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Securities (Gross Realized Gains (Losses) on Investments) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Securities [Abstract]        
Available-for-sale Securities, Gross Realized Gains $ 283 $ 41 $ 511 $ 168
Available-for-sale Securities, Gross Realized Losses   (12) (4) (13)
Available-for-sale Securities, Gross Realized Gain (Loss), Total 283 29 507 155
Held-to-maturity Securities, Sold Security, Realized Loss   (68)   (68)
Held-to-maturity Securities, Sold Security, Realized Gain (Loss), Total   (68)   (68)
Gain (Loss) on Sale of Securities, Net, Total $ 283 $ (39) $ 507 $ 87