Long-Term Debt - Summary of Debt Instruments (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019
Debt Instrument [Line Items]
Finance lease obligations	$ 43,632	$ 44,966
Other, 2.61% - 4.36%, due 2021 - 2026	6,707	8,633
Total debt - Principal	490,516	694,008
Unamortized debt issuance costs	(4,072)	(5,455)
Total debt - Principal	486,444	688,553
Less current portion	5,135	6,349
Total long-term debt	481,309	682,204
Senior Secured Revolving Credit Facility \| Revolving credit agreement [Member]
Debt Instrument [Line Items]
Senior secured revolving credit facility, due December 2023	$ 440,177	$ 640,409

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

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of long-term debt classified as other, payable after one year or the operating cycle, if longer.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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