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Taxes on Income - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2016 | Jan. 02, 2016
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Income Tax Expense Benefit Continuing Operations [Line Items] |  |
Uncertain tax positions included in unrecognized tax benefits |  | $ 1.2
Forecast [Member] |  |
Income Tax Expense Benefit Continuing Operations [Line Items] |  |
Impact of unrecognized tax benefits settlement on effective tax rate | $ 0.8 |

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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 + Details
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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 + Details
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