Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 7,231	$ 8,314	$ 24,698	$ 13,069
Securities available-for-sale:
Net unrealized gains (losses) arising during the period, net of tax	197	(2,242)	1,473	9,956
Less: amortization of net unrealized holding gains to income, net of tax	(336)	(489)	(1,046)	(1,504)
Other comprehensive income (loss)	(139)	(2,731)	427	8,452
Comprehensive income (loss)	$ 7,092	$ 5,583	$ 25,125	$ 21,521