Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 6,134	$ 5,402	$ 17,123	$ 13,573
Other Comprehensive Income (Loss)
Net unrealized holding gain (loss) on securities available for sale	3,340	(3,186)	15,729	(9,429)
Reclassification adjustment for realized gains included in net income	(109)	(406)	(975)	(666)
Other comprehensive income (loss), before tax, total	3,231	(3,592)	14,754	(10,095)
Income tax (benefit) expense related to other comprehensive income	(683)	758	(3,118)	2,139
Other comprehensive income (loss), net of tax	2,548	(2,834)	11,636	(7,956)
Comprehensive Income	$ 8,682	$ 2,568	$ 28,759	$ 5,617