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Retirement Plans (Schedule Of Costs Of Retirement Plan) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension Cost (Reversal of Cost) | $ 3,504 | $ 6,781 | $ 5,574
Retirement savings plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension Cost (Reversal of Cost) | 3,525 | 3,343 | 3,593
Deferred compensation plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension Cost (Reversal of Cost) | 508 | 813 | 788
Supplemental executive retirement plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension Cost (Reversal of Cost) | $ (529) | $ 2,625 | $ 1,193

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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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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Details
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