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Stock Plans and Management Compensation (Details 2) - Stock Options and SAR's [Member] - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 23.41 | $ 23.79 | $ 21.57 | $ 16.04
Age of Grantee | 62 years |  |  |

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- Definition Grantee continues to vest in SARs in accordance with vesting schedule even upon termination if the employee has reached this age + References No definition available. + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock 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)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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