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Stock-Based Compensation Plans (Tables)
 6 Months Ended
Jun. 30, 2018
Equity-Based Compensation Plans [Abstract]  
Schedule of outstanding restricted stock

The following table presents information regarding the activity the first six months of 2018 related to the Company’s outstanding restricted stock:

 

   Long-Term Restricted Stock 
   Number of Units   Weighted-Average
Grant-Date Fair Value		 
         
Nonvested at January 1, 2018  103,063   $24.08 
           
Granted during the period   32,027    39.10 
Vested during the period   (10,626)   17.53 
Forfeited or expired during the period   (2,977)   25.21 
           
Nonvested at June 30, 2018   121,487   $28.58 
Schedule of Company's stock options outstanding

The following table presents information regarding the activity for the first six months of 2018 related to the Company’s stock options outstanding:

 

   Options Outstanding 
   Number of
Shares		   Weighted-
Average
Exercise
Price		   Weighted-
Average
Contractual
Term (years)		   Aggregate
Intrinsic
Value		 
                 
Balance at January 1, 2018   38,689   $16.09           
                     
   Granted   —    —           
   Exercised   (29,689)   16.61        $659,743 
   Forfeited   —    —           
   Expired   —    —           
                     
Outstanding at June 30, 2018   9,000   $14.35    0.9   $239,040 
                     
Exercisable at June 30, 2018   9,000   $14.35    0.9   $239,040