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Common and Preferred Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 01, 2019 | Aug. 07, 2019
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |  |  |
AcceleratedShareRepurchaseProgramRepurchaseAmount |  |  |  |  |  | $ 150.0
Accelerated Share Repurchases, Cash or Stock Settlement | 2,432,336 |  |  |  |  |
Common stock dividend rate percentage |  | 5.00% |  |  |  |
Common stock, par value |  | $ 5 | $ 5 |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) |  | 302,000 | 373,000 | 246,000 |  |
Shares available for purchase under the current Board authorization |  |  |  |  | 5,000,000 |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  | 3,544,579 |  |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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