Aggregate number of common shares previously reserved for issuance.

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Days per share closing market price as reported on regulatory market

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Aggregate number of common shares reserved for future issuance.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Subparagraph h

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-Name Accounting Standards Codification

-Topic 718

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-Section 50

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-Subparagraph (i)

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

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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).

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- Definition

The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

+ References

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-Publisher FASB

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-Number 123R

-Paragraph A240

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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.

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- Definition

The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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

-Publisher FASB

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Share-based Payment Arrangements (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 24, 2011	Sep. 25, 2010	Dec. 25, 2010
The weighted average grant date fair value of stock options granted	$ 12.06	$ 12.00
Total intrinsic value of stock options exercised during periods	$ 983,000	$ 9,115,000
Stock options outstanding	2,350,576		2,295,831
Stock options exercisable	1,110,143
Closing market price	$ 38.51
ESOSIP [Member]
Common stock previously reserved for issuance	2,239,117
2011 EIP [Member]
Common stock authorized for issuance	6,000,000
Stock Option [Member]
Total unrecognized compensation cost related to non-vested stock options granted under the plans	9,349,000
Unrecognized compensation cost related to these non-vested options is expected to be recognized over period, years	2.8
Restricted Stock [Member]
Total unrecognized compensation cost related to non-vested stock options granted under the plans	1,400,000
Unrecognized compensation cost related to these non-vested options is expected to be recognized over period, years	2.3
Directors Stock Compensation Plan [Member]
Common stock reserved for issuance	118,959
Other Stock Compensation Plan [Member]
Common stock reserved for issuance	8,336,576
Out Of The Money [Member]
Stock options outstanding	1,788,462
Stock options exercisable	800,429
In The Money [Member]
Stock Options Outstanding, Aggregate Intrinsic Value	2,805,000
Intrinsic value of stock options exercisable	$ 2,412,000