CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (CAPITAL DEFICIENCY) (USD $) In Thousands, except Share data		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2010		$ (11,323)	$ 81	$ 124,044	$ (135,448)
Beginning Balance (in shares) at Dec. 31, 2010	[1]		81,248,472
Common stock issued for cash (net of issuance costs)		20,590	4	20,586
Common stock issued for cash (net of issuance costs) (in shares)	[1]		4,000,000
Share-based compensation related to stock options		730		730
Exercise of options granted to employees and non-employees		266	1	265
Exercise of options granted to employees and non-employees (in shares)	[1]		350,045
Net loss for the period		(27,616)			(27,616)
Ending Balance at Sep. 30, 2011		(17,353)	86	145,625	(163,064)
Ending Balance (in shares) at Sep. 30, 2011	[1]		85,598,517
Beginning Balance at Dec. 31, 2011		(26,077)	86	145,814	(171,977)
Beginning Balance (in shares) at Dec. 31, 2011	[1]		85,630,157
Common stock issued for cash (net of issuance costs)		25,388	5	25,383
Common stock issued for cash (net of issuance costs) (in shares)	[1]		5,175,000
Share-based compensation related to stock options		4,217		4,217
Exercise of options granted to employees and non-employees		1,137	1	1,136
Exercise of options granted to employees and non-employees (in shares)	[1]		1,156,184
Share-based compensation related to restricted stock award		1,848	1	1,847
Share-based compensation related to restricted stock award (in shares)	[1]		1,500,000
Net loss for the period		(1,741)			(1,741)
Ending Balance at Sep. 30, 2012		$ 4,772	$ 93	$ 178,397	$ (173,718)
Ending Balance (in shares) at Sep. 30, 2012	[1]		93,461,341

[1] Common Stock, $0.001 par value; Authorized - as of September 30, 2012 and September 30, 2011 - 150,000,000 shares.