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Investments in Associated Companies Summarized Financial Information (Details) (USD $)
 3 Months Ended 6 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Mar. 30, 2014
Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]        
Equity in earnings of associated companies $ 1,593,000 $ 1,733,000 $ 4,512,000 $ 4,778,000
Equity Method Investee- TNI [Member]
        
Schedule of Equity Method Investments [Line Items]        
Share of TNI Operating Expenses (41,000,000) (108,000,000) (34,000,000) (276,000,000)
Equity Method Investment, Summarized Financial Information, Revenue 15,065,000 15,922,000 31,137,000 33,466,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments 12,297,000 13,114,000 24,667,000 26,751,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments 0 0 (87,000) 0
Equity Method Investment, Summarized Financial Information, Operating Income 2,768,000 2,808,000 6,557,000 6,715,000
Income (Loss) From Equity Method Investments Before Amortization 1,384,000 1,404,000 3,279,000 3,358,000
Amortization Of Intangible Assets- TNI 104,000 181,000 209,000 361,000
Equity in earnings of associated companies 1,280,000 1,223,000 3,070,000 2,997,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 418,000   418,000  
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two 418,000   418,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 418,000   418,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 418,000   418,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 418,000   418,000  
Equity Method Investee- MNI [Member]
        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Summarized Financial Information, Revenue 16,119,000 15,474,000 33,432,000 34,038,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments 14,597,000 13,628,000 27,856,000 27,677,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments 229,000 (11,000) 229,000 (11,000)
Equity Method Investment, Summarized Financial Information, Depreciation And Amortization 398,000 381,000 794,000 764,000
Equity Method Investment, Summarized Financial Information, Operating Income 895,000 1,476,000 4,553,000 5,608,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss) 625,000 952,000 2,885,000 3,495,000
Equity in earnings of associated companies $ 313,000 $ 510,000 $ 1,442,000 $ 1,781,000