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Taxes on Income - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Income Tax Expense Benefit Continuing Operations [Line Items]
Uncertain tax positions included in unrecognized tax benefits		$ 1.3us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Forecast [Member]
Income Tax Expense Benefit Continuing Operations [Line Items]
Impact of unrecognized tax benefits settlement on effective tax rate	$ 0.8us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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