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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Beginning balance at Dec. 31, 2014 $ 608,389 $ 77,993 $ 78,818 $ 504,060 $ (13,833) $ (38,649)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income 67,081     67,081    
Other comprehensive income (loss), net of tax (2,624)       (2,624)  
Cash dividends declared (24,487)     (24,487)    
Common stock issued in acquisition 142,469 12,333 130,136      
Treasury stock issued (182)     (2,426)   2,244
Recognition of restricted stock compensation expense 1,670   1,670      
Tax benefit from stock-based compensation 53   53      
Costs to issue equity securities (132)   (132)      
Ending balance at Dec. 31, 2015 792,237 90,326 210,545 544,228 (16,457) (36,405)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income 71,392     71,392    
Other comprehensive income (loss), net of tax 2,673       2,673  
Cash dividends declared (26,784)     (26,784)    
Treasury stock issued (115)     (2,945)   2,830
Recognition of restricted stock compensation expense 2,544   2,544      
Tax benefit from stock-based compensation 9   9      
Ending balance at Dec. 31, 2016 841,956 90,326 213,098 585,891 (13,784) (33,575)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net Income 72,968     72,968    
Other comprehensive income (loss), net of tax (4,643)       (4,643)  
Cash dividends declared (28,569)     (28,569)    
Treasury stock issued (689)     (2,183)   1,494
Recognition of restricted stock compensation expense 3,008   3,008      
Ending balance at Dec. 31, 2017 $ 884,031 $ 90,326 $ 216,106 $ 628,107 $ (18,427) $ (32,081)