v3.19.2
Document And Entity Information - shares
9 Months Ended
Jul. 31, 2019
Sep. 11, 2019
Document Information [Line Items]    
Entity Central Index Key 0001000230  
Entity Shell Company false  
Entity Registrant Name OPTICAL CABLE CORP  
Amendment Flag false  
Current Fiscal Year End Date --10-31  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2019  
Entity Small Business true  
Entity Emerging Growth Company false  
Document Quarterly Report true  
Document Transition Report false  
Document Type 10-Q  
Document Period End Date Jul. 31, 2019  
Entity File Number 0-27022  
Entity Incorporation, State or Country Code VA  
Entity Tax Identification Number 54-1237042  
Entity Address, Address Line One 5290 Concourse Drive  
Entity Address, City or Town Roanoke  
Entity Address, State or Province VA  
Entity Address, Postal Zip Code 24019  
City Area Code 540  
Local Phone Number 265-0690  
Title of 12(b) Security Common Stock, no par value  
Trading Symbol OCC  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   7,459,056