CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Revenue:
Sale of metals (Note 16)	$ 7,063				$ 18,384
Costs and expenses:
Costs applicable to sale of metals (exclusive of depreciation shown below) (Note 16)	(8,573)		(965)		(23,103)		(965)
Exploration expense	(1,207)		(4,639)		(5,419)		(12,645)
El Quevar project expense	(985)		(5,520)		(3,574)		(23,276)
Velardena project expense	(767)				(6,291)
Administrative expense	(1,934)		(1,836)		(5,787)		(6,242)
Severance and acquisition related cost			(5,353)				(7,050)
Stock based compensation	(308)		(3,260)		(831)		(5,328)
Reclamation and accretion expense	(40)		(31)		(185)		(126)
Goodwill Impairment (Note 9)	(57,213)				(57,213)
Other operating income & (expenses), net	264		(76)		479		340
Depreciation, depletion and amortization	(2,774)		(717)		(6,617)		(1,580)
Total costs and expenses	(73,537)		(22,397)		(108,541)		(56,872)
Loss from operations	(66,474)		(22,397)		(90,157)		(56,872)
Other income and expenses:
Interest and other income	162		11,099		2,323		11,240
Royalty income	14		155		371		285
Interest expense			(337)				(337)
Gain (loss) on foreign currency	368		(1,432)		802		(1,646)
Total other income and expenses	544		9,485		3,496		9,542
Loss from operations before income taxes	(65,930)		(12,912)		(86,661)		(47,330)
Income tax benefit	2,614		1,168		5,574		1,070
Net loss	(63,316)		(11,744)		(81,087)		(46,260)
Comprehensive loss:
Unrealized gain (loss) on securities	166		251		107		(309)
Comprehensive loss	$ (63,150)		$ (11,493)		$ (80,980)		$ (46,569)
Net loss per common share - basic and diluted
Loss (in dollars per share)	$ (1.74)		$ (0.59)		$ (2.27)		$ (2.79)
Weighted average common stock outstanding - basic (in shares)	36,318,747	[1]	19,989,334	[1]	35,762,251	[1]	16,605,896	[1]
Weighted average common stock outstanding - diluted (in shares)	36,318,747	[1]	19,989,334	[1]	35,762,251	[1]	16,605,896	[1]

[1] Potentially dilutive shares have not been included because to do so would be anti-dilutive.