Comprehensive Income (Loss), Net of Tax - Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Before-Tax Amount
Other comprehensive income (loss)	$ (67,180)	$ 1,563	$ 7,446
Tax Expense (Benefit)
Other comprehensive income (loss)	17,178	(400)	(1,905)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(50,364)	1,016	5,187
Reclassification from AOCI, current period	362	147	354
Other Comprehensive (Loss) Income	(50,002)	1,163	5,541
Net Unrealized Securities Holding Losses Arising During the Period
Before-Tax Amount
OCI, before reclassifications	(64,774)	(8,616)	7,129
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	16,547	2,203	(1,823)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(48,227)	(6,413)	5,306
Reclassification from AOCI, current period	0	0	28
Other Comprehensive (Loss) Income	(48,227)	(6,413)	5,334
Reclassification Adjustment for Securities Losses Included in Net Income
Before-Tax Amount
Other comprehensive income (loss)			37
Tax Expense (Benefit)
Other comprehensive income (loss)			(9)
Net-of-Tax Amount
Other Comprehensive (Loss) Income			28
Net Unrealized Gains (Losses) on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	3,467	1,249	651
Reclassification from AOCI, current period	204	(126)
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	(885)	(320)	(166)
Reclassification from AOCI, current period	(52)	32
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	2,582	929	485
Reclassification from AOCI, current period	152	(94)	0
Other Comprehensive (Loss) Income	2,734	835	485
Net Actuarial Gain (Loss)
Before-Tax Amount
OCI, before reclassifications	(6,938)	8,733	(337)
Reclassification from AOCI, current period	56	91	227
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	1,791	(2,233)	86
Reclassification from AOCI, current period	(15)	(23)	(58)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(5,147)	6,500	(251)
Reclassification from AOCI, current period	41	68	169
Other Comprehensive (Loss) Income	(5,106)	6,568	(82)
Settlement Cost
Before-Tax Amount
Reclassification from AOCI, current period	577
Tax Expense (Benefit)
Reclassification from AOCI, current period	(149)
Net-of-Tax Amount
Reclassification from AOCI, current period	428
Net Prior Service (Cost) Credit
Before-Tax Amount
OCI, before reclassifications			(472)
Reclassification from AOCI, current period	228	232	211
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax			119
Reclassification from AOCI, current period	(59)	(59)	(54)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	428	0	(353)
Reclassification from AOCI, current period	169	173	157
Other Comprehensive (Loss) Income	$ 597	$ 173	$ (196)