Long Term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019
Debt Instrument [Line Items]
Long-term debt	$ 419,000	$ 379,000
Fees, costs, premium and discount	(6,902)	(10,029)
Long-term debt, net, less current portion	412,098	368,971
2016 Credit Agreement Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt	54,000
2016 Credit Agreement Due 2022 [Member] \| Term Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt	54,000	64,000
2018 Senior Notes Due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 365,000	$ 315,000

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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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 classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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