Stock-Based Compensation Plans (Schedule of Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense(1)	$ 724	$ 610	$ 475
Income tax benefit	156	131	102
Fair value of grants vested	622	506	407
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense(1)	1,053	895	781
Income tax benefit	226	192	168
Fair value of grants vested	1,014	901	772
Management Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense(1)	124	104	71
Income tax benefit	27	22	15
Fair value of grants vested	87	70	110
Performance-based share units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense(1)	457	637	332
Income tax benefit	98	137	71
Fair value of grants vested	548	435	0
DCRP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense(1)	169	135	122
Income tax benefit	36	29	26
Fair value of grants vested	$ 174	$ 118	$ 129

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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