Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income, Before tax amount	$ 4,534	$ 6,323
Net unrealized holding (losses) gains on available-for-sale securities:
Unrealized holding (losses) gains arising during the period, Before tax amount	(46,331)	(8,006)
Reclassification adjustment for gains included in net income, Before tax amount	(1)	(3)
Other comprehensive (loss) income, Before tax amount	(46,332)	(8,009)
Unrealized holding (losses) gains arising during the period, Tax expense (benefit)	(9,731)	(1,681)
Reclassification adjustment for gains included in net income, Tax expense (benefit)		(1)
Other comprehensive (loss) income, Tax expense (benefit)	(9,731)	(1,682)
Unrealized holding (losses) gains arising during the period, Net of tax amount	(36,600)	(6,325)
Reclassification adjustment for gains included in net income, Net of tax amount	(1)	(2)
Other comprehensive (loss) income, Net of tax amount	(36,601)	(6,327)
Total comprehensive loss, Before tax amount	(41,798)	(1,686)
Tax expense (benefit)	824	1,273
Total comprehensive loss, Tax expense (benefit)	(8,907)	(409)
Net income	3,710	5,050
Total comprehensive income, Net of tax amount	$ (32,891)	$ (1,277)