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Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Series A 3% Preferred Stock [Member]
Series B-1 8.48% Preferred Stock [Member]
Cumulative-Effect Adjustment [Member]
Adjusted Balance [Member]
Preferred Equity [Member]
Preferred Equity [Member]
Series A 3% Preferred Stock [Member]
Preferred Equity [Member]
Adjusted Balance [Member]
Common Stock [Member]
Common Stock [Member]
Adjusted Balance [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Adjusted Balance [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Series A 3% Preferred Stock [Member]
Retained Earnings [Member]
Series B-1 8.48% Preferred Stock [Member]
Retained Earnings [Member]
Cumulative-Effect Adjustment [Member]
Retained Earnings [Member]
Adjusted Balance [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Adjusted Balance [Member]
Treasury Stock [Member]
Treasury Stock [Member]
Adjusted Balance [Member]
Balance at Dec. 31, 2017 $ 381,177         $ 17,329     $ 161   $ 121,058   $ 257,078         $ (11,916)   $ (2,533)  
Comprehensive income:                                          
Net income 39,526                       39,526                
Other comprehensive income (loss), net of tax (9,365)                                 (9,365)      
Purchase of common stock for treasury (113)                                     (113)  
Repurchase of preferred stock   $ (1)         $ (1)                            
Share-based compensation plans:                                          
Share-based compensation 1,301                   1,301                    
Stock options exercised 320                   (19)                 339  
Restricted stock awards issued, net                     303                 (303)  
Stock awards 185                   61                 124  
Cash dividends declared:                                          
Preferred stock dividends per share   (4) $ (1,457)                     $ (4) $ (1,457)            
Common stock dividends per share (15,276)                       (15,276)                
Balance at Dec. 31, 2018 396,293     $ (710) $ 395,583 17,328   $ 17,328 161 $ 161 122,704 $ 122,704 279,867     $ (710) $ 279,157 (21,281) $ (21,281) (2,486) $ (2,486)
Comprehensive income:                                          
Net income 48,862                       48,862                
Other comprehensive income (loss), net of tax 9,551                                 9,551      
Reclassification of income tax effects                         2,783         (2,783)      
Purchase of common stock for treasury (293)                                     (293)  
Common stock issued 1,151                   1,151                    
Share-based compensation plans:                                          
Share-based compensation 1,406                   1,406                    
Restricted stock units released                     (554)                 554  
Restricted stock awards issued, net                     (165)                 165  
Stock awards 125                   40                 85  
Cash dividends declared:                                          
Preferred stock dividends per share   (4) (1,457)                     (4) (1,457)            
Common stock dividends per share (15,977)                       (15,977)                
Balance at Dec. 31, 2019 438,947     $ (8,719) $ 430,228 17,328   $ 17,328 161 $ 161 124,582 $ 124,582 313,364     $ (8,719) $ 304,645 (14,513) $ (14,513) (1,975) $ (1,975)
Comprehensive income:                                          
Net income 38,332                       38,332                
Other comprehensive income (loss), net of tax 16,641                                 16,641      
Purchase of common stock for treasury (209)                                     (209)  
Share-based compensation plans:                                          
Share-based compensation 1,333                   1,333                    
Restricted stock units released                     (511)                 511  
Restricted stock awards issued, net                     (272)                 272  
Stock awards 165                   (14)                 179  
Cash dividends declared:                                          
Preferred stock dividends per share   $ (4) $ (1,457)                     $ (4) $ (1,457)            
Common stock dividends per share (16,666)                       (16,666)                
Balance at Dec. 31, 2020 $ 468,363         $ 17,328     $ 161   $ 125,118   $ 324,850         $ 2,128   $ (1,222)