Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 23,060	$ 4,881	$ 9,176
Securities available-for-sale:
Net unrealized gains (losses) arising during the period, net of tax (expense) benefit of $(26), $2,015 and $(9,694) for the years ended 2016, 2015 and 2014, respectively	42	(3,275)	15,765
Less: amortization of net unrealized holding gains to income, net of tax benefit of $1,166, $1,523 and $520 for the years ended 2016, 2015 and 2014, respectively	(1,899)	(2,469)	(3,170)
Other comprehensive (loss) income	(1,857)	(5,744)	12,595
Comprehensive income (loss)	$ 21,203	$ (863)	$ 21,771