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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2015
SHARE-BASED COMPENSATION [Abstract]  
Employee and Non-employee Restricted Stock Plan
The following table provides certain information regarding the shares authorized and outstanding under the Restricted Stock Plan at December 31, 2015:

Number of shares authorized for grants
  
800,000
 
Number of shares granted
  
(862,349
)
Number of shares forfeited
  
143,876
 
Number of shares available for future grants
  
81,527
 
Weighted-average grant price of granted shares
 
$
28.21
 
Changes in Non-vested Restricted Stock
Changes in restricted stock for the twelve months ended December 31, 2015 were as follows:

  
Number of
Shares
  
Weighted Average
Grant Price
 
Non-vested at December 31, 2014
  
179,942
  
$
52.71
 
Granted
  
24,971
  
$
40.95
 
Forfeited
  
(20,855
)
 
$
41.34
 
Vested
  
(57,401
)
 
$
44.99
 
Non-vested at December 31, 2015
  
126,657
  
$
55.54