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

12 Months Ended

Dec. 31, 2017

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, 2017		$		176,503	$		112,385	$		84,190	$		373,078
Expenditures				13,444			9,190			16,995			39,629
Change in reclamation obligation	12			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

	Note		Mineral properties(1)				Plant and equipment (2)				Exploration and evaluation				Total
Cost
At January 1, 2016		$		176,089		$		104,361		$		108,253		$		388,703
Expenditures				1,303				8,024				5,839				15,166
Caballo Blanco Property sale	5		-				-					(29,902	)			(29,902	)
Change in reclamation obligation	12			(889	)		-				-					(889	)
At December 31, 2016				176,503				112,385				84,190				373,078
Accumulated depreciation, depletion and   impairment
At January 1, 2016				166,166				93,157				8,678				268,001
Depreciation and depletion				10,201				4,274			-					14,475
Impairment of exploration and evaluation	5		-				-					12,737				12,737
Caballo Blanco Property sale	5		-				-					(12,737	)			(12,737	)
Impairment reversal of mineral properties, plant and   equipment	6			(18,511	)			(5,188	)		-					(23,699	)
At December 31, 2016				157,856				92,243				8,678				258,777
Carrying amount at December 31, 2016		$		18,647		$		20,142		$		75,512		$		114,301

⁽¹⁾ At December 31, 2017, mineral properties included deferred stripping costs with a carrying value of $9,582 (December 31, 2016 - $nil).

⁽²⁾ Plant and equipment includes construction-in-progress assets of $14,727 (December 31, 2016 - $13,590).

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, 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

		Mineral properties			Plant and equipment			Exploration and evaluation			Total
At December 31, 2016
San Francisco Mine	$		18,647	$		7,730	$		496	$		26,873
Ana Paula Project			-			12,412			75,016			87,428
	$		18,647	$		20,142	$		75,512	$		114,301