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Investments (Gross Gains And Losses Realized) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Investments [Abstract]        
Gross realized gains $ 1,256 $ 2,116 $ 1,256 $ 2,130
Gross realized losses (411) 0 (411) 0
Net investment security gains $ 845 $ 2,116 $ 845 $ 2,130