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Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Debt Instrument [Line Items]
Finance lease obligations	$ 273,222	$ 198,011
Total debt, gross	594,010	671,181
Unamortized debt issuance costs	(10,004)	(12,555)
Long-term debt	584,006	658,626
Less: current maturities of long-term debt	7,004	8,662
Long-term debt, net of current maturities	577,002	649,964
Term Loan | Secured debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 57,813	$ 146,674
Weighted average interest rate	8.00%	8.70%
Revolving Credit Facility | Line of credit
Debt Instrument [Line Items]
Long-term debt, gross	$ 262,975	$ 326,496
Weighted average interest rate	2.50%	3.90%

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- Definition

Long-term Debt, Gross And Lease Obligation

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

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Weighted average interest rate of debt outstanding.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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