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