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v3.23.3

Note 9 - Retirement Plan (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Sep. 26, 2023 | Sep. 27, 2022
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 3.00% |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 50.00% |
Defined Contribution Plan, Cost | $ 212,000 | $ 207,000
Minimum [Member] |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 3.00% |
Maximum [Member] |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 5.00% |

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |