Note 11 - Employee Benefit Plans - Plan Asset Mix (Details)	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013	Oct. 03, 205
Large Cap Equities [Member]
Defined Benefit Plan, Target Plan Asset Allocations	35.00%
Percentage of Plan Assets		36.60%	37.70%	37.60%
Mid Cap Equities [Member]
Defined Benefit Plan, Target Plan Asset Allocations	8.00%
Percentage of Plan Assets		7.40%	8.10%	7.70%
Small Cap Equities [Member]
Defined Benefit Plan, Target Plan Asset Allocations	9.00%
Percentage of Plan Assets		8.30%	8.50%	8.20%
International Equities [Member]
Defined Benefit Plan, Target Plan Asset Allocations	8.00%
Percentage of Plan Assets		8.80%	7.50%	8.80%
Fixed Income Investments [Member]
Defined Benefit Plan, Target Plan Asset Allocations	40.00%
Percentage of Plan Assets		38.00%	36.10%	37.30%
Cash and Cash Equivalents [Member]
Defined Benefit Plan, Target Plan Asset Allocations	0.00%
Percentage of Plan Assets		0.90%	2.10%	0.40%