Changes in Accumulated Other Comprehensive (Loss) Balances (Schedule of Accumulated Other Comprehensive (Loss) Income ) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (8,492)
Other comprehensive loss:
Change in recognized net actuarial loss	$ 44	$ 24	93	$ 78
Tax effect on change in recognized net actuarial loss		(10)		(16)
Unrealized holding gains (losses) arising during the period	1,154	(2,362)	3,047	(11,189)
Tax effect on unrealized (gains) losses arising during the period		497		2,350
Reclassification adjustment for net investment (gains) losses included in net income	123	(503)	1,184	(526)
Tax effect on reclassification adjustment for net investment gains (losses) included in net income		106		110
Change in other comprehensive income (loss), net of tax	1,321	(2,248)	4,324	(9,193)
Ending Balance	(4,680)		(4,680)
Pension Asset (Liability)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(2,656)	(2,641)
Other comprehensive loss:
Change in recognized net actuarial loss			93	78
Tax effect on change in recognized net actuarial loss				(16)
Unrealized holding gains (losses) arising during the period			0	0
Tax effect on unrealized (gains) losses arising during the period				0
Reclassification adjustment for net investment (gains) losses included in net income			0	0
Tax effect on reclassification adjustment for net investment gains (losses) included in net income				0
Change in other comprehensive income (loss), net of tax			93	62
Ending Balance	(2,560)	(2,579)	(2,560)	(2,579)
Pension Asset (Liability) | Revision of Prior Period, Error Correction, Adjustment [Member]
Other comprehensive loss:
Ending Balance	3		3
Unrealized Gains (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(5,836)	1,606
Other comprehensive loss:
Change in recognized net actuarial loss			0	0
Tax effect on change in recognized net actuarial loss				0
Unrealized holding gains (losses) arising during the period			3,047	(11,189)
Tax effect on unrealized (gains) losses arising during the period				2,350
Reclassification adjustment for net investment (gains) losses included in net income			1,184	(526)
Tax effect on reclassification adjustment for net investment gains (losses) included in net income				110
Change in other comprehensive income (loss), net of tax			4,231	(9,255)
Ending Balance	(2,120)	(7,649)	(2,120)	(7,649)
Unrealized Gains (Loss) | Revision of Prior Period, Error Correction, Adjustment [Member]
Other comprehensive loss:
Ending Balance	(515)		(515)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(8,492)	(1,035)
Other comprehensive loss:
Change in recognized net actuarial loss			93	78
Tax effect on change in recognized net actuarial loss				(16)
Unrealized holding gains (losses) arising during the period			3,047	(11,189)
Tax effect on unrealized (gains) losses arising during the period				2,350
Reclassification adjustment for net investment (gains) losses included in net income			1,184	(526)
Tax effect on reclassification adjustment for net investment gains (losses) included in net income				110
Change in other comprehensive income (loss), net of tax			4,324	(9,193)
Ending Balance	(4,680)	$ (10,228)	(4,680)	$ (10,228)
Accumulated Other Comprehensive Income (Loss) | Revision of Prior Period, Error Correction, Adjustment [Member]
Other comprehensive loss:
Ending Balance	$ (512)		$ (512)