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Investments in Associated Companies Summarized Financial Information (Details) (USD $) | 12 Months Ended
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Sep. 30, 2012 | Sep. 25, 2011 | Sep. 26, 2010
Schedule of Equity Method Investments [Line Items] |  |  |
Equity in earnings of associated companies | $ 7,231,000 | $ 6,151,000 | $ 7,746,000
Reduction of investment in TNI Partners | 0 | 11,900,000 | 0
Associated companies | 42,201,000 | 44,057,000 |
Equity Method Investee- TNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment, Summarized Financial Information, Current Assets | 8,029 | 7,857 |
Share of TNI Operating Expenses | (522,000) | 76,000 | 291,000
Editorial Fees | 5,994,000 | 7,043,000 | 7,510,000
Equity Method Investment, Summarized Financial Information, Revenue | 59,043,000 | 62,452,000 | 64,379,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments | 49,568,000 | 52,882,000 | 52,923,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments | (31,000) | 1,190,000 | 784,000
Equity Method Investment, Summarized Financial Information, Operating Income | 9,506,000 | 8,380,000 | 10,672,000
Income (Loss) From Equity Method Investments Before Amortization | 4,753,000 | 4,190,000 | 5,336,000
Amortization Of Intangible Assets- TNI | 723,000 | 1,092,000 | 1,156,000
Equity in earnings of associated companies | 4,030,000 | 3,098,000 | 4,180,000
Reduction of investment in TNI Partners | 0 | 11,900,000 | 0
Associated companies | 19,450,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 620,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two | 418,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 418,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 418,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 418,000 |  |
Equity Method Investment, Summarized Financial Information, Noncurrent Assets | 13 | 32 |
Equity Method Investment, Summarized Financial Information, Assets | 8,042 | 7,889 |
Equity Method Investment, Summarized Financial Information, Current Liabilities | 5,601 | 6,136 |
Equity Method Investment Summarized Financial Information, Equity | 2,441 | 1,753 |
Equity Method Investment, Summarized Financial Information, Liabilities and Equity | 8,042 | 7,889 |
Equity Method Investee- MNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment, Summarized Financial Information, Current Assets | 25,000 | 22,000 |
Editorial Fees | 8,098,000 | 8,201,000 | 8,318,000
Equity Method Investment, Summarized Financial Information, Revenue | 70,158,000 | 73,011,000 | 75,137,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments | 57,981,000 | 60,982,000 | 61,467,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments | 546,000 | 530,000 | 296,000
Equity Method Investment, Summarized Financial Information, Depreciation And Amortization | 1,689,000 | 2,227,000 | 2,372,000
Equity Method Investment, Summarized Financial Information, Operating Income | 9,942,000 | 9,272,000 | 11,002,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss) | 6,469,000 | 6,106,000 | 7,132,000
Equity in earnings of associated companies | 3,201,000 | 3,053,000 | 3,566,000
Equity Method Investment, Summarized Financial Information, Noncurrent Assets | 30,000 | 30,000 |
Equity Method Investment, Summarized Financial Information, PPE | 8,000 | 9,000 |
Equity Method Investment, Summarized Financial Information, Assets | 62,000 | 61,000 |
Equity Method Investment, Summarized Financial Information, Current Liabilities | 10,015,000 | 8,000 |
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities | 6,720,000 | 6,000 |
Equity Method Investment Summarized Financial Information, Equity | 45,571,000 | 47,000 |
Equity Method Investment, Summarized Financial Information, Liabilities and Equity | 62,306,000 | 61,000 |
Equity Method Investee- TNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Less Than 100% Owned Subsidiaries, Percentage Owned | 50.00% |  |
Equity Method Investee- MNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Less Than 100% Owned Subsidiaries, Percentage Owned | 50.00% |  |
Goodwill [Member] | Equity Method Investee- TNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity | 12,366,000 |  |
Finite Lived Intangible Assets [Member] | Equity Method Investee- TNI [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity | $ 6,430,000 |  |

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