Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 6,028	$ 3,615	$ 12,815	$ 7,320
Investment securities available-for-sale:
Net unrealized gains (losses)	246	1,296	(6,141)	6,785
Income tax effect	(61)	(325)	1,543	(1,704)
Reclassification adjustments for net (gains) losses realized in net income		2	(7)	48
Income tax effect		(1)	2	(12)
Other comprehensive income (loss), net of tax	185	972	(4,603)	5,117
Comprehensive income	$ 6,213	$ 4,587	$ 8,212	$ 12,437