CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares
REVENUE:
Revenue	$ 15,640	$ 41,285
COSTS AND EXPENSES:
Gross profit	2,472	14,891
OTHER OPERATING EXPENSES:
Property holding	1,608	1,411
General and administrative	3,871	5,187
Loss from investment in Minera Santa Cruz S.A. (note 5)	2,310	212
Depreciation	152	360
Revision of estimates and accretion of asset reclamation obligations (note 6)	461	294
Total other operating expenses	12,967	19,298
Operating loss	(10,495)	(4,407)
OTHER (EXPENSE) INCOME:
Interest and other expense	(513)	(134)
Gain (loss) on investments (note 2)	827	(2,735)
Foreign currency gain	163	927
Total other income (expense)	477	(1,942)
Loss before income and mining taxes	(10,018)	(6,349)
Income and mining tax (expense) recovery (note 7)	(118)	1,138
Net loss and comprehensive loss	$ (10,136)	$ (5,211)
Net loss per share (note 10):
Basic and Diluted (in dollars per share) | $ / shares	$ (0.03)	$ (0.02)
Weighted average common shares outstanding (thousands) (note 10):
Basic and Diluted (in shares) | shares	338,557	337,062
Shareholders' distribution declared per common share (note 8) | $ / shares		0.005
Gold and silver sales
REVENUE:
Revenue	$ 15,583	$ 41,041
Other revenue
REVENUE:
Revenue	57	244
Production costs applicable to sales
COSTS AND EXPENSES:
Cost of goods and services sold	13,168	26,394
Mine development
COSTS AND EXPENSES:
Cost of goods and services sold	776	380
Exploration
COSTS AND EXPENSES:
Cost of goods and services sold	$ 3,789	$ 11,454