XML 46 R37.htm IDEA: XBRL DOCUMENT v3.23.1
Earnings Per Common Share And Share Awards Summary Of Share-Based Award Transactions (Details) - SARs - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, SARS, Outstanding [Roll Forward]        
Number of shares, outstanding beginning balance 39 35 35  
Number of shares, SARs granted 1 0 10  
Number Of Shares, SARS exercised (2)   (6)  
Number of shares, outstanding ending balance 38   39 35
Number of shares, exercisable as of March 31, 2023 29      
Number of shares, unvested as of March 31, 2023 9      
Weighted average exercise price, exercisable as of March 31, 2023 $ 169.40      
Weighted average exercise price, unvested as of March 31, 2023 143.36      
Share-based Compensation Arrangement by Share-based Payment Award, SARs, Outstanding, Weighted Average Exercise Price [Roll Forward]        
Weighted average exercise price, outstanding beginning balance 159.39 $ 150.36 $ 150.36  
Weighted average exercise price, SARs granted 159.58   155.16  
Weighted average exercise price, SARS exercised 93.87   94.44  
Weighted average exercise price, outstanding ending balance $ 163.31   $ 159.39 $ 150.36
Average remaining contractual term, outstanding beginning balance 4 years 1 month 13 days   4 years 1 month 6 days 3 years 11 months 15 days
Average remaining contractual term, outstanding ending balance 4 years 1 month 13 days   4 years 1 month 6 days 3 years 11 months 15 days
Average remaining contractual term, exercisable as of March 31, 2023 3 years 8 months 8 days      
Average remaining contractual term, unvested as of March 31, 2023 5 years 6 months 3 days      
Aggregate intrinsic value, outstanding beginning balance $ 243 $ 1,643 $ 1,643  
Aggregate intrinsic value, outstanding ending balance 171   $ 243 $ 1,643
Aggregate intrinsic value, exercisable as of March 31, 2023 104      
Aggregate intrinsic value, unvested as of March 31, 2023 $ 67