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Stock-Based Compensation (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Stock Option Awards (Additional Textual) [Abstract]
Stock option compensation costs	$ 0.2	$ 0.3	$ 0.4	$ 0.6
Restricted stock awards			573,500	668,000
Compensation expense related to restricted stock grants			2.2	8.1
Weighted average period of time over which this cost will be recognized is approximately one year			1 year
Weighted average grant date fair value of stock options granted			$ 0
Aggregate intrinsic value of in-the-money options outstanding	2.6		2.6
Aggregate intrinsic value of option exercisable	2.5		2.5
Unrecognized total compensation cost related to unvested restricted stock	0.2		0.2
Minimum [Member]
Stock Option Awards (Textual) [Abstract]
Awards vest with respect to each recipient			2 years
Maximum [Member]
Stock Option Awards (Textual) [Abstract]
Awards vest with respect to each recipient			5 years
Restricted Stock [Member]
Stock Option Awards (Textual) [Abstract]
Recognized tax benefits regard to restricted stock			0.3	2.1
Unrecognized total compensation cost related to unvested restricted stock	$ 13.9		$ 13.9
Stock Option Awards (Additional Textual) [Abstract]
Restricted stock awards			573,500

X

- Definition

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

+ References

No definition available.

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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

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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.

+ References

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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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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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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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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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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Tax benefits realized from the exercise of stock options resulting in reductions in the entity's income taxes, which increases net cash provided by operating activities.

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