Equity Components [Axis] Common Stock [Member] Additional Paid-in Capital [Member] AOCI Attributable to Parent [Member] Retained Earnings [Member] Treasury Stock, Common [Member] Geographical [Axis] UNITED STATES UNITED KINGDOM DENMARK Long-Lived Asset, Class [Axis] Building [Member] Land [Member] Office Machinery and Equipment [Member] Software [Member] Rental Assets [Member] Furniture, Fixtures and Improvements [Member] Europe [Member] Product and Service [Axis] Deferred Revenue [Member] Customer Technical Support Obligations [Member] Product Warranty [Member] Business Combination [Axis] Precision Acoustics Limited [Member] Scenario [Axis] 2026 FY [Member] 2027 FY [Member] Customer [Axis] One Customer [Member] Concentration Risk Benchmark [Axis] Revenue Benchmark [Member] Concentration Risk Type [Axis] Customer Concentration Risk [Member] Accounts Receivable [Member] Two Customer [Member] Intangible Asset, Finite-Lived, Class [Axis] Customer Relationships [Member] Noncompete Agreements [Member] Technology-Based Intangible Assets [Member] Patents [Member] Legal Entity [Axis] Coda Octopus Engineering Inc [Member] Coda Octopus Products Limited [Member] Coda Octopus Martech Limited [Member] Plan Name [Axis] 2017 Stock Incentive Plan [Member] 2021 Stock Incentive Plan [Member] Award Type [Axis] Restricted Stock [Member] 2017 and 2021 Plan [Member] Restricted Stock Units (RSUs) [Member] Segments [Axis] Marine Technology Products Business [Member] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Segment Reporting [Member] Acoustic Sensors and Materials Business [Member] Defense Engineering Services Business [Member] Corporate Segment [Member] Americas [Member] Acoustic Sensors and Materials Business ("PAL") [Member] Australia/Asia [Member] Middle East/Africa [Member] Equipment Sales [Member] Equipment Rentals [Member] Software Sales [Member] Engineering Parts [Member] Service [Member] Timing of Transfer of Good or Service [Axis] Transferred at Point in Time [Member] Transferred over Time [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Entity Listing, Par Value Per Share Statement of Financial Position [Abstract] ASSETS CURRENT ASSETS Cash and Cash Equivalents Accounts Receivable, net Inventory Unbilled Receivables Prepaid Expenses Other Current Assets Total Current Assets FIXED ASSETS Property and Equipment, net Right of Use Assets Total Fixed Assets, net OTHER ASSETS Goodwill Intangible Assets, net Total Other Assets Total Assets LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES Accounts Payable Current portion of operating lease liabilities Accrued Expenses and Other Current Liabilities Deferred Revenue Total Current Liabilities LONG TERM LIABILITIES Deferred Tax Liability, net Non-current operating lease liabilities, net Deferred Revenue, net Total Long Term Liabilities Total Liabilities Commitments and contingencies STOCKHOLDERS’ EQUITY Common Stock, $.001 par value; 150,000,000 shares authorized, 11,291,850 issued and 11,280,754 outstanding as of July 31, 2026 and 11,280,368 shares issued and 11,270,575 outstanding as of October 31, 2025 Preferred Stock $.001 par value; 5,000,000 shares authorized, zero issued and outstanding as of July 31, 2026 and October 31, 2025 Treasury Stock 11,096 shares as of July 31, 2026 and 9,793 shares at October 31, 2025 Additional Paid-in Capital Accumulated Other Comprehensive Loss Accumulated Earnings (Deficit) Total Stockholders’ Equity Total Liabilities and Stockholders’ Equity Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Treasury stock, shares Income Statement [Abstract] Net Revenues Cost of Revenues Gross Profit OPERATING EXPENSES Research & Development Selling, General & Administrative Total Operating Expenses INCOME FROM OPERATIONS OTHER INCOME Other Income Interest Income Total Other Income, net INCOME BEFORE INCOME TAX EXPENSE INCOME TAX (EXPENSE) BENEFIT Current Tax (Expense) Deferred Tax Benefit Total Income Tax (Expense) NET INCOME NET INCOME PER SHARE: Basic Diluted WEIGHTED AVERAGE SHARES: Basic Diluted NET INCOME Foreign Currency Translation Adjustment Total Other Comprehensive (Loss) Income COMPREHENSIVE INCOME Statement [Table] Statement [Line Items] Balance Balance, shares Stock-based compensation Stock issued for options exercised and stock grants Stock issued for options exercised and stock grants, shares Foreign currency translation adjustment Treasury Stock Treasury Stock, shares Net Income Balance