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Securities (Gross Realized Gains (Losses) on Investments) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Securities [Abstract]    
Available-for-sale Securities, Gross Realized Gains $ 570 $ 484
Available-for-sale Securities, Gross Realized Losses (4) (63)
Available-for-sale Securities, Gross Realized Gain (Loss), Total 566 421
Held-to-maturity Securities, Sold Security, Realized Gain 7  
Held-to-maturity Securities, Sold Security, Realized Loss   (118)
Held-to-maturity Securities, Sold Security, Realized Gain (Loss), Total 7 (118)
Gain (Loss) on Sale of Securities, Net, Total $ 573 $ 303