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Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Condensed Consolidated Statements of Comprehensive Income (unaudited) [Abstract]    
Unrealized holding gain (loss), taxes $ 16 $ 59
Reclassification adjustments for (gains) losses on sales of securities, taxes 0 0
Reclassification adjustments for other-than-temporary impairment on securities, taxes $ 6 $ 31