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Note 2 - Business Acquisition - Unaudited Pro Forma Financial Information (Details) - Microlab/FXR LLC [Member] - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Oct. 31, 2023 | Oct. 31, 2022
Revenue | $ 72,168 | $ 91,358
Net (loss) income | $ (3,078) | $ 1,959
Basic (in dollars per share) | $ (0.3) | $ 0.19
Diluted (in dollars per share) | $ (0.3) | $ 0.19
Basic (in shares) | 10,283,449 | 10,120,254
Diluted (in shares) | 10,283,449 | 10,242,417

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
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