STOCK CAPITAL (Details 5) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended 147 Months Ended 150 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Mar. 31, 2013
Research and Development Expense [Member]
           
Stock-based compensation expense $ 75 $ 13 $ 210 $ 316 $ 17,630 $ 17,841
General and Administrative Expense [Member]
           
Stock-based compensation expense 226 168 545 1,075 10,658 10,884
Interest Expenses [Member]
           
Stock-based compensation expense 0 0 0 192 248 248
Total Stock Based Compensation [Member]
           
Stock-based compensation expense $ 301 $ 181 $ 755 $ 1,584 $ 28,536 $ 28,973