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Note 2 - Stock Incentive Plans and Other Share-based Compensation (Details Textual) (USD $)
3 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Amended 2011 Plan [Member]    
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 148,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= occ_Amended2011PlanMember
 
Restricted Stock [Member]    
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Allocated Share-based Compensation Expense $ 250,494us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 155,412us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Shares Paid for Tax Withholding for Share Based Compensation 36,802us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 219 days  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 2,300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember