Comprehensive (Loss) Income - Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Before-Tax Amount
Other comprehensive (loss) income, before tax	$ (11,777)	$ 588	$ (40,185)	$ (2,474)
Tax (Expense) Benefit
Other comprehensive (loss) income, tax	3,010	(150)	10,274	632
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(8,833)	418	(30,004)	(1,919)
Reclassification from AOCI, current period	66	20	93	77
Other Comprehensive (Loss) Income	(8,767)	438	(29,911)	(1,842)
Unrealized Gains and Losses on Available for Sale Securities
Before-Tax Amount
OCI, before reclassifications	(13,045)	1,507	(43,000)	(3,614)
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	3,334	(385)	10,993	924
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(9,711)	1,122	(32,007)	(2,690)
Reclassification from AOCI, current period	0	0	0	0
Other Comprehensive (Loss) Income	(9,711)	1,122	(32,007)	(2,690)
Unrealized Loss on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	1,179	(946)	2,691	1,036
Reclassification from AOCI, current period	11	(30)	(18)	(58)
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	(301)	242	(688)	(265)
Reclassification from AOCI, current period	(3)	7	5	15
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	878	(704)	2,003	771
Reclassification from AOCI, current period	8	(23)	(13)	(43)
Other Comprehensive (Loss) Income	886	(727)	1,990	728
Amortization of Net Retirement Plan Actuarial Gain (Loss)
Before-Tax Amount
Reclassification from AOCI, current period	(29)	0	28	46
Tax (Expense) Benefit
Reclassification from AOCI, current period	8	0	(7)	(12)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	(21)	0	21	34
Other Comprehensive (Loss) Income	(21)	0	21	34
Amortization of Defined Benefit Pension, Prior-Service Costs
Before-Tax Amount
Reclassification from AOCI, current period	107	57	114	116
Tax (Expense) Benefit
Reclassification from AOCI, current period	(28)	(14)	(29)	(30)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	79	43	85	86
Other Comprehensive (Loss) Income	$ 79	$ 43	$ 85	$ 86

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