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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015	Jan. 03, 2016	Apr. 03, 2016
Accounting Policies [Line Items]
Reporting period, minimum			364 days
Reporting period, maximum			371 days
Non-current deferred income taxes assets	$ 21,676,000		$ 21,676,000		$ 23,402,000
Estimated gift card redemption period			20 quarters
Recognized gift card breakage revenue	112,000	$ 112,000	$ 337,000	$ 335,000
Outstanding gift card liabilities	3,900,000		3,900,000		$ 4,900,000
Long-lived assets to be held and used	$ 500,000		500,000
Impairment charges			$ 0	$ 0
New Accounting Pronouncement, Early Adoption, Effect [Member]
Accounting Policies [Line Items]
Non-current deferred income taxes assets						$ 11,100,000
First Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods			91 days		91 days
Second Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods			91 days		91 days
Third Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods			91 days		91 days
Fourth Quarter [Member]
Accounting Policies [Line Items]
Interim reporting periods			91 days		98 days

X

- Definition

Accounting policies.

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The period of time over which gift card breakage is recognized.

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The maximum interim period for which financial information can be reported for the entity. Translates to a 13- or 14-week fiscal quarter, the latter of which can occur approximately every five years based upon the entity's calendar shift relative to the impact of a leap year on the entity's fiscal calendar and an extra day each year resulting from a 52-week fiscal year.

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The maximum period for which financial information can be reported for the entity. Translates to a 53-week fiscal year, which can occur approximately every five years based upon the entity's calendar shift relative to the impact of a leap year on the entity's fiscal calendar and an extra day each year resulting from a 52-week fiscal year.

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The minimum period for which financial information can be reported for the entity. Translates to a 52-week fiscal year.

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Carrying value as of the balance sheet date of the liability for outstanding gift cards. Retail customers purchase gift cards or gift certificates that can be redeemed at a later date for merchandise or services; those unredeemed represent a liability of the entity because the revenue is being deferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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-Publisher FASB
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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The amount of breakage recognized related to unredeemed gift cards. Breakage occurs when a customer pays in advance of vendor performance and does not demand full performance for various reasons.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
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