CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL DEFICIENCY (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Beginning Balance			$ (26,946)		$ (3,357)
Share-based compensation related to stock options			161		895
Share-based compensation related to restricted stock award, net of forfeitures of 1,834 shares			522		2,558
Exercise of options granted to employees (includes net exercise)			43		103
Net loss for the period	(8,010)	(5,747)	(21,474)		(16,905)
Ending Balance	(47,694)	(16,706)	(47,694)		(16,706)
Common Stock [Member]
Beginning Balance			94		93
Beginning Balance (in shares)			93,551,098		93,489,809
Share-based compensation related to stock options
Share-based compensation related to restricted stock award, net of forfeitures of 1,834 shares
Share-based compensation related to restricted stock award, net of forfeitures of 1,834 shares (in shares)			(1,834)		(1,667)
Exercise of options granted to employees (includes net exercise)				[1]	1
Exercise of options granted to employees (includes net exercise) (in shares)			113,800		64,768
Net loss for the period
Ending Balance	94	94	94		94
Ending Balance (in shares)	93,663,064	93,552,910	93,663,064		93,552,910
Additional paid-in Capital [Member]
Beginning Balance			184,345		180,145
Share-based compensation related to stock options			161		895
Share-based compensation related to restricted stock award, net of forfeitures of 1,834 shares			522		2,558
Exercise of options granted to employees (includes net exercise)			43		102
Net loss for the period
Ending Balance	185,071	183,700	185,071		183,700
Accumulated Deficit [Member]
Beginning Balance			(211,385)		(183,595)
Share-based compensation related to stock options
Share-based compensation related to restricted stock award, net of forfeitures of 1,834 shares
Exercise of options granted to employees (includes net exercise)
Net loss for the period			(21,474)		(16,905)
Ending Balance	$ (232,859)	$ (200,500)	$ (232,859)		$ (200,500)

[1] Represents amount less than $1