Document And Entity Information Other receivables Other income (expense), net: Thereafter, Finance Lease Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Note To Financial Statement Details Textual 2027, Operating Lease Note 3 - Allowance for Credit Losses for Trade Accounts Receivable 2028, Operating Lease Note 4 - Inventories Note 5 - Product Warranties Note 7 - Leases Note 9 - Net Loss Per Share Note 11 - Segment Information Liabilities, Noncurrent [Abstract] Note 12 - Revenue Recognition Note 3 - Allowance for Credit Losses for Trade Accounts Receivable - Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable (Details) Note 4 - Inventories - Components of Inventories (Details) Note 5 - Product Warranties - Changes in Accrual for Product Warranties (Details) Note 7 - Leases - Future Payments Due (Details) Note 9 - Net Loss Per Share - Components of Reconciliation of Numerators and Denominators Net Loss Per Share (Details) Other assets, net Share-based compensation expense Note 11 - Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) us-gaap_LiabilitiesCurrent Total current liabilities 2026, Operating Lease Note 12 - Revenue Recognition - Schedule of Revenue from External Customers by Geographical Areas (Details) Notes To Financial Statements Notes To Financial Statements [Abstract] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period us-gaap_LesseeOperatingLeaseTermOfContract Lessee, Operating Lease, Term of Contract Lessee, Operating and Finance Leases Disclosure [Text Block] The entire disclosure for operating and finance leases of lessee. Includes, but is not limited to, description of lessee's operating and finance lease and maturity analysis of operating and finance lease liability. Depreciation and amortization us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Current installments of long-term debt us-gaap_AssetsCurrent Total current assets Note payable, revolver - current us-gaap_LesseeFinanceLeaseDiscountRate Lessee, Finance Lease, Discount Rate Income taxes refundable - current Operating Lease For Office Equipment [Member] Represents operating lease for office equipment. Common stock, no par value, authorized 50,000,000 shares; issued and outstanding 8,189,399 shares at January 31, 2026 and 8,227,871 shares at October 31, 2025 Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: us-gaap_CommonStockSharesAuthorized Common Stock, Shares Authorized (in shares) Accounts payable and accrued expenses us-gaap_CommonStockSharesIssued Common Stock, Shares, Issued (in shares) us-gaap_CommonStockNoParValue Common Stock, No Par Value (in dollars per share) Income taxes payable Accrued compensation and payroll taxes Statistical Measurement [Domain] Lessee, Lease, Description [Table] us-gaap_OperatingLeasePayments Operating Lease, Payments Maximum [Member] Minimum [Member] Revolving Credit Facility [Member] Statistical Measurement [Axis] Credit Facility [Axis] Preferred stock, no par value, authorized 1,000,000 shares; none issued and outstanding Credit Facility [Domain] us-gaap_PreferredStockSharesIssued Preferred Stock, Shares Issued (in shares) us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_PreferredStockNoParValue Preferred Stock, No Par Value (in dollars per share) occ_RoyaltyRevenueExpense Royalty expense, net Net amount of revenue (expense) recognized during the period related to royalty transactions. Geographical [Axis] Geographical [Domain] us-gaap_PreferredStockSharesAuthorized Preferred Stock, Shares Authorized (in shares) Inventories Total us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Net sales Net sales us-gaap_PaymentsToAcquireIntangibleAssets Investment in intangible assets us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchase of and deposits for the purchase of property and equipment occ_OperatingLeaseRightofUseAssetReduction Operating Lease, Right-of-Use Asset, Reduction Amount of reduction in right of use assets of operating lease. occ_StockIssuedDuringPeriodSharesShareBasedCompensationNet Share-based compensation, net (in shares) Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP). Allowance for Credit Losses [Text Block] Customer [Axis] Customer [Domain] us-gaap_ProductWarrantyAccrualPayments Warranty claims and costs paid during the period Current liabilities: Liabilities accrued for warranties issued during the period us-gaap_Assets Total assets Changes in liability for pre-existing warranties during the period Plan Name [Axis] Plan Name [Domain] Cash flows from operating activities: us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount us-gaap_OperatingLeaseExpense Operating Lease, Expense us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Statement [Line Items] us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent Accounts Receivable, Allowance for Credit Loss, Current Balance at beginning of period Balance at end of period