Deposits - Schedule of Contractual Maturities of Time Deposits 100000 or More Outstanding (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Time remaining until maturity:
Three months or less	$ 59,739	$ 4,675
Over three through six months	26,053	10,039
Over six through twelve months	20,987	12,912
Over one year through three years	67,253	5,710
Over three years	8,981	1,468
Maturities of certificates of deposits outstanding, Total	$ 183,013	$ 34,804