Balance, shares Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation of property and equipment Amortization of intangible assets Stock-based compensation Deferred income taxes Gain on sale of asset Provision for contingent consideration liability (PAL Earn-out) Allowance for credit loss Non cash operating lease expense (Increase) decrease in operating assets: Accounts receivable, net Inventory Unbilled receivables Prepaid expenses Other current assets Increase (decrease) in operating liabilities: Accounts payable and other current liabilities Deferred revenue Net Cash provided by Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES Purchases of property and equipment Purchases of other intangible assets Proceeds from the sale of property and equipment Net Cash used in Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Purchase of treasury stock Net Cash used in Financing Activities EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS NET INCREASE IN CASH AND CASH EQUIVALENTS CASH AND CASH EQUIVALENTS AT THE BEGINNING OF THE PERIOD CASH AND CASH EQUIVALENTS AT THE END OF THE PERIOD SUPPLEMENTAL CASH FLOW INFORMATION Cash paid for taxes Accounting Policies [Abstract] ACCOUNTING POLICIES AND SUPPLEMENTAL DISCLOSURES Revenue Recognition REVENUE RECOGNITION Cost Of Revenues COST OF REVENUES Fair Value Disclosures [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS Foreign Currency [Abstract] FOREIGN CURRENCY TRANSLATION Operating Leases OPERATING LEASES Organization, Consolidation and Presentation of Financial Statements [Abstract] COMPOSITION OF CERTAIN FINANCIAL STATEMENT CAPTIONS Contracts In Progress CONTRACTS IN PROGRESS Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] CONTINGENT CONSIDERATION – PRECISION ACOUSTICS LIMITED (“PAL”) Risks and Uncertainties [Abstract] CONCENTRATIONS Accounting Changes and Error Corrections [Abstract] RECENT ACCOUNTING PRONOUNCEMENTS Intangible Asset, Goodwill and Other [Abstract] GOODWILL AND IDENTIFIED INTANGIBLE ASSETS Earnings Per Share [Abstract] EARNINGS PER SHARE Equity [Abstract] 2017 AND 2021 STOCK INCENTIVE PLANS (SIPs) Segment Reporting [Abstract] SEGMENT ANALYSIS Revenue from Contract with Customer [Abstract] DISAGGREGATION OF NET REVENUES Income Tax Disclosure [Abstract] INCOME TAXES Principles of Consolidation Use of Estimates SCHEDULE OF OPERATING LEASE COSTS SCHEDULE OF MATURITIES OF LEASE LIABILITIES SCHEDULE OF INTEREST RATES AND AMOUNT HELD IN CERTIFIED DEPOSIT AND INTEREST BEARING ACCOUNTS SCHEDULE OF COMPONENTS OF INVENTORY SUMMARY OF OTHER CURRENT ASSETS SCHEDULE OF FIXED ASSETS SCHEDULE OF PROPERTY AND EQUIPMENT, NET, BY GEOGRAPHIC AREAS SCHEDULE OF ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES SCHEDULE OF OTHER INCOME SCHEDULE OF DEFERRED REVENUE SCHEDULE OF POTENTIAL EARNOUT PROVISION AMOUNTS SCHEDULE OF INTANGIBLE ASSETS SCHEDULE OF GOODWILL SCHEDULE OF COMPUTATION OF BASIC AND FULLY DILUTED LOSS PER COMMON SHARE SCHEDULE OF SEGMENT REPORTING INFORMATION SCHEDULE OF DISAGGREGATE OF REVENUE FROM CONTRACTS FOR SALE WITH CUSTOMERS BY GEOGRAPHIC LOCATION Commission costs Schedule Of Operating Lease Costs Lease Liability Future minimum lease payments Remaining life of the lease in Years Discount Rate Schedule Of Maturities Of Lease Liabilities 2026 (remaining 3 months) 2027 2028 2029 2030 Thereafter Total Future minimum lease payments Imputed Interest DepositLiabilitiesTypeTable [Table] Deposit Interest Non bank interest Total Interest Income Raw materials and parts Work in progress Finished goods Total Inventory Deposits and other assets Employee Retention Credit Receivables Other Foreign Sales Tax Receivables Total Other Current Assets Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Line Items] Totals Less: accumulated depreciation Total Property and Equipment, net Right of use assets, net Total Fixed Assets, net GeographicAreasLongLivedAssetsTable [Table] Accruals Other Tax Payables Commitment and Contingent Liability - PAL Earn Out Employee Related Total Accrued Expenses and Other Current Liabilities Grant Income Gain on sale of asset Other Total Other Income Interest Received Discount rate Current rate Depreciation expense DeferredRevenueTable [Table] Total Deferred Revenues (“Current”) Unbilled receivables Deferred revenue Current deferred revenues Deferred revenue non-current Business Combination [Table] Business Combination [Line Items] Revenue Target Pre-Tax Profit Target Earn Out Payable based on Targets - historic rate Business acquisition earn