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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2017
SHARE-BASED COMPENSATION [Abstract]  
Changes in Restricted Stock
Changes in restricted stock for the twelve months ended December 31, 2017 were as follows:

  
Number of
Shares
  
Weighted Average
Grant Price
 
Non-vested at December 31, 2016
  
143,380
  
$
26.76
 
Granted
  
18,672
  
$
34.07
 
Forfeited
  
(298
)
 
$
59.60
 
Vested
  
(83,853
)
 
$
24.92
 
Non-vested at December 31, 2017
  
77,901
  
$
30.36
 
 
Changes in restricted stock for the twelve months ended December 31, 2016 were as follows:

  
Number of
Shares
  
Weighted Average
Grant Price
 
Non-vested at December 31, 2015
  
137,507
  
$
54.58
 
Granted
  
108,553
  
$
17.07
 
Forfeited
  
(39,000
)
 
$
65.41
 
Vested
  
(63,680
)
 
$
46.65
 
Non-vested at December 31, 2016
  
143,380
  
$
26.76
 

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
  
35,821
  
$
40.95
 
Forfeited
  
(20,855
)
 
$
41.34
 
Vested
  
(57,401
)
 
$
44.99
 
Non-vested at December 31, 2015
  
137,507
  
$
54.58