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Amounts Applicable to Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 26, 2010 | Dec. 27, 2009
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Revenues | $ 32,710 | $ 103,390
Pretax (loss)/income | (758) | 6,262
Net (loss)/income | (322) | 3,790
Gains (after tax) | $ 21,195 |

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