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STOCK-BASED COMPENSATION (Details) (USD $)
 6 Months Ended
Jun. 30, 2013
Number of options, outstanding  
Outstanding, beginning of period (in shares) 1,879
Granted (in shares) 60
Exercised (in shares) (41)
Legal award (in shares) 94
Cancelled (in shares) (5)
Outstanding, end of period (in shares) 1,987
Options, weighted average exercise price  
Outstanding, beginning of period (in dollars per share) $ 3.81
Granted (in dollars per share) $ 5.42
Exercised (in dollars per share) $ 1.13
Legal award (in dollars per shares) $ 7.00
Cancelled (in dollars per share) $ 2.54
Outstanding, end of period (in dollars per share) $ 4.06