Stock-Based Compensation (Details 1) (USD $)	6 Months Ended	12 Months Ended
Jun. 24, 2012	Dec. 25, 2011	Dec. 26, 2010
Summary of stock option activity
Outstanding, vested and exercisable, Number of Options		57,509
Outstanding , Weighted Average Exercise Price		$ 394.50
Granted, Number of Options
Granted, Weighted Average Exercise Price
Exercised, Number of Options
Exercised, Weighted Average Exercise Price
Forfeited, Number of Options		400
Forfeited, Weighted Average Exercise Price		$ 450.68
Expired, Number of Options	(4,679)	(5,759)
Expired, Weighted Average Exercise Price	$ 354.00	$ 234.50
Outstanding, vested and exercisable, Number of Options	46,671	51,350	57,509
Outstanding, vested and exercisable, Weighted Average Exercise Price	$ 396.25	$ 389.58	$ 394.50
Outstanding, vested and exercisable, Weighted Average Remaining Contractual Terms (Years)	4 years 9 months 4 days	4 years 11 months 5 days	5 years 8 months 5 days
Outstanding, vested and exercisable, Aggregate Intrinsic Value

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Weighted average price of options that were either forfeited or expired.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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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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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Number of share options (or share units) exercised during the current period.

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