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Quarterly Results Of Operations (Schedule Of Quarterly Results Of Operations) (Details) (USD $)
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0 Months Ended | 3 Months Ended | 12 Months Ended | |||||||||
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Jul. 16, 2012
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Oct. 31, 2012
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Jul. 31, 2012
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Apr. 30, 2012
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Jan. 31, 2012
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Oct. 31, 2011
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Jul. 31, 2011
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Apr. 30, 2011
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Jan. 31, 2011
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Oct. 31, 2012
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Oct. 31, 2011
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Oct. 31, 2010
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| 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 |