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AFS Securities (Activity related to sales of AFS securities) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]        
Proceeds from sales of AFS of securities $ 35,664   $ 35,664  
Gross realized gains (losses) 245 $ 0 245 $ 0
Applicable income tax expense $ 83   $ 83