out expenses Contingent consideration liability Foreign currency exchange rate Concentration Risk [Table] Concentration Risk [Line Items] Revenue Concentration risk, percentage Receivables Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Line Items] Average lives of intangible assets Finite lived intangible assets, gross Total intangible assets, accumulated amortization Total intangible assets - net Goodwill [Table] Goodwill [Line Items] Basic weighted average common shares outstanding Unexercised portion of options and restricted stock awards Diluted outstanding shares Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Number of shares allocated for issuance Share-based compensation arrangement by share-based payment award, granted Treasury stock created Stock issued during period, shares, new issues Awards granted Options exercised Shares issued Restricted stock awards forfeited Shares available for issuance Stock compensation expense Segment Reporting [Table] Segment Reporting [Line Items] Other Income Income Tax (Expense) Benefit Supplemental Disclosures Total Assets Total Liabilities Revenues from Intercompany Sales - eliminated from sales above Depreciation and Amortization Purchases of Long-lived Assets Number of reportable segments Disaggregation of Revenue [Table] Disaggregation of Revenue [Line Items] Total Revenues Effective tax rate Current income tax expense Deferred income tax benefit Revenue Recognition [Text Block] Cost of Revenues [Text Block] Marine Technology Products Business [Member] Segment Reporting [Member] Acoustic Sensors and Materials Business [Member] Defense Engineering Services Business [Member] Supplemental Disclosures Abstract Revenues from intercompany sales. Future minimum operating lease payments. Precision Acoustics Limited [Member] Interest bearing deposits discount rate. Interest bearing deposits current rate. Fixed assets net. 2026 FY [Member] 2027 FY [Member] Business combination contingent consideration revenue target. Business combination contingent consideration pre tax profit target. Business combination contingent consideration earn out payable amount. Acoustic Sensors and Materials Business ("PAL") [Member] Australia/Asia [Member] Middle East/Africa [Member] Equipment Sales [Member] Equipment Rentals [Member] Software Sales [Member] Employee retention credit receivables. Engineering Parts [Member] Property, plant and equipment and operating lease right-of-use asset. Grant income. Contracts in Progress [Text Block] One Customer [Member] Two Customer [Member] 2021 Stock Incentive Plan [Member] 2017 Stock Incentive Plan [Member] 2017 and 2021 Plan [Member] Share based compensation arrangement by share based payment award options exercises in period. Office Machinery and Equipment [Member] Software [Member] Rental Assets [Member] Furniture, Fixtures and Improvements [Member] Deferred Revenue [Member] Customer Technical Support Obligations [Member] Product Warranty [Member] Coda Octopus Engineering Inc [Member] Coda Octopus Products Limited [Member] Coda Octopus Martech Limited [Member] Provision for contingent consideration liability. Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. Assets, Current FixedAssetsNet Other Assets, Noncurrent Assets Liabilities, Current Liabilities, Noncurrent Liabilities Treasury Stock, Value Equity, Attributable to Parent Liabilities and Equity Gross Profit Operating Expenses Operating Income (Loss) Nonoperating Income (Expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Current Income Tax Expense (Benefit) Income Tax Expense (Benefit) Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Shares, Outstanding Share-Based Payment Arrangement, Noncash Expense Gain (Loss) on Sale of Properties Increase (Decrease) in Accounts Receivable Increase (Decrease) in Inventories Increase (Decrease) in Contract with Customer, Asset Increase (Decrease) in Prepaid Expense Increase (Decrease) in Other Current Assets Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments to Acquire Property, Plant, and Equipment Payments to Acquire Intangible Assets Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Payments for Repurchase of Equity Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Lessee, Operating Lease, Liability, to be Paid Lessee, Operating Lease, Liability, Undiscounted Excess Amount Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization PropertyPlantAndEquipmentAndOperatingLeaseRightOfUseAsset Contract with Customer, Liability