MINERAL PROPERTIES, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2018

Statements Line Items

Disclosure of detailed information about property, plant and equipment [Table Text Block]

		Mineral						Machinery &					Transport &
		properties			Plant			equipment			Building		office equipment			Total
Cost
Balance at December 31, 2016	$	457,401		$	94,871		$	61,812		$	10,671	$	9,595		$	634,350
Additions		28,682			3,177			5,386			1,191		2,038			40,474
Disposals		(233	)		(27	)		(4,354	)		-		(1,100	)		(5,714	)
Balance at December 31, 2017		485,850			98,021			62,844			11,862		10,533			669,110
Additions		30,377			4,480			3,411			482		1,701			40,451
Disposals		-			-			-			-		-			-
Balance at December 31, 2018	$	516,227		$	102,501		$	66,255		$	12,344	$	12,234		$	709,561
Accumulated amortization and impairment
Balance at December 31, 2016	$	419,320		$	85,563		$	46,196		$	9,214	$	7,819		$	568,112
Amortization		12,161			1,672			2,682			188		947			17,650
Disposals		-			(26	)		(4,353	)		-		(1,089	)		(5,468	)
Balance at December 31, 2017		431,481			87,209			44,525			9,402		7,677			580,294
Amortization		34,420			1,289			3,288			272		1,221			40,490
Disposals		-			-			-			-		-			-
Balance at December 31, 2018	$	465,901		$	88,498		$	47,813		$	9,674	$	8,898		$	620,784
Net book value
At December 31, 2017	$	54,369		$	10,812		$	18,319		$	2,460	$	2,856		$	88,816
At December 31, 2018	$	50,326		$	14,003		$	18,442		$	2,670	$	3,336		$	88,777