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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 | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 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 | 5 | 5 | 5 | 5 |
Number Of Shares, SARS exercised |  |  | (4) | (6) |
Number Of Shares, Outstanding Ending Balance | 36 |  | 36 | 35 | 36
Number Of Shares, Exercisable as of June 30, 2022 | 27 |  | 27 |  |
Number Of Shares, Unvested as of June 30, 2022 | 9 |  | 9 |  |
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 |  |  | 166.90 | 184.26 |
Weighted Average Exercise Price, SARS exercised |  |  | 89.23 | 106.71 |
Weighted Average Exercise Price, Outstanding Ending Balance | $ 159.32 |  | 159.32 | $ 150.36 | $ 139.16
Weighted Average Exercise Price, Exercisable as of June 30, 2022 | 161.95 |  | 161.95 |  |
Weighted Average Exercise Price, Unvested as of June 30, 2022 | $ 151.27 |  | $ 151.27 |  |
Average Remaining Contractual Term, Outstanding Beginning Balance |  |  | 4 years 1 month 28 days | 3 years 11 months 15 days | 4 years 4 months 17 days
Average Remaining Contractual Term, Outstanding Ending Balance |  |  | 4 years 1 month 28 days | 3 years 11 months 15 days | 4 years 4 months 17 days
Average Remaining Contractual Term, Exercisable as of June 30, 2022 |  |  | 3 years 7 months 24 days |  |
Average Remaining Contractual Term, Unvested as of June 30, 2022 |  |  | 5 years 8 months 23 days |  |
Aggregate Intrinsic Value, Outstanding Beginning Balance |  |  | $ 1,643 | $ 903 |
Aggregate Intrinsic Value, Outstanding Ending Balance | $ 407 |  | 407 | $ 1,643 | $ 903
Aggregate Intrinsic Value, Exercisable as of June 30, 2022 | 324 |  | 324 |  |
Aggregate Intrinsic Value, Unvested as of June 30, 2022 | $ 83 |  | $ 83 |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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