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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 |  |

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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 -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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