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Consolidated Statements Of Changes In Shareholders' Equity - USD ($)
$ in Thousands
Series A 3% Preferred Stock [Member]
Retained Earnings [Member]
Series A 3% Preferred Stock [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 Loss [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2014         $ 17,340 $ 144 $ 72,955 $ 203,312 $ (9,011) $ (5,208) $ 279,532
Comprehensive income:                      
Net income               13,386     13,386
Other comprehensive income, net of tax                 (2,671)   (2,671)
Purchases of common stock for treasury                   (41) (41)
Share-based compensation plans:                      
Share-based compensation             370       370
Stock options exercised             2     163 165
Restricted stock awards issued, net             (1,060)     1,060  
Excess tax benefit on share-based compensation             1       1
Stock awards             11     43 54
Cash dividends declared:                      
Preferred stock dividends per share $ (2) $ (2) $ (729) $ (729)              
Common stock dividends per share               (5,630)     (5,630)
Balance at Jun. 30, 2015         17,340 144 72,279 210,337 (11,682) (3,983) 284,435
Balance at Dec. 31, 2015         17,340 144 72,690 218,920 (11,327) (3,923) 293,844
Comprehensive income:                      
Net income               14,769     14,769
Other comprehensive income, net of tax                 10,673   10,673
Common stock issued           3 8,097       8,100
Share-based compensation plans:                      
Share-based compensation             432       432
Stock options exercised             19     767 786
Restricted stock awards issued, net             (17)     17  
Excess tax benefit on share-based compensation             13       13
Stock awards             21     43 64
Cash dividends declared:                      
Preferred stock dividends per share $ (2) $ (2) $ (729) $ (729)              
Common stock dividends per share               (5,774)     (5,774)
Balance at Jun. 30, 2016         $ 17,340 $ 147 $ 81,255 $ 227,184 $ (654) $ (3,096) $ 322,176