Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 36,600	$ 26,684	$ 21,840
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $1,475, $(2,855), and $3,848 for the years ended December 31, 2018, 2017 and 2016, respectively	(3,611)	3,845	(6,025)
Unamortized holding gains on held to maturity securities transferred from available for sale, net of taxes of $(33), $(32), and $(172) for December 31, 2018, 2017 and 2016, respectively	82	80	268
Less: reclassification adjustment for realized gains included in net income net of taxes of $261, $216, and $465 for the years ended December 31, 2018, 2017 and 2016, respectively	(640)	(400)	(727)
Other comprehensive income (loss), net of taxes	(4,169)	3,525	(6,484)
Comprehensive income	$ 32,431	$ 30,209	$ 15,356