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Investment Securities (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]      
Gains realized on sales $ 8 $ 86 $ 786
Losses realized on sales 0 (66) (8)
Other-than-temporary impairment recognized 0 0 0
Investment securities gains $ 8 $ 20 $ 778