Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Statements of Comprehensive (Loss) Income
Net income	$ 26,618	$ 30,554	$ 19,222
Available-for-sale debt securities:
Unrealized holding (losses) gains on available-for-sale debt securities	(69,828)	(8,669)	10,504
Reclassification adjustment for gains realized in income	(20)	(24)	(169)
Other comprehensive (loss) income on available-for-sale debt securities	(69,848)	(8,693)	10,335
Unfunded pension and postretirement obligations:
Changes from plan amendments and actuarial gains and losses	389	140	(49)
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost	(42)	(17)	(29)
Other comprehensive income (loss) on pension and postretirement obligations	347	123	(78)
Other comprehensive (loss) income before income tax	(69,501)	(8,570)	10,257
Income tax related to other comprehensive loss (income)	14,597	1,801	(2,153)
Net other comprehensive (loss) income	(54,904)	(6,769)	8,104
Comprehensive (loss) income	$ (28,286)	$ 23,785	$ 27,326