Time Deposits - Scheduled Maturities of Time Deposits over $100 Thousand (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Due in 2016	$ 240,042
Due in 2017	22,603
Due in 2018	8,142
Due in 2019	2,456
Due in 2020	2,103
Thereafter	1,924
Total	$ 277,270	$ 76,800