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Earnings Per Common Share and Share Awards (Tables)
 12 Months Ended
Dec. 31, 2021
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)20212020
Net income$67,020 $39,420 
Weighted average common shares outstanding – Basic1,894 1,892 
Incremental shares outstanding assuming the exercise of dilutive SARs (share-settled)6 4 
Weighted average common shares outstanding – Diluted
1,900 1,896 
Basic earnings per common share$35.38 $20.84 
Diluted earnings per common share$35.28 $20.80 
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, 202030 $124.13 3.53$1,352 
SARs granted14 137.40   
SARs exercised(8)75.75 
Outstanding as of December 31, 202036 $139.16 4.38$903 
SARs granted5 184.26   
SARs exercised(6)106.71   
Outstanding as of December 31, 202135 $150.36 3.96$1,643 
Exercisable as of December 31, 202128 $151.17 3.51$1,269 
Unvested as of December 31, 20217 $147.41 5.59$374 
Summary of Information of Fixed Stock Options The following table summarizes information about SARs outstanding at December 31, 2021:
(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 6 0.88$83.44 6 $83.44 
100.00 —149.99 11 5.45134.89 5 126.00 
150.00 —199.99 18 4.09181.27 17 181.07 
$60.00 —$199.99 35 3.96$150.36 28 $151.17 
Share-Based Valuation Assumptions The weighted average fair values for the SARs issued during 2021 and 2020 were $59.83 and $36.30, respectively, and were estimated using the weighted average assumptions shown in the table below:
20212020
Expected life in years7.0-7.06.2-7.0
Volatility33.9%29.4%
Interest rate1.3%0.7%
Yield rate1.1%1.2%