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Stock-Based Compensation (Details 1) (USD $)
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6 Months Ended | 12 Months Ended | |
|---|---|---|---|
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Jun. 24, 2012
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Dec. 25, 2011
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Dec. 26, 2010
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| 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 | |||