Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Capital Surplus [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
Deferred Benefits for Directors [Member]
Beginning Balance at Dec. 31, 2016 $ 1,341,408 $ 91,524 $ 680,507 $ 597,071 $ (27,126) $ (568)
Beginning Balance, shares at Dec. 31, 2016   43,931,715        
Net income 25,886     25,886    
Other comprehensive income 2,285       2,285  
Comprehensive income 28,171          
Common dividends declared ($0.26 per share) (11,429)     (11,429)    
Stock options exercised 526 $ 36 490      
Stock options exercised, shares   17,634        
Restricted stock granted   $ 8 (8)      
Restricted stock granted, shares   3,702        
Stock compensation expense 477   477      
Deferred benefits for directors - net     5     (5)
Ending Balance at Mar. 31, 2017 1,359,153 $ 91,568 681,471 611,528 (24,841) (573)
Ending Balance, shares at Mar. 31, 2017   43,953,051        
Beginning Balance at Dec. 31, 2017 1,395,321 $ 91,756 684,730 651,357 (31,495) (1,027)
Beginning Balance, shares at Dec. 31, 2017   44,043,244        
Net income 33,529     33,529    
Other comprehensive income (14,518)       (14,518)  
Comprehensive income 19,011          
Common dividends declared ($0.26 per share) (12,775)     (12,775)    
Adoption of accounting standard ASU 2016-01       1,063 (1,063)  
Stock options exercised 560 $ 37 523      
Stock options exercised, shares   17,713        
Stock compensation expense 909   909      
Deferred benefits for directors - net     7     (7)
Ending Balance at Mar. 31, 2018 $ 1,403,026 $ 91,793 $ 686,169 $ 673,174 $ (47,076) $ (1,034)
Ending Balance, shares at Mar. 31, 2018   44,060,957