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Consolidated Statements of Operations - USD ($)
 12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2016
Net sales $ 87,828,590 $ 64,092,848 $ 64,616,001
Cost of goods sold 59,955,390 43,294,921 44,890,865
Gross profit 27,873,200 20,797,927 19,725,136
Selling, general and administrative expenses 26,130,956 21,968,757 20,760,735
Royalty (income) expense, net (32,898) 120,478 164,463
Amortization of intangible assets 34,768 25,704 16,903
Income (loss) from operations 1,740,374 (1,317,012) (1,216,965)
Other expense, net:      
Interest expense (608,417) (523,035) (620,810)
Other, net (79,855) 95,838 42,680
Other expense, net (688,272) (427,197) (578,130)
Income (loss) before income taxes 1,052,102 (1,744,209) (1,795,095)
Income tax expense (benefit) (16,651) (5,438) 5,899
Net income (loss) 1,068,753 (1,738,771) (1,800,994)
Net loss attributable to noncontrolling interest (22,172)
Net income (loss) attributable to Optical Cable Corporation $ 1,068,753 $ (1,738,771) $ (1,778,822)
Net income (loss) attributable to Optical Cable Corporation per share - basic and diluted (in dollars per share) $ 0.14 $ (0.27) $ (0.28)