CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares
REVENUE:
Gold and silver sales	$ 13,430	$ 13,423	$ 43,373	$ 49,226
Total Revenue	13,430	13,423	43,373	49,226
COSTS AND EXPENSES:
Production costs applicable to sales	8,649	6,409	24,193	21,239
Mine development costs	1,382	934	3,217	2,948
Exploration costs	2,356	2,166	13,886	5,595
Property holding costs	1,979	1,892	3,590	3,297
General and administrative	4,734	3,233	13,105	8,601
Depreciation	316	312	1,125	809
Revision of estimates and accretion of asset reclamation obligations (note 6)	320	125	541	382
Loss (income) from investment in Minera Santa Cruz S.A., net of amortization (note 5)	462	(4,693)	535	(13,789)
Total costs and expenses	20,198	10,378	60,192	29,082
Operating (loss) income	(6,768)	3,045	(16,819)	20,144
OTHER (EXPENSE) INCOME:
Interest and other (expense) income:	(303)	599	(478)	754
Gain on sale of assets		24	11	24
Gain on sale of marketable equity securities (note 2)			840	22
Other-than-temporary impairment on marketable equity securities (note 2)	(356)		(356)	(882)
Unrealized (loss) gain on derivatives (note 2)	(933)	(197)	136	1,522
Foreign currency (loss) gain	(276)	130	799	632
Total other (expense) income	(1,868)	556	952	2,072
(Loss) Income before income taxes	(8,636)	3,601	(15,867)	22,216
Income tax recovery (note 7)	(564)	(607)	(3,067)	(3,330)
Net (loss) income	(8,072)	4,208	(12,800)	25,546
OTHER COMPREHENSIVE (LOSS) INCOME:
Reclassification of unrealized gain on marketable securities disposed of during the period, net of taxes (note 2)			(840)
Other-than-temporary impairment on marketable equity securities (note 2)	356		356	882
Unrealized (loss) gain on available-for-sale securities, net of taxes	(1,573)	290	2,066	1,790
Comprehensive (loss) income	$ (9,289)	$ 4,498	$ (11,218)	$ 28,218
Net (loss) income per share (note 10):
Basic (in dollars per share) | $ / shares	$ (0.03)	$ 0.01	$ (0.04)	$ 0.09
Diluted (in dollars per share) | $ / shares	$ (0.03)	$ 0.01	$ (0.04)	$ 0.09
Weighted average common shares outstanding (thousands) (note 10):
Basic (in shares) | shares	314,077	298,510	307,445	298,330
Diluted (in shares) | shares	314,077	301,045	307,445	299,995
Return of capital distribution declared per common share (note 8) | $ / shares	0.005	0.005	0.010	0.005