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SHAREHOLDERS' EQUITY (Details 4) (Range of Exercise prices, $2.80 - $9.87, USD $)
12 Months Ended
Dec. 31, 2012
Range of Exercise prices, $2.80 - $9.87
 
Shares authorized under the stock option plans, exercise price range  
Exercise price, low end of range (in dollars per share) $ 2.80
Exercise price, high end of range (in dollars per share) $ 9.87
Number of outstanding options (in shares) 705,159
Weighted average remaining contractual life of outstanding options 2 years 22 days
Weighted average exercise price of outstanding options (in dollars per share) $ 4.16
Number of outstanding exercisable options (in shares) 653,034
Weighted average remaining contractual life of exercisable options 1 year 10 months 10 days
Weighted average exercise price of exercisable options (in dollars per share) $ 4.02