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Note 6 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Oct. 02, 2021 | Oct. 01, 2022
Disposal Group, Including Discontinued Operation, Assets, Total | $ 6,306 | $ 0
Summerville Facility Acquired in STM Acquisition [Member] |  |
Disposal Group, Including Discontinued Operation, Assets, Total | 6,300 |
Summerville Facility Acquired in STM Acquisition [Member] | Restructuring Charges [Member] |  |
Impairment of Long-Lived Assets to be Disposed of | 1,400 |
Non Financial [Member] | Fair Value, Nonrecurring [Member] |  |
Assets, Fair Value Disclosure, Total | $ 0 | $ 0

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