CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDER'S 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, 2011	$ (26,077)	$ 86	$ 145,814	$ (171,977)
Beginning Balance (in shares) at Dec. 31, 2011		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)		5,175,000
Share-based compensation related to stock options	4,217		4,217
Share-based compensation related to restricted stock award, net of forfeitures	1,848	1	1,847
Share-based compensation related to restricted stock award, net of forfeitures (in shares)		1,500,000
Exercise of options granted to employees	1,137	1	1,136
Exercise of options granted to employees (in shares)		1,156,184
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		93,461,341
Beginning Balance at Dec. 31, 2012	(3,357)	93	180,145	(183,595)
Beginning Balance (in shares) at Dec. 31, 2012		93,489,809
Share-based compensation related to stock options	895		895
Share-based compensation related to restricted stock award, net of forfeitures	2,558		2,558
Share-based compensation related to restricted stock award, net of forfeitures (in shares)		(1,667)
Exercise of options granted to employees	103	1	102
Exercise of options granted to employees (in shares)		64,768
Net loss for the period	(16,905)			(16,905)
Ending Balance at Sep. 30, 2013	$ (16,706)	$ 94	$ 183,700	$ (200,500)
Ending Balance (in shares) at Sep. 30, 2013		93,552,910