us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Trade accounts receivable, net of allowance for credit losses of $58,933 at January 31, 2026 and $72,909 at October 31, 2025 us-gaap_NumberOfReportableSegments Number of Reportable Segments Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement [Text Block] Shareholders’ equity: Schedule of Product Warranty Liability [Table Text Block] Product Warranty Liability [Table] Other, net us-gaap_NonoperatingIncomeExpense Other income (expense), net Product Warranty Disclosure [Text Block] Segment Reporting Disclosure [Text Block] Fair Value, by Balance Sheet Grouping [Table] Award Type [Domain] us-gaap_TemporaryEquityAggregateAmountOfRedemptionRequirement Temporary Equity, Aggregate Amount of Redemption Requirement Current assets: Fair Value Disclosures [Text Block] us-gaap_TemporaryEquitySharesIssued Temporary Equity, Shares Issued (in shares) us-gaap_TemporaryEquitySharesOutstanding Temporary Equity, Shares Outstanding (in shares) Net income (loss) (numerator) us-gaap_NetIncomeLoss Net income (loss) Net loss Award Type [Axis] Redeemable restricted common stock, no par value, 642,199 shares issued and outstanding as of January 31, 2026 and October 31, 2025 Intangible assets, net us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash at beginning of period Cash at end of period us-gaap_TemporaryEquityParOrStatedValuePerShare Temporary Equity, Par or Stated Value Per Share (in dollars per share) Assets [Abstract] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase (decrease) in cash us-gaap_Liabilities Total liabilities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities Restricted Stock [Member] Commitments and Contingencies us-gaap_OperatingIncomeLoss Income (loss) from operations us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Prepaid expenses and other assets occ_AdjustmentsToAdditionalPaidInCapitalStockIssuedIncreaseInRedemptionValue Change in aggregate redemption value of redeemable restricted common stock Amount of decrease in additional paid in capital (APIC) resulting from the increase in the aggregate redemption value of stock issued. us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities us-gaap_GrossProfit Gross profit Cost of goods sold Cost of goods sold Counterparty Name [Axis] Counterparty Name [Domain] Loss Contingencies [Table] us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent Deferred Compensation Liability, Current and Noncurrent Commitments and Contingencies Disclosure [Text Block] us-gaap_ContractWithCustomerLiability Contract with Customer, Liability Property and equipment, net Redeemable Restricted Common Stock [Member] Represents information pertaining to redeemable restricted common stock. Redeemable Restricted Common Stock [Text Block] The entire disclosure for redeemable restricted common stock. us-gaap_PaymentsOfStockIssuanceCosts Payments of Stock Issuance Costs Long-Term Debt, Type [Axis] Long-Term Debt, Type [Domain] Lightera, LLC [Member] Represents information pertaining to Lightera, LLC. Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] us-gaap_ProductWarrantyAccrual Standard and Extended Product Warranty Accrual Balance at beginning of period Balance at end of period occ_SharesIssuedValueShareBasedPaymentArrangementForfeiture Share-based compensation, net The value amount, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). Cash flows from investing activities: Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Retained Earnings [Member] Earnings Per Share [Text Block] Title and Position [Domain] us-gaap_ProceedsFromIssuanceOfCommonStock Proceeds from Issuance of Common Stock Title and Position [Axis] Income taxes payable us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable Accounts payable and accrued expenses us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities Common Stock [Member] Accrued compensation and payroll taxes us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities Income tax expense (benefit) Income tax expense (benefit) Equity Components [Axis] Equity Component [Domain] Accounts Payable and Accrued Liabilities [Member] occ_LineOfCreditFacilityMaximumPercentageOfOutstandingEligibleAccountsLoanValue Line of Credit Facility, Maximum Percentage of Outstanding Eligible Accounts Loan Value Percent of maximum outstanding eligible accounts loan value available for advance. us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Income (loss) before income taxes North Mill Capital LLC [Member] Represents North Mill Capital LLC. occ_DebtInstrumentAmortizationPeriod Debt Instrument, Amortization Period Period for amortization of the debt instrument. Thereafter, Operating Lease Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Accounts Receivable, Allowance for Credit Loss [Table Text Block] us-gaap_TravelAndEntertainmentExpense Travel and entertainment expenses us-gaap_PaymentsOfFinancingCosts