Investments in Associated Companies Summarized Financial Information (Details) - USD ($)	3 Months Ended
	Dec. 25, 2016	Dec. 27, 2015
Schedule of Equity Method Investments [Line Items]
Equity in earnings of associated companies	$ 2,689,000	$ 2,799,000
Equity Method Investee- TNI [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Dividends or Distributions	983,000	1,479,000
Share of TNI Operating Expenses	142,000	(119,000)
Equity Method Investment, Summarized Financial Information, Revenue	13,314,000	14,782,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments	9,999,000	11,341,000
Equity Method Investment, Summarized Financial Information, Operating Income	3,315,000	3,441,000
Income (Loss) From Equity Method Investments Before Amortization	1,658,000	1,721,000
Amortization Of Intangible Assets- TNI	105,000	105,000
Equity in earnings of associated companies	1,553,000	1,616,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	418,000
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	105,000
Equity Method Investee- MNI [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Dividends or Distributions	1,250,000	1,750,000
Equity Method Investment, Summarized Financial Information, Revenue	17,042,000	17,789,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments	13,405,000	13,612,000
Equity Method Investment, Summarized Financial Information, Depreciation And Amortization	349,000	410,000
Equity Method Investment, Summarized Financial Information, Operating Income	3,288,000	3,767,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	2,272,000	2,358,000
Equity in earnings of associated companies	$ 1,136,000	$ 1,183,000