Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Warrants [Member] Additional Paid-in Capital [Member]	Employee Stock Option [Member] Additional Paid-in Capital [Member]
Balance at Dec. 31, 2008	$ 379,150	$ 615,097	$ 1,228	$ (251,381)	$ 1	$ 5,138	$ 9,067
Shares, Balance at Dec. 31, 2008		235,945,311
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options		1,417,250
Shares issued under options, value	2,538	4,008					(1,470)
Options granted net of forfeitures							2,032
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures	2,032
Unrealized gain on available for sale securities	112		112
Common shares issued		20,000,000
Common shares issued, value	75,000	75,000
Noncontrolling interest	2,524				2,524
Issue costs	(4,049)	(4,049)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(8,903)
Net Income	(11,427)			(11,427)
Shares, Balance at Dec. 31, 2009		257,362,561
Balance at Dec. 31, 2009	445,880	690,056	1,340	(262,808)	2,525	5,138	9,629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options		1,148,675
Shares issued under options, value	2,355	3,537					(1,182)
Options granted net of forfeitures							2,975
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures	2,975
Unrealized gain on available for sale securities	619		619
Noncontrolling interest	(3,376)				(3,376)
Issue costs	(106)	(106)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(14,605)
Net Income	(11,229)			(11,229)
Balance at Dec. 31, 2010	437,969
Shares, Balance at Dec. 31, 2010		258,511,236
Balance at Dec. 31, 2010	437,118	693,487	1,959	(274,037)	(851)	5,138	11,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options		158,251
Shares issued under options, value	282	412					(130)
Options granted net of forfeitures							3,336
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures	3,336
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Units, Requisite Service Period Recognition	49						49
Unrealized gain on available for sale securities	19		19
Noncontrolling interest	(427)				(427)
Issue costs	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(2,502)			(2,075)
Net Income	(2,075)
Balance at Dec. 31, 2011	$ 439,580
Shares, Balance at Dec. 31, 2011		258,669,487