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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 |  |

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