Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 29, 2018	Sep. 30, 2017
Gross	$ 14,697	$ 11,877
Accumulated Amortization	(4,994)	(3,964)
Net Book Value	$ 9,703	$ 7,913
Customer Relationships [Member]
Weighted-Average Useful Life (Year)	16 years 328 days	20 years
Gross	$ 9,070	$ 6,500
Accumulated Amortization	(1,598)	(1,018)
Net Book Value	$ 7,472	$ 5,482
Technology-Based Intangible Assets [Member]
Weighted-Average Useful Life (Year)	20 years	20 years
Gross	$ 1,800	$ 1,800
Accumulated Amortization	(371)	(283)
Net Book Value	$ 1,429	$ 1,517
Noncompete Agreements [Member]
Weighted-Average Useful Life (Year)	5 years	4 years 292 days
Gross	$ 3,687	$ 3,577
Accumulated Amortization	(2,994)	(2,663)
Net Book Value	$ 693	$ 914
Trade Names [Member]
Weighted-Average Useful Life (Year)	4 years
Gross	$ 140
Accumulated Amortization	(31)
Net Book Value	$ 109

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.

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://fasb.org/us-gaap/role/ref/legacyRef
-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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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