Note 20 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Purchase Obligation, Due in Next Twelve Months	$ 700,000
Unrecorded Unconditional Purchase Obligation, Purchases	829,000	$ 823,000	$ 898,000
License Fees	$ 30,000

The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration