Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Summary of Information Concerning Stock Options) (Details)

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STOCK-BASED COMPENSATION (Summary of Information Concerning Stock Options) (Details) (USD $)
6 Months Ended
Jun. 30, 2013
Summary of information concerning stock options  
Stock Options Vested or Expected to Vest, Stock options 435,371
Stock options, Exercisable 237,222
Stock Options Vested or Expected to Vest, Weighted average remaining contractual life in years 6 years 3 months 18 days
Weighted average remaining contractual life in years, Exercisable 4 years 10 months 28 days
Stock Options Vested or Expected to Vest, Weighted average exercise price on shares above water $ 14.36
Weighted average exercise price on shares above water, Exercisable $ 14.90
Stock Options Vested or Expected to Vest, Aggregate intrinsic value $ 1,910,616
Aggregate intrinsic value, Exercisable $ 140,089