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STOCK-BASED COMPENSATION PLANS (Tables)
 12 Months Ended
Dec. 31, 2017
STOCK-BASED COMPENSATION PLANS [Abstract]  
Share Option and Award Activity
The following table summarizes our equity award activity during the years ended December 31, 2017, 2016 and 2015:

  
Restricted Stock Award
  
Stock-Settled
Appreciation Rights
 
 
 
Shares or
Units
  
Weighted-Average
Award Price
  
Rights
  
Weighted-Average
Award Price
 
Outstanding at December 31, 2014
  
321,322
  
$
20.49
   
129,975
  
$
16.04
 
Granted
  
176,135
   
23.97
   
—
     
Restrictions lapsed or exercised (1)
  
(147,595
)
  
18.94
   
(29,100
)
  
8.74
 
Forfeited or expired
  
(5,372
)
  
24.84
   
—
     
Outstanding at December 31, 2015
  
344,490
  
$
22.87
   
100,875
  
$
18.14
 
Granted
  
209,394
   
18.80
   
—
     
Restrictions lapsed or exercised
  
(140,864
)
  
20.55
   
—
     
Forfeited or expired
  
(15,700
)
  
20.45
   
—
     
Outstanding at December 31, 2016
  
397,320
  
$
21.64
   
100,875
  
$
18.14
 
Granted
  
199,382
   
22.00
   
—
     
Restrictions lapsed or exercised(1)
  
(157,406
)
  
22.02
   
(43,875
)
  
18.14
 
Forfeited or expired
  
(5,032
)
  
20.09
   
—
     
Outstanding at December 31, 2017
  
434,264
  
$
21.69
   
57,000
  
$
18.14
 
Exercisable at December 31, 2017
          
57,000
  
$
18.14
 
Restricted units expected to vest
  
417,590
  
$
21.71
         
Exercisable at December 31, 2016
          
74,875
  
$
18.14
 
Exercisable at December 31, 2015
          
48,875
  
$
18.14
 
 
 
  (1) The total intrinsic value of stock-settled appreciation rights exercised was approximately $457,000 in 2015 and $284,000 in 2017.