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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
 3 Months Ended 6 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
Net sales $ 18,910,000 $ 16,110,000 $ 38,110,000 $ 29,568,000
Cost of sales 12,960,000 11,286,000 26,443,000 21,441,000
Gross profit 5,950,000 4,824,000 11,667,000 8,127,000
Operating expenses:        
Engineering 683,000 637,000 1,365,000 1,405,000
Selling and general 5,161,000 4,602,000 10,140,000 9,221,000
Total operating expenses 5,844,000 5,239,000 11,505,000 10,626,000
Operating income (loss) 106,000 (415,000) 162,000 (2,499,000)
Other expense (216,000) (230,000) (481,000) (339,000)
Loss before provision for income taxes (110,000) (645,000) (319,000) (2,838,000)
Provision for income taxes 135,000 3,649,000 171,000 2,818,000
Consolidated net loss $ (245,000) $ (4,294,000) $ (490,000) $ (5,656,000)
Loss per share:        
Basic (in dollars per share) $ (0.02) $ (0.41) $ (0.05) $ (0.54)
Diluted (in dollars per share) $ (0.02) $ (0.41) $ (0.05) $ (0.54)
Weighted average shares outstanding:        
Basic (in shares) 10,669,608 10,495,548 10,614,364 10,452,597
Diluted (in shares) 10,669,608 10,495,548 10,614,364 10,452,597