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Earnings Per Common Share and Share Awards (Tables)
 12 Months Ended
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)20232022
Net Income $21,686 $23,903 
Weighted average common shares outstanding – Basic1,893 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 granted10 155.16   
SARs exercised(6)94.44 
Outstanding as of December 31, 202239 $159.39 4.10$243 
SARs granted5 142.88   
SARs exercised(2)93.87   
Outstanding as of December 31, 202342 $160.83 3.69$428 
Exercisable as of December 31, 202334 $165.33 3.38$265 
Unvested as of December 31, 20238 $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-EndSARs Exercisable at Year-End
Range of Exercise PricesNumber
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 4.79139.11 10 136.27 
150.00 —199.99 24 2.82177.84 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:
20232022
Expected life in years6.2-7.07.0
Volatility36.6%35.6%
Interest rate3.7%3.2%
Yield rate1.2%0.6%