Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)

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Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash dividends declared:    
Common stock, Cash dividend per share $ 0.09 $ 0.08
Preferred stock dividend per share   $ 17.64
Series A Preferred Stock [Member]
   
Cash dividends declared:    
Preferred stock dividend per share $ 42.50 $ 42.50
Series B Preferred Stock Variable [Member]
   
Cash dividends declared:    
Preferred stock dividend per share $ 14.95