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Earnings Per Common Share and Share Awards (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Computation Of Basic And Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31:
(in thousands, except per share amounts) | 2023 |  | 2022
Net Income | $ | 21,686 |  |  | $ | 23,903 |
Weighted average common shares outstanding – Basic | 1,893 |  |  | 1,897 |
Incremental shares outstanding assuming the exercise of dilutive SARs (share-settled) | — |  |  | 1 |
Weighted average common shares outstanding – Diluted | 1,893 |  |  | 1,898 |
Basic earnings per common share | $ | 11.45 |  |  | $ | 12.60 |
Diluted earnings per common share | $ | 11.45 |  |  | $ | 12.59 |
Summary Of Share-Based Award Transactions | A summary of share-based award transactions for all share-based award plans follows:
(in thousands, except weighted average exercise price and average remaining contractual term) | Number Of Shares |  | Weighted Average Exercise Price |  | Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
Outstanding as of January 1, 2022 | 35 |  |  | $ | 150.36 |  |  | 3.96 |  | $ | 1,643 |
SARs granted | 10 |  |  | 155.16 |  |  |  |  |
SARs exercised | (6) |  |  | 94.44 |  |  |  |  |
Outstanding as of December 31, 2022 | 39 |  |  | $ | 159.39 |  |  | 4.10 |  | $ | 243 |
SARs granted | 5 |  |  | 142.88 |  |  |  |  |
SARs exercised | (2) |  |  | 93.87 |  |  |  |  |
Outstanding as of December 31, 2023 | 42 |  |  | $ | 160.83 |  |  | 3.69 |  | $ | 428 |
Exercisable as of December 31, 2023 | 34 |  |  | $ | 165.33 |  |  | 3.38 |  | $ | 265 |
Unvested as of December 31, 2023 | 8 |  |  | $ | 142.58 |  |  | 4.93 |  | $ | 163 |
Summary of Information of Fixed Stock Options | The following table summarizes information about SARs outstanding at December 31, 2023:
(in thousands, except exercise prices and average remaining contractual term) |  | SARs Outstanding at Year-End |  | SARs Exercisable at Year-End
Range of Exercise Prices |  | Number Outstanding |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Number Exercisable |  | Weighted Average Exercise Price
$ | 60.00 |  |  | — |  | $ | 99.99 |  |  | — |  |  | 0.00 |  | $ | — |  |  | — |  |  | $ | — |
100.00 |  |  | — |  | 149.99 |  |  | 18 |  |  | 4.79 |  | 139.11 |  |  | 10 |  |  | 136.27 |
150.00 |  |  | — |  | 199.99 |  |  | 24 |  |  | 2.82 |  | 177.84 |  |  | 24 |  |  | 177.84 |
$ | 60.00 |  |  | — |  | $ | 199.99 |  |  | 42 |  |  | 3.69 |  | $ | 160.83 |  |  | 34 |  |  | $ | 165.33 |
Share-Based Valuation Assumptions | The weighted average fair values for the SARs issued during 2023 and 2022 were $55.52 and $62.60, respectively, and were estimated using the weighted average assumptions shown in the table below:
| 2023 |  | 2022
Expected life in years | 6.2 | - | 7.0 |  | 7.0
Volatility | 36.6% |  | 35.6%
Interest rate | 3.7% |  | 3.2%
Yield rate | 1.2% |  | 0.6%

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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