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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2017
Accounting Policies [Abstract]  
Schedule of stock option plans, changes in options outstanding
           Weighted     
       Weighted   Average   Aggregate 
       Average   Remaining   Intrinsic 
   Number of   Exercise   Contractual   Value 
   Options   Price   Term   (In thousands) 
Balance, January 1, 2017   179,159   $16.27           
Granted during 2017                  
Exercised during 2017   (23,447)   18.78           
Expired during 2017   (7,092)   26.78           
Forfeited during 2017                  
Balance, March 31, 2017   148,620   $15.37    3.84 years   $2,114 
Vested and expected to vest   148,534   $15.38    3.84 years   $2,110 
Exercisable at March 31, 2017   147,185   $15.35    3.82 years   $2,095 

 

Schedule of changes in nonvested performance-based shares

       Weighted 
       Average 
   Number of   Grant Date 
   Shares   Fair Value 
Balance, January 1, 2017   92,767   $18.12 
Granted during 2017        
Vested during 2017        
Forfeited during 2017        
Balance, March 31, 2017   92,767   $18.12 

Schedule of changes in nonvested shares
       Weighted 
       Average 
   Number of   Grant Date 
   Shares   Fair Value 
Balance, January 1, 2017   368,130   $19.26 
Granted during 2017   129,628    30.08 
Vested during 2017   (140,053)   18.44 
Forfeited during 2017   (700)   18.11 
Balance, March 31, 2017   357,005   $23.51 
Schedule of calculation of basic and diluted earnings per share
   Three Months Ended 
   March 31, 
(Dollars in thousands, except per share data)  2017   2016 
         
Net income to shareholders  $7,982   $5,489 
           
Basic weighted-average shares outstanding   17,121,631    15,858,278 
Plus: common stock equivalents   317,276    158,694 
Diluted weighted-average shares outstanding   17,438,907    16,016,972 
Net income per share          
Basic  $0.47   $0.35 
Diluted   0.46    0.34