Stock-Based Compensation - Fair Value of Stock Options Estimated at Grant Date (Detail) (USD $)	3 Months Ended	6 Months Ended
Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average expected term (years)	5 years	5 years	5 years	5 years
Risk-free interest rate	1.65%	0.65%	1.58%	0.68%
Dividend rate
Volatility	44.00%	61.00%	46.00%	61.00%
Forfeiture rate	4.00%	3.00%	4.00%	3.00%
Estimated weighted-average fair value per stock option	$ 2.37	$ 4.97	$ 2.42	$ 5.13

Compensation Expense Assumed Forfeiture Rate

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- Definition

Fair Value Assumptions Estimated Future Prices

+ References

No definition available.

+ Details

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- Details

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

+ Details

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

+ Details

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