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Deposits (Narrative) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Deposits [Abstract]    
Time deposits, $100,000 or more $ 137,433 $ 128,185
Time deposits, $250,000 or more 50,048 38,575
Brokered deposits $ 46,945 $ 29,738