Payments for financing costs us-gaap_LineOfCredit Long-Term Line of Credit occ_LineOfCreditFacilityPercentOfEligibleAccounts Line of Credit Facility, Percent of Eligible Accounts Percent of aggregate outstanding amount of eligible accounts available for advance. occ_LineOfCreditFacilityPercentOfEligibleInventory Line of Credit Facility, Percent of Eligible Inventory Percent of aggregate outstanding amount of eligible inventory available for advance. Cash occ_LineOfCreditFacilityAdditionalCapacityForAdvances Line of Credit Facility, Additional Capacity for Advances Additional facility for advances. us-gaap_InterestExpenseNonoperating Interest expense, net Other noncurrent liabilities us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities us-gaap_LaborAndRelatedExpense Employee and contracted sales personnel-related expenses us-gaap_AllocatedShareBasedCompensationExpense Share-Based Payment Arrangement, Expense Disaggregation of Revenue [Table] us-gaap_RepaymentsOfLongTermDebt Principal payments on long-term debt occ_LineOfCreditFacilityRestrictedCapacityForAdvances Line of Credit Facility, Restricted Capacity for Advances Additional limit to facility for advances. Revenue from Contract with Customer [Text Block] Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Domain] dei_DocumentQuarterlyReport Document Quarterly Report dei_EntityIncorporationStateCountryCode Entity Incorporation, State or Country Code Amendment Flag Accounting Policies [Abstract] dei_DocumentTransitionReport Document Transition Report dei_CityAreaCode City Area Code Concentration Risk Disclosure [Text Block] dei_EntityInteractiveDataCurrent Entity Interactive Data Current Concentration Risk [Table] us-gaap_GainLossOnSaleOfPropertyPlantEquipment Loss on disposal of property and equipment SLR Business Credit [Member] Represents SLR Business Credit. us-gaap_SharesOutstanding Balances (in shares) Balances (in shares) Security Exchange Name us-gaap_CommonStockSharesOutstanding Common Stock, Shares, Outstanding (in shares) us-gaap_PreferredStockSharesOutstanding Preferred Stock, Shares Outstanding (in shares) dei_Security12bTitle Title of 12(b) Security Financing Receivable, Allowance for Credit Loss [Table] us-gaap_IncreaseDecreaseInOtherOperatingAssets Other assets Current Fiscal Year End Date Increase (decrease) in: us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 Debt Instrument, Basis Spread on Variable Rate us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other assets us-gaap_DebtInstrumentInterestRateEffectivePercentage Debt Instrument, Interest Rate, Effective Percentage us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent Operating Lease, Weighted Average Discount Rate, Percent Document Fiscal Period Focus Document Fiscal Year Focus us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability dei_DocumentPeriodEndDate Document Period End Date us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1 Operating Lease, Weighted Average Remaining Lease Term dei_EntityFileNumber Entity File Number Collaborative Arrangement and Arrangement Other than Collaborative [Table] dei_EntityEmergingGrowthCompany Entity Emerging Growth Company occ_ShippingExpenses Shipping expenses Amount of cost of shipping expenses. dei_DocumentType Document Type dei_EntitySmallBusiness Entity Small Business dei_EntityShellCompany Entity Shell Company Document Information [Line Items] Document Information [Table] us-gaap_AreaOfRealEstateProperty Area of Real Estate Property occ_ProceedsFromIssuanceOfCommonStockNet Proceeds from Issuance of Common Stock The net cash inflow from the additional capital contribution to the entity. dei_EntityFilerCategory Entity Filer Category dei_EntityCurrentReportingStatus Entity Current Reporting Status Variable Rate [Domain] us-gaap_IncreaseDecreaseInOtherReceivables Other receivables Redeemable Noncontrolling Interest [Table] us-gaap_RepaymentsOfNotesPayable Payments on note payable, revolver Prime Rate [Member] us-gaap_IncreaseDecreaseInIncomeTaxesReceivable Income taxes refundable us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Proceeds from note payable, revolver us-gaap_IncreaseDecreaseInAccountsReceivable Trade accounts receivable us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage Entity Tax Identification Number Non-US [Member] Entity Central Index Key dei_EntityRegistrantName Entity Registrant Name Entity [Domain] Customer Concentration Risk [Member] Legal Entity [Axis] Statement [Table] dei_EntityAddressAddressLine1 Entity Address, Address Line One Statement of Financial Position [Abstract] Shares (denominator) (in shares) Amortization of intangible assets dei_EntityAddressCityOrTown Entity Address, City or Town dei_EntityAddressPostalZipCode Entity Address, Postal Zip Code Net income (loss) per share: Basic and diluted (in dollars per share) dei_EntityAddressStateOrProvince Entity