Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Summary of Stock Option Activity) (Details)

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STOCK-BASED COMPENSATION (Summary of Stock Option Activity) (Details) (USD $)
6 Months Ended
Jun. 30, 2013
Summary of stock option activity  
Number of Stock Options, Outstanding beginning balance 500,578
Weighted Average Exercise Price, Outstanding beginning balance $ 16.92
Number of Stock Options, Expired (44,888)
Weighted Average Exercise Price, Expired $ 18.80
Number of Stock Options, Exercised (7,423)
Weighted Average Exercise Price, Exercised $ 14.04
Number of Stock Options, Outstanding ending balance 448,267
Weighted Average Exercise Price, Outstanding ending balance $ 16.78
Number of Stock Options, Exercisable 237,222
Weighted Average Exercise Price, Options exercisable $ 19.25