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Note 21 - Quarterly Results of Operations (Unaudited) - Schedule of Quarterly Financial Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Oct. 31, 2025
Jul. 31, 2025
Apr. 30, 2025
Jan. 31, 2025
Oct. 31, 2024
Jul. 31, 2024
Apr. 30, 2024
Jan. 31, 2024
Oct. 31, 2025
Oct. 31, 2024
Net sales $ 19,828,929 $ 19,916,919 $ 17,549,748 $ 15,742,617 $ 19,485,565 $ 16,221,671 $ 16,112,098 $ 14,854,765 $ 73,038,213 $ 66,674,099
Gross profit 6,318,490 6,319,311 5,334,341 4,626,794 6,532,390 3,920,224 4,038,636 3,713,522 22,598,936 18,204,772
Selling, general and administrative expenses 6,029,403 5,736,667 5,743,455 5,459,059 5,850,216 5,237,646 5,319,580 5,093,105 22,968,584 21,500,547
Income (loss) from operations 268,748 562,474 (429,202) (852,352) 662,088 (1,337,553) (1,301,137) (1,399,685) (450,332) (3,376,287)
Income (loss) before income taxes 47,597 306,354 (683,144) (1,095,364) 373,175 (1,550,370) (1,594,119) (1,418,195) (1,424,557) (4,189,509)
Net loss $ 48,613 $ 301,886 $ (697,922) $ (1,107,431) $ 373,462 $ (1,557,053) $ (1,601,346) $ (1,425,274) $ (1,454,854) $ (4,210,211)
Net loss per share - basic and diluted (in dollars per share) $ 0.01 $ 0.04 $ (0.09) $ (0.14) $ 0.05 $ (0.2) $ (0.21) $ (0.18) $ (0.18) $ (0.54)