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Investments (Securities Gains (Losses)) (Details) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Schedule of Investments [Line Items]    
Gross gains on sales of investment securities available for sale$ 375$ 1,167$ 531$ 3,803
Gross losses on sales of investment securities available for sale(95)(1)(796)(1,506)
Total securities gains (losses)254940(291)1,885
Equity Securities [Member]
    
Schedule of Investments [Line Items]    
Other that temporary impairment loss on equity securities$ (26)$ (226)$ (26)$ (412)