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Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option compensation costs	$ 0.1	$ 0.2
Unrecognized total compensation related to unvested stock options	0.1
Weighted average period of time over cost recognized	1 year
Aggregate intrinsic value of in-the-money options outstanding	3.3
Aggregate intrinsic value of options exercisable	3.3
Restricted stock awards	584,000	557,500
Compensation expense related to restricted stock grants	0.6	1.3
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vest with respect to each recipient	2 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vest with respect to each recipient	5 years
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards	584,000
Unrecognized total compensation cost related to unvested restricted stock	$ 16.6
Unrecognized total compensation cost related to unvested restricted stock end period	2016

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- Definition

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Year

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- Definition

Share based compensation arrangement by share based payment award unvested stock options awards weighted average period in years.

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F



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- Definition

Aggregate unrecognized cost of share-based awards, other than options, made to employees under an equity-based compensation plan, that have yet to vest.

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Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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-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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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.

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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).

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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