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Earnings Per Common Share and Share Awards (Tables) | 12 Months Ended
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Dec. 31, 2022
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) | 2022 |  | 2021
Net Income | $ | 23,903 |  |  | $ | 67,020 |
Weighted average common shares outstanding – Basic | 1,897 |  |  | 1,894 |
Incremental shares outstanding assuming the exercise of dilutive SARs (share-settled) | 1 |  |  | 6 |
Weighted average common shares outstanding – Diluted | 1,898 |  |  | 1,900 |
Basic earnings per common share | $ | 12.60 |  |  | $ | 35.38 |
Diluted earnings per common share | $ | 12.59 |  |  | $ | 35.28 |
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, 2021 | 36 |  |  | $ | 139.16 |  |  | 4.38 |  | $ | 903 |
SARs granted | 5 |  |  | 184.26 |  |  |  |  |
SARs exercised | (6) |  |  | 106.71 |  |  |  |  |
Outstanding as of December 31, 2021 | 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 |
Exercisable as of December 31, 2022 | 28 |  |  | $ | 164.86 |  |  | 3.48 |  | $ | 197 |
Unvested as of December 31, 2022 | 11 |  |  | $ | 145.29 |  |  | 5.68 |  | $ | 46 |
Summary of Information of Fixed Stock Options | The following table summarizes information about SARs outstanding at December 31, 2022:
(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 |  |  | 2 |  |  | 0.38 |  | $ | 93.87 |  |  | 2 |  |  | $ | 93.87 |
100.00 |  |  | — |  | 149.99 |  |  | 14 |  |  | 5.28 |  | 138.79 |  |  | 4 |  |  | 129.43 |
150.00 |  |  | — |  | 199.99 |  |  | 23 |  |  | 3.74 |  | 178.44 |  |  | 22 |  |  | 179.04 |
$ | 60.00 |  |  | — |  | $ | 199.99 |  |  | 39 |  |  | 4.10 |  | $ | 159.39 |  |  | 28 |  |  | $ | 164.86 |
Share-Based Valuation Assumptions | The weighted average fair values for the SARs issued during 2022 and 2021 were $62.60 and $59.83, respectively, and were estimated using the weighted average assumptions shown in the table below:
| 2022 |  | 2021
Expected life in years | 7.0 |  | 7.0
Volatility | 35.6% |  | 33.9%
Interest rate | 3.2% |  | 1.3%
Yield rate | 0.6% |  | 1.1%

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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