Investments in Associated Companies Summarized Financial Information (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 29, 2015	Mar. 30, 2014
Schedule of Equity Method Investments [Line Items]
Equity in earnings of associated companies	$ 1,653,000	$ 1,593,000	$ 4,410,000	$ 4,512,000
Equity Method Investee- TNI [Member]
Schedule of Equity Method Investments [Line Items]
Share of TNI Operating Expenses	(130,000)	(41,000)	(198,000)	(34,000)
Equity Method Investment, Summarized Financial Information, Revenue	14,373,000	15,065,000	29,973,000	31,137,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments	11,745,000	12,297,000	23,847,000	24,667,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments	0	0	0	(87,000)
Equity Method Investment, Summarized Financial Information, Operating Income	2,628,000	2,768,000	6,126,000	6,557,000
Income (Loss) From Equity Method Investments Before Amortization	1,314,000	1,384,000	3,063,000	3,279,000
Amortization Of Intangible Assets- TNI	105,000	104,000	209,000	209,000
Equity in earnings of associated companies	1,209,000	1,280,000	2,854,000	3,070,000
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	16,022,000	16,119,000	34,678,000	33,432,000
Equity Method Investment, Summarized Financial Information, Operating Expenses Excluding Depreciation, Amortization And Workforce Adjustments	14,178,000	14,597,000	28,810,000	27,856,000
Equity Method Investment, Summarized Financial Information, Workforce Adjustments	47,000	229,000	57,000	229,000
Equity Method Investment, Summarized Financial Information, Depreciation And Amortization	463,000	398,000	927,000	794,000
Equity Method Investment, Summarized Financial Information, Operating Income	1,334,000	895,000	4,884,000	4,553,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	888,000	625,000	3,112,000	2,885,000
Equity in earnings of associated companies	$ 444,000	$ 313,000	$ 1,556,000	$ 1,442,000