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Shareholders' Equity - Stock Repurchase Program (Details) - $ / shares | Feb. 17, 2021 | Dec. 31, 2022 | Dec. 31, 2021
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Equity, Class of Treasury Stock [Line Items] |  |  |
Common stock, shares authorized (in shares) |  | 24,000,000 | 24,000,000
Common stock, par value (in dollars per share) |  | $ 1 | $ 1
First Share Repurchase Program |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Period for shares to be repurchased | 24 months |  |
Amended Share Repurchase Program |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Number of shares authorized to be repurchased (in shares) | 790,383 | 679,979 |

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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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