Note 12 - Commitments and Contingencies (Details Textual)	12 Months Ended
	Oct. 01, 2016 USD ($)	Oct. 03, 2015 USD ($)	Sep. 27, 2014 USD ($)
Cost of Sales [Member]
Insurance Recoveries		$ 244,000	$ 3,900,000
Selling, General and Administrative Expenses [Member]
Insurance Recoveries		69,000	147,000
Other Expense [Member]
CustomerDisputes		700,000
Purchase Commitment [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 11,600,000
Chief Executive Officer and Chief Financial Officer [Member] | Severance Agreement [Member]
Guarantee Obligations Term	2 years
Ratio of Severance Benefits to Base Compensation	1.5
Severance Benefits Continuation of Health and Welfare Benefits Term	1 year 180 days
Chief Executive Officer and Chief Financial Officer [Member] | Severance Agreement Renewal [Member]
Guarantee Obligations Term	1 year
Chief Executive Officer and Chief Financial Officer [Member] | Change in Control Agreement [Member]
Ratio of Severance Benefits to Base Compensation	2
Severance Benefits Continuation of Health and Welfare Benefits Term	2 years
Guarantor Obligations Triggering Event Term from Change in Control to Termination	2 years
Ratio of Severance Benefits to the Average Bonus for the Prior Three Years	2
Key Members of Management [Member] | Change in Control Agreement [Member]
Ratio of Severance Benefits to Base Compensation	1
Severance Benefits Continuation of Health and Welfare Benefits Term	1 year
Guarantor Obligations Triggering Event Term from Change in Control to Termination	2 years
Ratio of Severance Benefits to the Average Bonus for the Prior Three Years	1
Change in Control Agreement [Member]
Guarantee Obligations Term	2 years
Change in Control Agreement Renewal [Member]
Guarantee Obligations Term	1 year
Insurance Recoveries		2,000,000	6,700,000
Operating Leases, Rent Expense	$ 1,800,000	$ 1,800,000	$ 1,200,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,400,000
Operating Leases, Future Minimum Payments, Due in Two Years	742,000
Operating Leases, Future Minimum Payments, Due in Three Years	260,000
Operating Leases, Future Minimum Payments, Due in Four Years	50,000
Operating Leases, Future Minimum Payments, Due Thereafter	0
Purchase Commitment, Remaining Minimum Amount Committed	$ 26,800,000
Non-cancelable Purchase Commitment Term	100 days