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Document And Entity Information (USD $)
 12 Months Ended
Oct. 31, 2012
Dec. 14, 2012
Apr. 30, 2012
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Oct. 31, 2012    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2012    
Entity Registrant Name OPTICAL CABLE CORP    
Entity Central Index Key 0001000230    
Current Fiscal Year End Date --10-31    
Entity Filer Category Smaller Reporting Company    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Common Stock, Shares Outstanding   6,305,092  
Entity Public Float     $ 17,784,720