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Summary Stock Options Outstanding and Exercisable (Detail) | 12 Months Ended
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Dec. 30, 2017 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding | shares | 189,040
Options Exercisable | shares | 169,240
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 3 years 10 months 25 days
Options Exercisable, Weighted Average Contractual Life (Years) | 3 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price per Share | $ 49.34
Options Exercisable, Weighted Average Exercise Price | 48.50
Range One |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 35.64
Maximum Exercise Price | $ 40.00
Options Outstanding | shares | 15,400
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 1 year 7 months 6 days
Options Outstanding, Weighted Average Exercise Price per Share | $ 36.46
Range Two |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 40.01
Maximum Exercise Price | $ 45.00
Options Outstanding | shares | 49,250
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 3 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price per Share | $ 41.76
Range Three |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 45.01
Maximum Exercise Price | $ 58.06
Options Outstanding | shares | 124,390
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 4 years 6 months
Options Outstanding, Weighted Average Exercise Price per Share | $ 53.93
Range Four |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 35.64
Maximum Exercise Price | $ 40.00
Options Exercisable | shares | 15,400
Options Exercisable, Weighted Average Contractual Life (Years) | 1 year 7 months 6 days
Options Exercisable, Weighted Average Exercise Price | $ 36.46
Range Five |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 40.01
Maximum Exercise Price | $ 45.00
Options Exercisable | shares | 49,250
Options Exercisable, Weighted Average Contractual Life (Years) | 3 years 1 month 6 days
Options Exercisable, Weighted Average Exercise Price | $ 41.76
Range Six |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Minimum Exercise Price | 45.01
Maximum Exercise Price | $ 56.40
Options Exercisable | shares | 104,590
Options Exercisable, Weighted Average Contractual Life (Years) | 4 years 4 months 24 days
Options Exercisable, Weighted Average Exercise Price | $ 53.45

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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