Comprehensive Income (Loss), Net of Tax - Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Before-Tax Amount
Other comprehensive income (loss)	$ 1,563	$ 7,446	$ 9,993
Tax Expense (Benefit)
Other comprehensive income (loss)	(400)	(1,905)	(2,540)
Net-of-Tax Amount
Other comprehensive income before reclassifications	1,016	5,187	6,776
Reclassification from AOCI, current period	147	354	677
Other Comprehensive Income	1,163	5,541	7,453
Unrealized Gains and Losses on Available for Sale Securities
Before-Tax Amount
OCI, before reclassifications	(8,616)	7,129	5,580
Reclassification from AOCI, current period		37
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	2,203	(1,823)	(1,418)
Reclassification from AOCI, current period		(9)
Net-of-Tax Amount
Other comprehensive income before reclassifications	(6,413)	5,306	4,162
Reclassification from AOCI, current period	0	28	0
Other Comprehensive Income	(6,413)	5,334	4,162
Net Unrealized Gains on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	1,249	651
Reclassification from AOCI, current period	(126)
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	(320)	(166)
Reclassification from AOCI, current period	32
Net-of-Tax Amount
Other comprehensive income before reclassifications	929	485	0
Reclassification from AOCI, current period	(94)	0	0
Other Comprehensive Income	835	485	0
Net Actuarial Gain (Loss)
Before-Tax Amount
OCI, before reclassifications	8,733	(337)	3,505
Reclassification from AOCI, current period	91	227	684
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax	(2,233)	86	(891)
Reclassification from AOCI, current period	(23)	(58)	(174)
Net-of-Tax Amount
Other comprehensive income before reclassifications	6,500	(251)	2,614
Reclassification from AOCI, current period	68	169	510
Other Comprehensive Income	6,568	(82)	3,124
Net Prior Service (Cost) Credit
Before-Tax Amount
OCI, before reclassifications		(472)
Reclassification from AOCI, current period	232	211	224
Tax Expense (Benefit)
Other Comprehensive Income (Loss) before Reclassifications, Tax		119
Reclassification from AOCI, current period	(59)	(54)	(57)
Net-of-Tax Amount
Other comprehensive income before reclassifications	0	(353)	0
Reclassification from AOCI, current period	173	157	167
Other Comprehensive Income	$ 173	$ (196)	$ 167