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Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $)
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Common dividends declared, per share $ 0.24 $ 0.21
Preferred dividends declared, per share $ 30.00 $ 30.00
Preferred stock converted to common stock, shares 103,500  
Common stock options exercised, shares 789  
Restricted stock awards shares 29,148 1,300
Purchase of treasury shares 130,804  
Acquisition of Peoples Bank of Virginia, shares   2,157,005
Treasury stock shares acquired cost per share $ 15.43