Stock Plans and Management Compensation (Details 2) - Stock Options and SAR's [Member] - $ / shares |
12 Months Ended | |||
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Dec. 31, 2020 |
Dec. 31, 2021 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| 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 No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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- Details
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