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Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 30, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 30, 2018	Dec. 29, 2018
Lessee Lease Description [Line Items]
Operating lease assets			$ 146,063			$ 0
Operating lease liabilities			$ 155,913
Lease weighted average remaining lease term			7 years 2 months 4 days
Operating leases, rent expense		$ 10,837		$ 32,369
Minimum
Lessee Lease Description [Line Items]
Leases, remaining lease term			0 years
Maximum
Lessee Lease Description [Line Items]
Leases, remaining lease term			13 years
ASU 2016-02
Lessee Lease Description [Line Items]
Operating lease assets					$ 155,178
Operating lease liabilities					163,486
Retained earnings for operating leases					$ 0
Prepaid Rent | ASU 2016-02
Lessee Lease Description [Line Items]
Revised prepaid rent	$ 3,595

X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

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-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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- Definition

Lease weighted average remaining lease term.

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- Definition

Lessee remaining lease term.

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