Equity Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
Mar. 29, 2013	Mar. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock and Stock Appreciation Rights Expiration (in years)	10
Number of shares for equity-based compensation grants approved by shareholders	53,889,977
Number of shares for equity-based compensation approved by shareholders available for grant	14,583,738
Unrecognized equity-based compensation cost	$ 10,900,000
Weighted average period for equity-based compensation recognition, years	1 year 7 months 6 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair market value of restricted stock vested	$ 2.1
Equity-based compensation granted, grant date weighted average fair value	$ 2.09	$ 3.99
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation granted, grant date weighted average fair value	$ 2.20	$ 3.99
Performance stock units granted	5,282,045	1,877,064
Shares issued for each PSU granted, maximum	1
Performance stock units \| Awards Granted during Twenty Twelve
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares vested and issued for performance stock units	255,573
Shares earned per performance stock unit	1
The percentage of performance stock units earned for performance stock units granted in 2012	100.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based grants vesting period	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based grants vesting period	3 years
Majority
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based grants vesting period	3 years

The number of common shares vested and issued for performance stock units granted.

No definition available.

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- Definition

The percentage of performance stock units earned for performance stock units granted in 2012.

+ References

No definition available.

+ Details

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- Definition

Performance stock units granted.

+ References

No definition available.

+ Details

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- Definition

Expiration of stock options and stock appreciation rights In years.

+ References

No definition available.

+ Details

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- Definition

Shares earned per performance stock unit granted in 2012.

+ References

No definition available.

+ Details

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- Definition

Shares issued for each PSU granted, maximum

+ References

No definition available.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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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

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

+ 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 Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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