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Consolidated Statements of Comprehensive Income (Parenthetical) (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Consolidated Statements of Comprehensive Income [Abstract]        
Unrealized gains (losses) on securities, tax $ 292 $ (1,034) $ 610 $ (959)
Reclassification adjustment, tax 5 293 728 293
Other comprehensive income, tax $ 297 $ (741) $ 1,338 $ (666)