Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income, Before tax amount	$ 3,996	$ 4,820	$ 8,530	$ 11,143
Net unrealized holding (losses) gains on available-for-sale securities:
Unrealized holding (losses) gains arising during the period, Before tax amount	(26,768)	3,393	(73,099)	(4,613)
Reclassification adjustment for gains included in net income, Before tax amount	(3)	(2)	(4)	(5)
Other comprehensive (loss) income, Before tax amount	(26,771)	3,391	(73,103)	(4,618)
Unrealized holding (losses) gains arising during the period, Tax expense (benefit)	(5,620)	712	(15,351)	(969)
Reclassification adjustment for gains included in net income, Tax expense (benefit)	(1)		(1)	(1)
Other comprehensive (loss) income, Tax expense (benefit)	(5,621)	712	(15,352)	(970)
Unrealized holding (losses) gains arising during the period, Net of tax amount	(21,148)	2,681	(57,748)	(3,644)
Reclassification adjustment for gains included in net income, Net of tax amount	(2)	(2)	(3)	(4)
Other comprehensive (loss) income, Net of tax amount	(21,150)	2,679	(57,751)	(3,648)
Total comprehensive (loss) income, Before tax amount	(22,775)	8,211	(64,573)	6,525
Tax expense (benefit)	647	951	1,471	2,224
Total comprehensive (loss) income, Tax expense (benefit)	(4,974)	1,663	(13,881)	1,254
Net income	3,349	3,869	7,059	8,919
Total comprehensive (loss) income, Net of tax amount	$ (17,801)	$ 6,548	$ (50,692)	$ 5,271