Deposits - Maturities on Outstanding Time Deposits of $100,000 or More (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Maturities of time deposits of $ 100000 or more [Abstract]
3 months or less	$ 150,991	$ 151,339
Over 3 months through 6 months	147,089	132,440
Over 6 months through 12 months	204,944	197,630
Over 12 months	179,469	193,914
Total	$ 682,493	$ 675,323