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Note 7 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Gross	$ 12,810	$ 14,697
Accumulated Amortization	(4,200)	(4,994)
Net Book Value	$ 8,610	$ 9,703
Customer Relationships [Member]
Weighted-Average Useful Life (Year)	16 years 328 days	16 years 328 days
Gross	$ 9,070	$ 9,070
Accumulated Amortization	(2,207)	(1,598)
Net Book Value	$ 6,863	$ 7,472
Technology-Based Intangible Assets [Member]
Weighted-Average Useful Life (Year)	20 years	20 years
Gross	$ 1,800	$ 1,800
Accumulated Amortization	(461)	(371)
Net Book Value	$ 1,339	$ 1,429
Noncompete Agreements [Member]
Weighted-Average Useful Life (Year)	5 years	5 years
Gross	$ 1,800	$ 3,687
Accumulated Amortization	(1,466)	(2,994)
Net Book Value	$ 334	$ 693
Trade Names [Member]
Weighted-Average Useful Life (Year)	4 years	4 years
Gross	$ 140	$ 140
Accumulated Amortization	(66)	(31)
Net Book Value	$ 74	$ 109

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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X

- 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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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