Earnings Per Common Share and Summary of Share-Based Award Transactions (Details) - SARs - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, SARS, Outstanding [Roll Forward]
Number Of Shares, Outstanding Beginning Balance	35	36
Number Of Shares, SARs granted	10	5
Number Of Shares, SARs exercised	(6)	(6)
Number Of Shares, Outstanding Ending Balance	39	35	36
Number Of Shares, Exercisable as of December 31, 2022	28
Number Of Shares, Unvested as of December 31, 2022	11
Share-based Compensation Arrangement by Share-based Payment Award, SARS, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Outstanding Beginning Balance	$ 150.36	$ 139.16
Weighted Average Exercise Price, SARs granted	155.16	184.26
Weighted Average Exercise Price, SARs exercised	94.44	106.71
Weighted Average Exercise Price, Outstanding Ending Balance	159.39	$ 150.36	$ 139.16
Weighted Average Exercise Price, Exercisable as of December 31, 2022	164.86
Weighted Average Exercise Price, Unvested as of December 31, 2022	$ 145.29
Average Remaining Contractual Term, Outstanding Beginning Balance	4 years 1 month 6 days	3 years 11 months 15 days	4 years 4 months 17 days
Average Remaining Contractual Term, Exercisable as of December 31, 2022	3 years 5 months 23 days
Average Remaining Contractual Term, Unvested as of December 31, 2022	5 years 8 months 4 days
Aggregate Intrinsic Value, Outstanding Beginning Balance	$ 1,643	$ 903
Aggregate Intrinsic Value, Outstanding Ending Balance	243	$ 1,643	$ 903
Aggregate Intrinsic Value, Exercisable as of December 31, 2022	197
Aggregate Intrinsic Value, Unvested as of December 31, 2022	$ 46