Annual report pursuant to Section 13 and 15(d)

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical)

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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Common Stock, Regular
     
Paid cash dividends, per share $ 0.32 $ 0.16 $ 0.14
Common Stock, Special
     
Paid cash dividends, per share $ 0.79 $ 0.63 $ 0.66