Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 10,981	$ 10,037	$ 24,297	$ 18,427
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $(2,531) and $64 for three months ended June 30, 2019 and 2018, respectively and $(5,653) and $2,605 for six months ended June 30, 2019 and 2018, respectively.	6,195	(150)	13,841	(6,370)
Amortized holding losses on held-to-maturity securities transferred from available-for-sale, net of taxes of $(8) for both three months ended June 30, 2019 and 2018 and $(17) for both six months ended June 30, 2019 and 2018.	21	21	41	40
Less: reclassification adjustment for realized gains included in net income, net of taxes of $63 and $255 for three months ended June 30, 2019 and 2018, respectively and $79 and $261 for six months ended June 30, 2019 and 2018, respectively.	(155)	(626)	(193)	(640)
Other comprehensive income (loss), net of taxes	6,061	(755)	13,689	(6,970)
Comprehensive income	$ 17,042	$ 9,282	$ 37,986	$ 11,457