Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gain on securities available for sale	$ 920	$ 4,018
Unamortized gain on securities held to maturity, previously transferred from AFS	1,109	1,658
Unrealized loss on derivative instruments	(3,142)	(3,337)
Tax effect	390	(818)
Total accumulated other comprehensive income (loss)	$ (723)	$ 1,521