STOCK CAPITAL (Details 5) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended 159 Months Ended 162 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Mar. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Total stock-based compensation expense $ 232 $ 301 $ 872 $ 781 $ 29,544 $ 29,776
Research and development [Member]
           
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Total stock-based compensation expense 128 75 105 236 17,871 17,999
General and administrative [Member]
           
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Total stock-based compensation expense 104 226 767 545 11,425 11,529
Financial expenses, net [Member]
           
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Total stock-based compensation expense $ 0 $ 0 $ 0 $ 0 $ 248 $ 248