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Consolidated Statements of Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Consolidated Statements of Income        
Impairment charges, other-than-temporary impairment charges $ (8) $ (13) $ (115) $ (27)
Impairment charges, other comprehensive (loss) income $ (281) $ (560) $ (667) $ (1,273)