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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - 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]
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 Loss [Member]
Accumulated Other Comprehensive Loss [Member]
Adjusted Balance [Member]
Treasury Stock [Member]
Treasury Stock [Member]
Adjusted Balance [Member]
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 1,127                     1,127                
Other comprehensive income (loss), net of tax 12,431                               12,431      
Purchases of common stock for treasury (196)                                   (196)  
Share-based compensation plans:                                        
Share-based compensation 332                 332                    
Restricted stock units released                   (469)                 469  
Cash dividends declared:                                        
Preferred stock dividends per share   $ (1) $ (364)                   $ (1) $ (364)            
Common stock dividends per share (4,164)                     (4,164)                
Balance at Mar. 31, 2020 439,393         17,328   161   124,445   301,243         (2,082)   (1,702)  
Balance at Dec. 31, 2020 468,363         17,328   161   125,118   324,850         2,128   (1,222)  
Comprehensive income:                                        
Net income 20,710                     20,710                
Other comprehensive income (loss), net of tax (12,700)                               (12,700)      
Common stock issued 301                 3                 298  
Purchases of common stock for treasury (5,963)                                   (5,963)  
Purchases of 8.48% preferred stock (6)         (6)                            
Share-based compensation plans:                                        
Share-based compensation 216                 216                    
Restricted stock units released                   (446)                 446  
Cash dividends declared:                                        
Preferred stock dividends per share   $ (1) $ (364)                   $ (1) $ (364)            
Common stock dividends per share (4,272)                     (4,272)                
Balance at Mar. 31, 2021 $ 466,284         $ 17,322   $ 161   $ 124,891   $ 340,923         $ (10,572)   $ (6,441)