments		228		1,925
Total revenue from concentrate sales		111,280		107,128
Dore sales		39,229		43,371
Total revenue	$	150,509	$	150,499