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Consolidated Statement Of Changes In Shareholders' Equity (USD $)
In Thousands, unless otherwise specified
Series A 3% Preferred Stock [Member]
Preferred Equity [Member]
Series A 3% Preferred Stock [Member]
Retained Earnings [Member]
Series A 3% Preferred Stock [Member]
Series B-1 8.48% Preferred Stock [Member]
Preferred Equity [Member]
Series B-1 8.48% Preferred Stock [Member]
Additional Paid-In Capital [Member]
Series B-1 8.48% Preferred Stock [Member]
Retained Earnings [Member]
Series B-1 8.48% Preferred Stock [Member]
Preferred Equity [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2012               $ 17,471 $ 142 $ 67,710 $ 172,244 $ 3,253 $ (6,923) $ 253,897
Comprehensive income:                            
Net income                     19,163     19,163
Other comprehensive income (loss), net of tax                       (16,571)   (16,571)
Repurchases of stock (1)   (1) (128) (2)   (130)           (229) (229)
Share-based compensation plans:                            
Share-based compensation                   312       312
Stock options exercised                   (5)     71 66
Restricted stock awards issued, net                   (446)     446  
Excess tax benefit on share-based compensation                   (118)       (118)
Directors' retainer                   7     105 112
Cash dividends declared:                            
Preferred stock dividends per share   (3) (3)     (1,097) (1,097)             (1,100)
Common stock dividends per share                     (7,556)     (7,556)
Balance at Sep. 30, 2013               17,342 142 67,458 182,751 (13,318) (6,530) 247,845
Balance at Dec. 31, 2013               17,342 142 67,574 186,137 (10,187) (6,169) 254,839
Comprehensive income:                            
Net income                     21,435     21,435
Other comprehensive income (loss), net of tax                       4,741   4,741
Issuance of common stock for acquisition                 2 5,398       5,400
Repurchases of stock       (2)     (2)           (195) (195)
Share-based compensation plans:                            
Share-based compensation                   383       383
Stock options exercised                   2     158 160
Restricted stock awards issued, net                   (554)     554  
Cash dividends declared:                            
Preferred stock dividends per share   (3) (3)     (1,094) (1,094)             (1,097)
Common stock dividends per share                     (7,906)     (7,906)
Balance at Sep. 30, 2014               $ 17,340 $ 144 $ 72,803 $ 198,569 $ (5,446) $ (5,652) $ 277,758