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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Consolidated Statements of Comprehensive Income      
Unrealized (losses) gains arising during the period, tax $ (24) $ 1,362 $ 580
Reclassification adjustment for securities gains realized in income, tax     (56)
Minimum pension liability adjustment, tax $ 2 $ (111) $ (17)