Statement of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Contributed Surplus	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interest	Warrant Contributed Surplus	Employee Stock Option Contributed Surplus
Balance at Dec. 31, 2009	$ 445,880	$ 690,056		$ 1,340	$ (262,808)	$ 2,525	$ 5,138	$ 9,629
Bakance (shares) at Dec. 31, 2009		257,362,560
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options	2,355	3,537						(1,182)
Shares issued under options (shares)		1,148,675
Options granted net of forfeitures	2,975							2,975
Unrealized gain on available for sale securities	619			619
Net Income (Loss) Attributable to Parent	(11,229)
Net income/(loss)	(14,605)				(11,229)	(3,376)
Issue costs	(106)	(106)
Balance at Dec. 31, 2010	437,118	693,487		1,959	(274,037)	(851)	5,138	11,422
Balance (shares) at Dec. 31, 2010		258,511,235
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options	282	412						(130)
Shares issued under options (shares)		158,251
Options granted net of forfeitures	3,336							3,336
Common shares issued	49							49
Unrealized gain on available for sale securities	19			19
Net Income (Loss) Attributable to Parent	(2,075)
Net income/(loss)	(2,502)				(2,075)	(427)
Balance at Dec. 31, 2011	438,302	693,899		1,978	(276,112)	(1,278)	5,138	14,677
Balance (shares) at Dec. 31, 2011		258,669,486
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under options	(929)	446						(1,375)
Shares issued under options (shares)		181,475
Bonus shares issued	307	307		0	0	0	0	0
Bonus shares issued (shares)		165,009
Options granted net of forfeitures	6,111							6,111
Common shares issued	603							603
Unrealized gain on available for sale securities	(2,694)			(2,694)
Net Income (Loss) Attributable to Parent	(9,490)				(9,490)
Net income/(loss)	(10,215)				(10,215)	(725)
Balance at Dec. 31, 2012	$ 431,485	$ 694,652		$ (716)	$ (285,602)	$ (2,003)	$ 5,138	$ 20,016
Balance (shares) at Dec. 31, 2012		259,015,970