Long Term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Apr. 04, 2020	Dec. 28, 2019
Debt Instrument [Line Items]
Long-term debt	$ 429,000	$ 379,000
Fees, costs, discount and premium	(7,797)	(10,029)
Long-term debt, net	421,203	368,971
2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term debt	64,000
2016 Credit Agreement [Member] \| Term Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt	64,000	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.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 4
-Subparagraph (b)(3)
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