Earnings Per Common Share And Share Awards (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Earnings Per Common Share And Share Awards [Line Items]
Anti-dilutive shares excluded from computation of diluted earnings per share	23	24
Number of SARs granted where exercise price was less than market price on date of grant	0	0
SARs
Earnings Per Common Share And Share Awards [Line Items]
Share-based compensation arrangement by share-based payment award, grants in period, net of forfeitures	0	1	5
Share-based payment arrangement, expense	$ 96	$ 159
Share-based payment arrangement, nonvested award, cost not yet recognized, amount	$ 311
Maximum \| SARs
Earnings Per Common Share And Share Awards [Line Items]
Share-based compensation arrangement by share-based payment award, shares purchased for award	250
SARs expiration period	7 years
SARs vesting period	5 years

Earnings Per Common Share And Share Awards [Line Items]

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- Definition

Number of stock options or SARs granted where exercise price was less than market price on date of grant.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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- Definition

Net number of share options (or share units) granted during the period.

+ References

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- Definition

Number of shares purchased for issuance under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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