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Note 19 - Quarterly Results of Operations (Unaudited) - Schedule of Quarterly Financial Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Oct. 31, 2022
Jul. 31, 2022
Apr. 30, 2022
Jan. 31, 2022
Oct. 31, 2021
Jul. 31, 2021
Apr. 30, 2021
Jan. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2020
Net sales $ 20,055,750 $ 17,382,640 $ 17,200,578 $ 14,440,295 $ 15,883,847 $ 15,634,760 $ 15,741,114 $ 11,876,573 $ 69,079,263 $ 59,136,294 $ 55,277,400
Gross profit 6,623,350 4,808,205 5,033,446 4,045,852 5,055,227 4,090,246 4,819,216 2,309,390 20,510,853 16,274,079 14,086,378
Selling, general and administrative expenses 5,188,984 4,954,221 5,036,331 4,780,199 4,811,073 4,530,563 4,589,592 4,307,924 19,959,735 18,239,152 19,245,502
Income (loss) before income taxes 1,196,081 (362,249) (233,185) (923,045) (3,876) 5,376,535 3,391,775 (2,173,816) $ (322,398) $ 6,590,618 $ (6,103,183)
Net income (loss) $ 1,188,564 $ (371,871) $ (227,991) $ (935,793) $ (5,930) $ 5,372,767 $ 3,385,159 $ (2,141,480)      
Net income (loss) per share - basic and diluted (in dollars per share) $ 0.15 $ (0.05) $ (0.03) $ (0.12) $ 0.00 $ 0.71 $ 0.45 $ (0.29) $ (0.05) $ 0.87 $ (0.83)