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Investments (Securities Gains (Losses)) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Schedule of Investments [Line Items]    
Gross gains on sales of investment securities available for sale $ 58 $ 0
Gross losses on sales of investment securities available for sale 0 0
Total securities gains (losses) (58) (45)
Equity Securities
   
Schedule of Investments [Line Items]    
Other than temporary impairment loss on equity securities $ 0 $ (45)