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Note 11 - Contingencies (Details) (USD $) | 0 Months Ended | 6 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 05, 2011 | Mar. 31, 2012 | Sep. 28, 2013 | Sep. 29, 2012 | Oct. 01, 2011 | Nov. 19, 2007 | Sep. 28, 2013 Severance Agreement [Member] Health And Welfare Benefits [Member] Chief Executive Officer And Chief Financial Officer [Member] | Sep. 28, 2013 Severance Agreement [Member] Health And Welfare Benefits [Member] Key Members Of Management [Member] | Sep. 28, 2013 Severance Agreement [Member] Chief Executive Officer And Chief Financial Officer [Member] | Sep. 28, 2013 Severance Agreement Renewal [Member] Chief Executive Officer And Chief Financial Officer [Member] | Sep. 28, 2013 Change In Control Agreement [Member] Health And Welfare Benefits [Member] Chief Executive Officer And Chief Financial Officer [Member] | Sep. 28, 2013 Change In Control Agreement [Member] Compensation [Member] Key Members Of Management [Member] | Sep. 28, 2013 Change In Control Agreement [Member] Bonus [Member] Key Members Of Management [Member] | Sep. 28, 2013 Change In Control Agreement [Member] Chief Executive Officer And Chief Financial Officer [Member] | Sep. 28, 2013 Change In Control Agreement [Member] | Sep. 28, 2013 Change In Control Agreement Renewal [Member] | Nov. 19, 2007 Damages Assessed Against DSI [Member] | Nov. 19, 2007 Damages Allegedly Incurred by DSI [Member] | Sep. 28, 2013 Purchase Commitment [Member]
Note 11 - Contingencies (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense |  |  | $ 1,200,000 | $ 908,000 | $ 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments Due |  |  | 845,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Due in Two Years |  |  | 542,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Due in Three Years |  |  | 183,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Due in Four Years |  |  | 37,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Due Thereafter |  |  | 325,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase Commitment, Remaining Minimum Amount Committed |  |  | 62,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000
Purchase Commitment, Description |  |  | 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,300,000 | 2,700,000 |
Accounts Receivable, Gross, Current |  |  | 42,006,000 | 43,261,000 |  | 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Legal Settlements |  | $ 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations, Term |  |  |  |  |  |  | eighteen | one | two | one | two | severance benefits equal to one times base compensation | one times the average bonus |  | two | one |  |  |
Guarantor Obligations, Maximum Exposure, Description |  |  |  |  |  |  |  |  | one and one-half times the executive's annual base salary |  |  |  |  |  |  |  |  |  |
Guarantor Obligations, Triggering Event |  |  |  |  |  |  |  |  |  |  |  |  |  | termination within two years of a change of control |  |  |  |  |

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- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Subparagraph a, b -Article 5 + Details
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