Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Oct. 03, 2020	Oct. 03, 2020	Dec. 31, 2019
Assets [Abstract]
Held-to-maturity Securities Transferred		$ 0	$ 0
Held-to-maturity Securities, Unrecognized Holding Gain	$ 0	0	0
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	0		0
Held-to-maturity Securities, Unrecognized Holding Loss	0	0	0
Liabilities [Abstract]
Long-term debt, fair value	460,500	460,500	632,200
Carrying value of long-term debt, excluding derivative liabilities	404,539	404,539	515,931
Derivative, Notional Amount	100,000	100,000
Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	54,972	54,972	52,148
Available for sale securities	4,643	4,643	4,405
Fair value assets	59,615	59,615	56,553
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	37,029	37,029	34,280
Available for sale securities	4,643	4,643	4,405
Fair value assets	41,672	41,672	38,685
Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	17,943	17,943	17,868
Available for sale securities	0	0	0
Fair value assets	17,943	17,943	17,868
Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Assets held in rabbi trusts	0	0	0
Available for sale securities	0	0	0
Fair value assets	$ 0	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of investment in debt security, measured at amortized cost, transferred to investment in debt security, measured at fair value, with change in fair value recognized in other comprehensive income (available-for-sale) and net income (trading).

+ References

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Nominal or face amount used to calculate payment on derivative.

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount, before tax, of other-than-temporary impairment (OTTI) on investment in debt security measured at amortized cost (held-to-maturity), recognized in earnings and other comprehensive income (OCI).

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The carrying value of long-term debt, excluding the derivative liability.

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Fair value as of the balance sheet date of assets held in rabbi trusts to fund payments under deferred compensation and non-qualified pension plans.

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