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STOCK BASED COMPENSATION - Restricted Stock Units Activity (Detail) (USD $)
9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Number of Units    
Outstanding at beginning of period 68,202  
Granted 17,800  
Released (12,750)  
Forfeited (907)  
Outstanding at end of period 72,345  
Exercisable at end of period 0  
Weighted Average Remaining Contractual Life (in years)    
Outstanding at end of period 2 years 10 months 24 days  
Exercisable at end of period 0 years  
Aggregate Intrinsic Value    
Outstanding at end of period   $ 8,348,613
Exercisable at end of period $ 0