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Consolidated Statements Of Changes In Shareholders' Equity (USD $)
In Thousands, unless otherwise specified
Capital Stock [Member]
Surplus [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2012 $ 9,051 $ 24,905 $ 95,688 $ 7,697 $ (9,295) $ 128,046
Net income     9,919     9,919
Total other comprehensive income (loss)       (11,629)   (11,629)
Dividend declared:            
Common stock     (3,655)     (3,655)
Purchase of treasury stock         (24) (24)
Stock options exercised, including related tax effects   108 (44)   450 514
Recognition of stock based compensation expense   223 10     233
Restricted stock grants   (121) 17   103 (1)
Balance at Sep. 30, 2013 9,051 25,115 101,935 (3,932) (8,766) 123,403
Balance at Dec. 31, 2013 9,051 25,085 103,907 (7,940) (8,724) 121,379
Net income     11,511     11,511
Total other comprehensive income (loss)       11,768   11,768
Dividend declared:            
Common stock     (3,967)     (3,967)
Purchase of treasury stock         (8) (8)
Stock options exercised, including related tax effects   27 (9)   417 435
Three-for-two stock split 4,526 (4,526)        
Recognition of stock based compensation expense   167       167
Restricted stock grants   16     53 69
Balance at Sep. 30, 2014 $ 13,577 $ 20,769 $ 111,442 $ 3,828 $ (8,262) $ 141,354