Note 7 - Intangibles (Detail) (USD $)	12 Months Ended
Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010	Dec. 09, 2011
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill				$ 3,980,000
Finite-Lived Intangible Assets, Accumulated Amortization	2,061,763	1,635,243
Finite-Lived Intangible Assets, Net	3,990,887	310,289
Amortization	452,670	89,218	70,133
MCHP Acquisition, Trade Names, Non-Compete Agreements and Customer Relationships [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	352,628
Finite-Lived Intangible Assets, Net	3,676,962
Patents and Trademarks [Member]
Finite-Lived Intangible Assets, Net	313,925	310,289
Amortization	$ 422,670	$ 64,218	$ 60,132

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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- Definition

Amount of acquisition cost of a business combination allocated to assets, excluding financial assets and goodwill, lacking physical substance.

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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