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	3,759		3,759
Exercise of options granted to employees	1,055	1	1,054
Exercise of options granted to employees (in shares)		1,117,249
Net profit (loss) for the period	3,738			3,738
Ending Balance at Jun. 30, 2012	7,863	92	176,010	(168,239)
Ending Balance (in shares) at Jun. 30, 2012		91,922,406
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	645		645
Share-based compensation related to restricted stock award, net of forfeitures	1,854		1,854
Share-based compensation related to restricted stock award, net of forfeitures (in shares)		(1,667)
Exercise of options granted to employees	30	1	29
Exercise of options granted to employees (in shares)		21,480
Net profit (loss) for the period	(11,158)			(11,158)
Ending Balance at Jun. 30, 2013	$ (11,986)	$ 94	$ 182,673	$ (194,753)
Ending Balance (in shares) at Jun. 30, 2013		93,509,622