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Quarterly Results Of Operations (Schedule Of Quarterly Results Of Operations) (Details) (USD $)
 0 Months Ended 3 Months Ended 12 Months Ended
Jul. 16, 2012
Oct. 31, 2012
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2011
Jul. 31, 2011
Apr. 30, 2011
Jan. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Quarterly Results Of Operations [Abstract]                        
Net sales   $ 22,134,429 $ 22,003,689 $ 22,051,197 $ 17,334,015 $ 19,667,202 $ 18,775,145 $ 17,184,460 $ 17,712,784 $ 83,523,330 $ 73,339,591 $ 67,506,174
Gross profit   7,755,185 8,786,953 8,860,894 6,150,054 7,414,117 6,509,124 5,943,140 6,424,840 31,553,086 26,291,221 23,759,954
Income (loss) before income taxes   580,990 1,732,652 1,377,432 192,461 405,016 252,110 (179,844) 378,469 3,883,535 855,751 (5,919,017)
Net income (loss) attributable to Optical Cable Corporation   $ 434,520 $ 1,173,428 $ 948,925 $ 192,444 $ 236,039 $ 117,809 $ (89,843) $ 402,311 $ 2,749,317 $ 666,316 $ (5,732,925)
Basic and diluted net income (loss) per share attributable to Optical Cable Corporation   $ 0.07 $ 0.18 $ 0.15 $ 0.03 $ 0.04 $ 0.02 $ (0.02) $ 0.06 $ 0.43 $ 0.11 $ (0.95)
Cash dividends declared per common share $ 0.01 $ 0.015 $ 0.015 $ 0.015 $ 0.015 $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.06 $ 0.04 $ 0.01