Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax	$ 6,680	$ 5,792	$ 34,421	$ 26,674
Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax	(95,714)	21,153	40,690	17,539
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	0	(206)	(698)	(454)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(102,394)	15,155	5,571	$ (9,589)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	876	(26,875)	8,675
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax	(116,867)	(19,537)	25,747
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	154	492	(244)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(117,589)	7,830	16,828
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax	(12)	1,754	928
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	0	2,596
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	52	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(40)	(1,754)	1,668
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	888	(28,629)	7,747
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	(116,867)	(19,537)	23,151
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	206	492	(244)
Other Comprehensive Income (Loss), Net of Tax	(117,549)	9,584	15,160
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0	2,235	1,190
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax	(3)	466	247
Gain (Loss) on Sale of Investments	0	0	3,286
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	0	0	(3,286)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0	(690)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax	(1,109)	34,019	(10,981)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(15)	(15)	(15)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	(15)	2,220	1,175
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	$ 14	$ 0	$ 0
OCI, Cash Flow Hedge, Reclassification for Discontinuance, Statement of Income or Comprehensive Income [Extensible Enumeration]	Miscellaneous	Miscellaneous	Miscellaneous
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	$ 0	$ 0	$ (3,286)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 0	$ 0	$ (2,596)