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STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)
In Thousands, except Share data
Total
Ordinary shares [Member]
Additional paid-in capital [Member]
Accumulated other comprehensive income [Member]
Accumulated deficit [Member]
Balance at Dec. 31, 2010 $ 28,285 $ 92 $ 190,275 $ 6,405 $ (168,487)
Balance, shares at Dec. 31, 2010   33,915,545      
Employee options exercised 2,041 2 2,039      
Employee options exercised, shares   792,077      
Stock-based compensation relating to options and warrants issued to consultants 457    457      
Stock-based compensation relating to options issued to employees 2,943    2,943      
Other comprehensive (loss) income (2,141)      (2,141)   
Net loss (12,004)          (12,004)
Balance at Dec. 31, 2011 19,581 94 195,714 4,264 (180,491)
Balance, shares at Dec. 31, 2011 34,707,622 34,707,622      
Employee options exercised 1,749 1 1,748   (180,491)
Employee options exercised, shares   631,689      
Issuance of shares 3,663 2 3,661      
Issuance of shares, shares   651,000      
Stock-based compensation relating to options and warrants issued to consultants 103    103    
Stock-based compensation relating to options issued to employees 967    967      
Other comprehensive (loss) income 569       569   
Net loss (4,745)       (4,745)
Balance at Jun. 30, 2012 $ 21,887 $ 97 $ 202,193 $ 4,833 $ (185,236)
Balance, shares at Jun. 30, 2012 35,990,311 35,990,311