Mineral Properties, Plant and Equipment, Exploration and Evaluation (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Mineral Properties Plant And Equipment Exploration And Evaluation [Abstract]

Schedule of Reconciliation of Changes in Mineral Properties, Plant and Equipment, Exploration and Evaluation

	Note		Mineral properties ⁽¹⁾			Plant and equipment ⁽²⁾			Exploration and evaluation			Total
Cost
At January 1, 2018		$		190,670	$		121,575	$		101,185	$		413,430
Expenditures				8,850			4,658			15,442			28,950
Rye Patch acquisition	5			40,716			30,697			-			71,413
Change in reclamation obligation ⁽³⁾	17			2,426			-			-			2,426
At December 31, 2018				242,662			156,930			116,627			516,219
Accumulated depreciation, depletion and impairment
At January 1, 2018				162,035			93,593			8,678			264,306
Depreciation and depletion				9,291			5,310			-			14,601
Impairment ⁽⁴⁾				-			8,963			-			8,963
At December 31, 2018				171,326			107,866			8,678			287,870
Carrying amount at December 31, 2018		$		71,336	$		49,064	$		107,949	$		228,349

	Note		Mineral properties ⁽¹⁾			Plant and equipment ⁽²⁾			Exploration and evaluation			Total
Cost
At January 1, 2017		$		176,503	$		112,385	$		84,190	$		373,078
Expenditures				13,444			9,190			16,995			39,629
Change in reclamation obligation	17			723			-			-			723
At December 31, 2017				190,670			121,575			101,185			413,430
Accumulated depreciation, depletion and impairment
At January 1, 2017				157,856			92,243			8,678			258,777
Depreciation and depletion				4,179			1,350			-			5,529
At December 31, 2017				162,035			93,593			8,678			264,306
Carrying amount at December 31, 2017		$		28,635	$		27,982	$		92,507	$		149,124

⁽¹⁾

At December 31, 2018, mineral properties included deferred stripping costs with a carrying value of $13,229 (December 31, 2017 - $9,582).

⁽²⁾

Plant and equipment includes construction-in-progress assets of $1,958 (December 31, 2017 - $14,727).

⁽³⁾

The change in reclamation obligation primarily relates to the revaluation of the Florida Canyon provision for site reclamation and closure from $30,227 to $33,316 using an average US dollar risk free discount rate of 2.93% subsequent to the acquisition of Rye Patch.

⁽⁴⁾

The El Sauzal Plant had a carrying value of $13,963. During the period, the Company obtained third party estimates indicating the El Sauzal Plant fair value was $5,000. As a result, the Company impaired the asset by $8,963.

Schedule of Carrying Amount of Mineral Properties, Plant and Equipment Exploration and Evaluation by Segment

a)	Carrying amount by segment

		Mineral properties			Plant and equipment			Exploration and evaluation			Total
At December 31, 2018
San Francisco Mine	$		29,560	$		13,024	$		1,634	$		44,218
Florida Canyon Mine			41,776			29,472			-			71,248
Ana Paula Project			-			6,452			106,164			112,616
Other			-			116			151			267
	$		71,336	$		49,064	$		107,949	$		228,349

		Mineral properties			Plant and equipment			Exploration and evaluation			Total
At December 31, 2017
San Francisco Mine	$		28,635	$		13,791	$		1,043	$		43,469
Ana Paula Project			-			14,041			91,464			105,505
Other			-			150			-			150
	$		28,635	$		27,982	$		92,507	$		149,124