Address, State or Province Concentration Risk Type [Axis] Concentration Risk Type [Domain] Statement of Cash Flows [Abstract] Virginia Real Estate Loan [Member] The name of a real estate loan. dei_EntityCommonStockSharesOutstanding Entity Common Stock, Shares Outstanding (in shares) us-gaap_LesseeFinanceLeaseRemainingLeaseTerm Lessee, Finance Lease, Remaining Lease Term us-gaap_ContractWithCustomerRefundLiability Contract with Customer, Refund Liability Statement of Stockholders' Equity [Abstract] Lease Contractual Term [Domain] Lease Contractual Term [Axis] Income Statement [Abstract] Revenue Benchmark [Member] Revenue from External Customers by Geographic Areas [Table Text Block] us-gaap_ProfessionalFees Professional fees and expenses Long-Term Debt [Text Block] us-gaap_IncreaseDecreaseInInventories Inventories dei_TradingSymbol Trading Symbol us-gaap_FinanceLeaseInterestExpense Finance Lease, Interest Expense Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] us-gaap_FinanceLeaseLiabilityPaymentsDue Total undiscounted lease payments, Finance Lease us-gaap_FinanceLeaseRightOfUseAssetAmortization Finance Lease, Right-of-Use Asset, Amortization dei_LocalPhoneNumber Local Phone Number us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount Present value discount, Finance Lease us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity Line of Credit Facility, Remaining Borrowing Capacity 2027, Finance Lease us-gaap_TableTextBlock Notes Tables 2028, Finance Lease 2029, Finance Lease Accounting Standards Update and Change in Accounting Principle [Table] us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity Operating Lease for Office, Manufacturing and Warehouse Space in Plano, Texas [Member] Represents the operating lease arrangement related to the office, manufacturing and warehouse space in Plano, Texas. Accounting Standards Update and Change in Accounting Principle [Text Block] Plan 2017 [Member] Represents 2017 stock incentive plan. 2026, Finance Lease Selling, general and administrative expenses Bad debt recovery us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation Share-based compensation, net Net cash used in investing activities us-gaap_ProductWarrantyExpense Product Warranty Expense Other noncurrent liabilities Line of Credit Facility, Lender [Domain] Operating Lease for Warehouse Space in Roanoke, Virginia [Member] Represents the operating lease agreement for warehouse space in Roanoke, Virginia. us-gaap_StockIssuedDuringPeriodSharesNewIssues Temporary Equity, Shares Outstanding (in shares) Raw materials Production supplies Line of Credit Facility [Table] Lender Name [Axis] us-gaap_SegmentReportingOtherItemAmount Other (1) us-gaap_LiabilitiesAndStockholdersEquity Total liabilities, redeemable common stock and shareholders' equity Finished goods Work in process UNITED STATES (Increase) decrease in: Retained earnings Employees, Consultant and Non-employee Directors [Member] Represents information related to employees, consultant and non-employee directors. us-gaap_StockholdersEquity Total shareholders’ equity Balances Balances One Customer [Member] Represents one customer. us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Inventory Disclosure [Text Block] us-gaap_OperatingLeaseLiabilityNoncurrent Operating Lease, Liability, Noncurrent Class of Stock [Axis] us-gaap_OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Schedule of Inventory, Current [Table Text Block] Class of Stock [Domain] Inventory, Current [Table] Total Operating lease liability Lessee, Lease Liability, Maturity [Table Text Block] Tabular disclosure of future payments for operating and finance lease obligations. Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] us-gaap_LongTermLoansPayable Loans Payable, Noncurrent us-gaap_OperatingLeaseLiabilityCurrent Operating Lease, Liability, Current us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] us-gaap_FinanceLeaseLiabilityCurrent Finance Lease, Liability, Current us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] us-gaap_FinanceLeaseLiabilityNoncurrent Finance Lease, Liability, Noncurrent us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] us-gaap_OperatingLeaseRightOfUseAsset Operating Lease, Right-of-Use Asset us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total undiscounted lease payments, Operating Lease us-gaap_FinanceLeasePrincipalPayments Principal payments on finance leases Finance Lease, Principal Payments us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Present value discount, Operating Lease Total Finance lease liability occ_ConcentrationRiskNumberOfCustomers Concentration Risk, Number of Customers Number of customers for a concentration risk benchmark. 2029, Operating Lease us-gaap_FinanceLeaseRightOfUseAsset Finance Lease, Right-of-Use Asset, after Accumulated Amortization us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]