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Schedule of Fair Value of Notes (Detail) - USD ($) $ in Thousands	Oct. 06, 2018	Dec. 30, 2017
2026 Notes
Fair Value Disclosures [Line Items]
Carrying Value	$ 395,418	$ 394,978
2026 Notes | Level 2 Inputs
Fair Value Disclosures [Line Items]
Fair Value	369,039
2022 Notes
Fair Value Disclosures [Line Items]
Carrying Value	398,312	$ 397,941
2022 Notes | Level 2 Inputs
Fair Value Disclosures [Line Items]
Fair Value	$ 405,721

X

- Definition

Fair value disclosures.

+ References

No definition available.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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X

- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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