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Condensed Consolidated Statements of Income (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income Statement [Abstract]        
Accumulated other comprehensive earnings reclassifications $ 0 $ (988) $ (124) $ (988)
Income tax expense from reclassification $ 0 $ 346 $ 43 $ 346