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Share Based Payment Arrangements - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended |  | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended |  | 9 Months Ended
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Sep. 27, 2014 | Sep. 28, 2013 | Sep. 27, 2014 EquityPlan CompensationPlan | Sep. 28, 2013 | Sep. 27, 2014 2013 Directors Stock Compensation Plan | Sep. 27, 2014 Restricted Stock Units (RSUs) | Sep. 28, 2013 Restricted Stock Units (RSUs) | Jan. 23, 2013 Restricted Stock Units (RSUs) Chairman and Chief Executive Officer | Sep. 27, 2014 Restricted Stock Units (RSUs) Maximum | Jan. 23, 2013 Restricted Stock Units (RSUs) Maximum Chairman and Chief Executive Officer | Sep. 27, 2014 Other Stock Compensation Plans | Sep. 27, 2014 Employee Stock Option | Sep. 28, 2013 Employee Stock Option | Sep. 27, 2014 Non-vested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employee equity incentive plans |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Number of board of director stock compensation plans |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Common stock authorized for issuance |  |  |  |  | 115,000 |  |  |  |  |  |  |  |  |
Income tax benefit realized on disqualifying dispositions of stock acquired by exercise of incentive stock options | $ 119,000 | $ 61,000 | $ 583,000 | $ 478,000 |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance |  |  |  |  | 95,531 |  |  |  |  |  | 6,078,033 |  |  |
The weighted average grant date fair value of stock options granted |  |  |  |  |  |  |  |  |  |  |  | $ 12.70 | $ 14.21 |
Total intrinsic value of stock options exercised during periods |  |  |  |  |  |  |  |  |  |  |  | 9,421,000 | 6,021,000 |
Unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  | 3,384,000 |  |
Unrecognized compensation cost expected to be recognized over period, years |  |  |  |  |  | 3 years 1 month 6 days |  |  |  |  |  | 2 years 4 months 24 days |  | 2 years 1 month 6 days
Unrecognized compensation cost |  |  |  |  |  |  |  |  | 19,200,000 |  |  |  |  | 943,000
Discount rate on stock awards |  |  |  |  |  | 7.00% | 7.00% |  |  |  |  |  |  |
RSU awards vesting period |  |  |  |  |  |  |  |  | 5 years | 3 years |  |  |  |
Percentage used in calculation to determine vesting |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |
Awards issued |  |  |  |  |  | 146,000 |  | 100,000 |  |  |  |  |  | 7,124
Recognized share-based compensation expense |  |  |  |  |  | $ 2,434,000 | $ 1,332,000 |  |  |  |  |  |  |

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- Definition Number Of Employee Equity Incentive Plans + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Percentage Used In Calculation To Determine Vesting + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Aggregate number of common shares reserved for future issuance. + 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 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References No definition available. + Details
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. + References No definition available. + Details
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- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. + 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 (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Restrictions on equity-based instruments during the vesting period, such as the inability to transfer unvested awards, are not taken into account in estimating the fair value of the award. However, restrictions that remain in effect after an award is vested, such as the inability to transfer or hedge vested options or a prohibition on the sale of outstanding vested shares (or other type of equity) for a period of time, affect the estimate of an award's fair value. + 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 (f)(2)(v) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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