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STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2013
STOCK-BASED COMPENSATION [Abstract]  
Shares Authorized and Outstanding Under the Restricted Stock Plan
The following table provides certain information regarding the shares authorized and outstanding under the Restricted Stock Plan at June 30, 2013:

Number of shares authorized for grants
  800,000 
Number of shares granted
  (780,907)
Number of shares forfeited
  108,619 
Number of shares available for future grants
  127,712 
Weighted-average grant price of granted shares
 $23.25 

Changes in restricted stock for the six months ended June 30, 2013 were as follows:

   
Number of
Shares
  
Weighted Average
Grant Price
 
Non-vested at December 31, 2012
  210,330  $26.85 
Granted
  92,536  $50.29 
Forfeited
  (28,621) $37.36 
Vested
  (34,539) $26.86 
Non-vested at June 30, 2013
  239,706  $34.62