CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (DEFICIT) (USD $)	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive income (loss)	Noncontrolling Interest
Balance at Dec. 31, 2009	$ 18,558,000	$ 32,000	$ 37,854,000	$ (20,276,000)	$ 154,000	$ 794,000
Balance (in shares) at Dec. 31, 2009		3,238,615
Increase (Decrease) in Stockholders' Equity
Purchase of El Quevar noncontrolling interest	(19,000)	4,000	771,000			(794,000)
Purchase of El Quevar noncontrolling interest (in shares)		400,000
Public offerings, net	108,836,000	83,000	108,753,000
Public offerings, net (in shares)		8,315,484
Stock compensation accrued	3,281,000	3,000	3,278,000
Stock compensation accrued (in shares)		255,750
Treasury shares acquired and retired	(197,000)		(197,000)
Treasury shares acquired and retired (in shares)		(25,072)
Private placements stock units, net (Note 15)	34,622,000	30,000	34,592,000
Private placements stock units, net (Note 15) (in shares)		2,939,790
Unrealized gain (loss) on marketable equity securities, net of tax	11,000				11,000
Net loss	(33,274,000)			(33,274,000)
Balance at Dec. 31, 2010	131,818,000	152,000	185,051,000	(53,550,000)	165,000
Balance (in shares) at Dec. 31, 2010		15,124,567
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued	5,540,000		5,540,000
Stock compensation accrued (in shares)		331,166
Treasury shares acquired and retired	(1,834,000)		(1,834,000)
Treasury shares acquired and retired (in shares)		(106,056)
Warrants exercised		1,000	(1,000)
Warrants exercised (in shares)		104,889
Shares issued to ECU shareholder's and officers	224,675,000	161,000	224,514,000
Shares issued to ECU shareholder's and officers (in shares)		16,117,319
ECU replacement options and warrants	9,853,000		9,853,000
Private placements stock units, net (Note 15)	30,674,000	41,000	30,633,000
Private placements stock units, net (Note 15) (in shares)		4,118,150
Unrealized gain (loss) on marketable equity securities, net of tax	(287,000)				(287,000)
Net loss	(62,671,000)			(62,671,000)
Balance at Dec. 31, 2011	337,768,000	355,000	453,756,000	(116,221,000)	(122,000)
Balance (in shares) at Dec. 31, 2011		35,690,035
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued	2,589,000	9,000	2,580,000
Stock compensation accrued (in shares)		712,500
Registered offering stock units, net (Note 15)	29,433,000	55,000	29,378,000
Registered offering stock units, net (Note 15) (in shares)		5,497,504
Private placements stock units, net (Note 15)	7,475,000	14,000	7,461,000
Private placements stock units, net (Note 15) (in shares)		1,365,794
Unrealized gain (loss) on marketable equity securities, net of tax	32,000				32,000
Net loss	(92,025,000)			(92,025,000)
Balance at Dec. 31, 2012	$ 285,272,000	$ 433,000	$ 493,175,000	$ (208,246,000)	$ (90,000)
Balance (in shares) at Dec. 31, 2012		43,265,833