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Securities Available-for-Sale - Schedule of Gross and Net Realized Gains and Losses on Sale of Securities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]      
Gross realized gains $ 0 $ 0 $ 41
Gross realized losses 0 (34) 0
Net Realized Gains $ 0 $ (34) $ 41