Debt Obligations - Debt & Capital Leases (Details) - USD ($) $ in Thousands	Sep. 29, 2019	Dec. 30, 2018	Sep. 30, 2018
Debt Instrument [Line Items]
Capital Lease Obligations, Current		$ 6,832
Total short-term debt and finance lease obligations	$ 246,208	253,630
Change In Repurchase Price	4,700
Option To Repurchase Headquarters Building 2019
Debt Instrument [Line Items]
Principal amount	245,339	250,000
Less unamortized (premium)/discount based on imputed interest rate of 12.0% in 2019 and 13.0% in 2018	(869)	3,202
Net option to repurchase ownership interest in headquarters building in 2019	$ 246,208	$ 246,798
Imputed interest rate (as a percent)	12.00%		13.00%

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- Definition

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, including portion classified as current.

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