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Investments in Associated Companies Summarized Financial Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jun. 26, 2016
Jun. 28, 2015
Jun. 26, 2016
Jun. 28, 2015
Schedule of Equity Method Investments [Line Items]        
Equity in earnings of associated companies $ 1,825,000 $ 1,705,000 $ 6,633,000 $ 6,114,000
Equity Method Investee- TNI [Member]        
Schedule of Equity Method Investments [Line Items]        
Proceeds from Equity Method Investment, Dividends or Distributions 1,501,000 1,041,000 5,230,000 4,113,000
Share of TNI Operating Expenses 162,000 45,000 (1,000) (153,000)
Equity Method Investment, Summarized Financial Information, Revenue 12,231,000 13,063,000 41,053,000 43,035,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments 10,073,000 10,936,000 32,515,000 34,783,000
Equity Method Investment, Summarized Financial Information, Operating Income 2,158,000 2,127,000 8,538,000 8,252,000
Income (Loss) From Equity Method Investments Before Amortization 1,080,000 1,064,000 4,269,000 4,127,000
Amortization Of Intangible Assets- TNI 105,000 105,000 314,000 314,000
Equity in earnings of associated companies 975,000 959,000 3,955,000 3,813,000
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 314,000   314,000  
Equity Method Investee- MNI [Member]        
Schedule of Equity Method Investments [Line Items]        
Proceeds from Equity Method Investment, Dividends or Distributions 1,750,000 1,000,000 5,750,000 4,000,000
Equity Method Investment, Summarized Financial Information, Revenue 16,263,000 16,685,000 49,602,000 51,580,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments 13,160,000 13,623,000 39,819,000 42,650,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments 13,000 261,000 32,000 318,000
Equity Method Investment, Summarized Financial Information, Depreciation And Amortization 410,000 463,000 1,303,000 1,390,000
Equity Method Investment, Summarized Financial Information, Operating Income 2,680,000 2,338,000 8,448,000 7,222,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss) 1,699,000 1,491,000 5,347,000 4,603,000
Equity in earnings of associated companies $ 850,000 $ 746,000 $ 2,678,000 $ 2,301,000