Share-based Compensation Plans - Share-based compensation expense (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Plans
Total cost of share-based payment plans during the year	$ 365	$ 300
Amount of related income tax benefit recognized in income	90	71
Restricted Stock
Share-based Compensation Plans
Total cost of share-based payment plans during the year	219	173
Stock Options
Share-based Compensation Plans
Total cost of share-based payment plans during the year	$ 146	$ 127

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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+ References

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