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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Taxes
Balance (in shares) at Dec. 31, 2013   5,877,524    
Balance at Dec. 31, 2013 $ 180,887 $ 80,095 $ 101,464 $ (672)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income 19,771   19,771  
Other comprehensive income 1,760     1,760
Stock options exercised (in shares)   49,415    
Stock options exercised 1,452 $ 1,452    
Excess tax benefit - stock-based compensation 172 $ 172    
Stock issued under employee stock purchase plan (in shares)   521    
Stock issued under employee stock purchase plan 23 $ 23    
Restricted stock granted (in shares)   8,523    
Restricted stock granted 0 $ 0    
Restricted stock forfeited/cancelled (in shares)   (2,067)    
Restricted stock forfeited/cancelled 0 $ 0    
Stock-based compensation - stock options 200 200    
Stock-based compensation - restricted stock 246 $ 246    
Cash dividends paid on common stock (4,733)   (4,733)  
Stock purchased by directors under director stock plan (in shares)   260    
Stock purchased by directors under director stock plan 12 $ 12    
Stock issued in payment of director fees (in shares)   5,306    
Stock issued in payment of director fees $ 236 $ 236    
Balance (in shares) at Dec. 31, 2014 5,939,482 5,939,482    
Balance at Dec. 31, 2014 $ 200,026 $ 82,436 116,502 1,088
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income 13,516   13,516  
Other comprehensive income 512     512
Stock options exercised (in shares)   29,358    
Stock options exercised 888 $ 888    
Excess tax benefit - stock-based compensation 172 $ 172    
Stock issued under employee stock purchase plan (in shares)   253    
Stock issued under employee stock purchase plan 12 $ 12    
Restricted stock granted (in shares)   15,970    
Restricted stock granted 0 $ 0    
Restricted stock forfeited/cancelled (in shares)   (450)    
Restricted stock forfeited/cancelled 0 $ 0    
Stock-based compensation - stock options 192 192    
Stock-based compensation - restricted stock 285 $ 285    
Cash dividends paid on common stock (3,936)   (3,936)  
Stock purchased by directors under director stock plan (in shares)   245    
Stock purchased by directors under director stock plan 12 $ 12 0  
Stock issued in payment of director fees (in shares)   5,295    
Stock issued in payment of director fees $ 275 $ 275    
Stock issued from exercise of warrants   70,591    
Balance (in shares) at Sep. 30, 2015 6,060,744 6,060,744    
Balance at Sep. 30, 2015 $ 211,954 $ 84,272 $ 126,082 $ 1,600