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Consolidated Statement of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Additional Paid-In Capital [Member]
Series D Preferred Stock [Member]
Additional Paid-In Capital [Member]
Series C And F Preferred Stock [Member]
Additional Paid-In Capital [Member]
Series H Preferred Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Series D Preferred Stock [Member]
Series C And F Preferred Stock [Member]
Series H Preferred Stock [Member]
Total
Beginning balance at Dec. 31, 2019       $ 215,310 $ 48,429 $ (22,048) $ (2,218)       $ 239,473
Net income         13,559           13,559
Other comprehensive income             2,845       2,845
Cost for issuance of common stock       (126)             (126)
Issuance of stock     $ 8,950             $ 8,950  
Redemption of Preferred Stock $ (10,485)             $ (10,485)      
Exercise of stock options       5             5
Stock-based compensation expense       944             944
Treasury stock purchases           (4,870)         (4,870)
Dividends payable on Series C 6%, Series D 4.5%, Series F 6%, Series G 6%, and Series H 3.5% noncumulative perpetual preferred stock         (1,014)           (1,014)
Cash dividends on common stock         (6,915)           (6,915)
Dividend reinvestment plan       317 (317)            
Stock purchase plan       321             321
Ending balance at Sep. 30, 2020       215,236 53,742 (26,918) 627       242,687
Beginning balance at Jun. 30, 2020       219,116 48,097 (26,918) 724       241,019
Net income         8,312           8,312
Other comprehensive income             (97)       (97)
Issuance of stock     $ 5,870             $ 5,870  
Redemption of Preferred Stock   $ (10,345)             $ (10,345)    
Stock-based compensation expense       385             385
Dividends payable on Series C 6%, Series D 4.5%, Series F 6%, Series G 6%, and Series H 3.5% noncumulative perpetual preferred stock         (332)           (332)
Cash dividends on common stock         (2,227)           (2,227)
Dividend reinvestment plan       108 (108)            
Stock purchase plan       102             102
Ending balance at Sep. 30, 2020       215,236 53,742 (26,918) 627       242,687
Beginning balance at Dec. 31, 2020       217,999 58,335 (26,918) (205)       249,211
Net income         23,489           23,489
Other comprehensive income             (9)       (9)
Exercise of stock options       281             281
Stock-based compensation expense       337             337
Treasury stock purchases           (2,511)         (2,511)
Dividends payable on Series C 6%, Series D 4.5%, Series F 6%, Series G 6%, and Series H 3.5% noncumulative perpetual preferred stock         (852)           (852)
Cash dividends on common stock         (7,241)           (7,241)
Dividend reinvestment plan       343 (343)            
Stock purchase plan       376             376
Ending balance at Sep. 30, 2021       219,336 73,388 (29,429) (214)       263,081
Beginning balance at Jun. 30, 2021       218,691 68,123 (28,197) (93)       258,524
Net income         8,322           8,322
Other comprehensive income             (121)       (121)
Exercise of stock options       281             281
Stock-based compensation expense       86             86
Treasury stock purchases           (1,232)         (1,232)
Dividends payable on Series C 6%, Series D 4.5%, Series F 6%, Series G 6%, and Series H 3.5% noncumulative perpetual preferred stock         (286)           (286)
Cash dividends on common stock         (2,647)           (2,647)
Dividend reinvestment plan       124 (124)            
Stock purchase plan       154             154
Ending balance at Sep. 30, 2021       $ 219,336 $ 73,388 $ (29,429) $ (214)       $ 263,081