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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2020
STOCK-BASED COMPENSATION [Abstract]  
Summary of Stock Option Activity
A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below:

  
Number
of Shares
  
Weighted-Average
Exercise Price
  
Weighted-Average
Remaining Contractual
Life in Years
  
Aggregate
Intrinsic Value
 
Year Ended December 31, 2020
            
Outstanding at beginning of year:
  
1,462,997
  
$
13.42
     
$
8,212
 
Granted
  
248,966
   
20.93
      
—
 
Exercised
  
(122,207
)
  
10.33
      
(1,053
)
Forfeited
  
(33,727
)
  
17.83
      
(49
)
Expired
  
(1,135
)
  
16.00
      
(3
)
                
Balance, December 31, 2020
  
1,554,894
  
$
14.77
   
5.97
  
$
7,107
 
                 
Exercisable at end of period
  
986,088
  
$
12.39
   
5.24
  
$
6,517
 
                 
Vested at end of period
  
986,088
  
$
12.39
   
5.24
  
$
6,517
 
Summary of Assumptions Used to Calculate Fair Value of Awards
A summary of assumptions used to calculate the fair values of the awards is presented below:

  
December 31,
 
  
2020
  
2019
 
Expected volatility
  
27.46
%
 
24.88% to 31.54%
 
Expected dividend yield
  
0.70
%
  
0.70
%
Expected term (years)
 
6.2 years
  
0.5 - 7.0 years
 
Risk-free interest rate
  
1.44
%
 
1.46% to 2.63%
 
Weighted average grant date fair value
 
$
5.68
  
$
7.98
 
Summary of Activity of Restricted Stock Units
A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below:

  
Number
of Shares
  
Weighted-Average
Grant Date
Fair Value
 
Year Ended December 31, 2020
      
Outstanding at beginning of year:
  
81,200
  
$
19.46
 
Granted
  
5,970
   
20.93
 
Exercised
  
(24,694
)
  
19.79
 
Forfeited
  
—
   
—
 
         
Balance, December 31, 2020
  
62,476
  
$
19.47