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Stock-Based Compensation - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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Sep. 26, 2014 | Sep. 27, 2013 | Sep. 26, 2014 | Sep. 27, 2013 | Sep. 26, 2014 Stock Options [Member] | Sep. 27, 2013 Stock Options [Member] | Sep. 26, 2014 Stock Options [Member] | Sep. 27, 2013 Stock Options [Member] | Jul. 29, 2014 Employee Stock Purchase Plan [Member] | Aug. 14, 2013 Employee Stock Purchase Plan [Member] | Sep. 26, 2014 Employee Stock Purchase Plan [Member] | Sep. 26, 2014 Employee Stock Purchase Plan [Member] | Sep. 26, 2014 Restricted Stock Units Outstanding [Member] | Sep. 27, 2013 Restricted Stock Units Outstanding [Member] | Sep. 26, 2014 Restricted Stock Units Outstanding [Member] | Sep. 27, 2013 Restricted Stock Units Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividend yield |  |  |  |  | 0.00% | 0.00% | 0.00% | 0.00% |  |  |  | 0.00% |  |  |  |
Weighted-average fair value per share of options granted | $ 2.48 | $ 3.02 | $ 2.36 | $ 2.51 |  |  |  |  |  |  |  |  |  |  |  |
Fair value of options vested | $ 600,000 | $ 800,000 | $ 2,600,000 | $ 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Total realized tax benefit |  |  | 194,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of restricted stocks fair value |  |  |  |  |  |  |  |  |  |  |  |  | 2,700,000 | 2,800,000 | 10,000,000 | 10,200,000
Discount percentage on purchase of stock |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |
Fair Value of stock purchase rights percentage of call option |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |
Value of stock purchase rights percentage of put option |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |
Weighted-average fair value per share other than option granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.55 |
Increase in authorized shares for ESPP |  |  | 350,000 |  |  |  |  |  | 1,000,000 | 1,000,000 |  |  |  |  |  |
Total unamortized stock-based compensation cost related to unvested stock options and restricted stock units | $ 17,100,000 |  | $ 17,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining weighted-average amortization period |  |  | 1 year 8 months 15 days |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition value of stock purchase right percentage of put option. + References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + 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 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 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 weighted average fair value at grant date for nonvested equity-based awards issued 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 Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + 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 estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + 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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- Definition Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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