Note 6 - Stock-based Compensation - RSU Activity (Details) - Restricted Stock Units (RSUs) [Member] shares in Thousands	3 Months Ended
Dec. 28, 2019 $ / shares shares
Restricted stock units outstanding, beginning balance (in shares) \| shares	115
Weighted average grant date fair value, beginning balance (in dollars per share) \| $ / shares	$ 26.16
Restricted stock units outstanding, released (in shares) \| shares
Weighted average grant date fair value, released (in dollars per share) \| $ / shares
Restricted stock units outstanding, ending balance (in shares) \| shares	115
Weighted average grant date fair value, ending balance (in dollars per share) \| $ / shares	$ 26.16

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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