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Note 12 - Stock-based Compensation - Stock Option Activity (Details) us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities Accounts payable and accrued expenses Asset Purchase Agreement [Member] Represents the asset purchase agreement. Note 12 - Stock-based Compensation - Restricted Stock Awards Activities (Details) Note 13 - Commitments and Contingencies - Operating Lease Information (Details) Note 13 - Commitments and Contingencies - Lessee, Operating Lease, Liability, to be Paid, Maturity (Details) Notes To Financial Statements Director 1 [Member] Represents director 1. Notes To Financial Statements [Abstract] Director 2 [Member] Represents director 2. Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Business Description and Basis of Presentation [Text Block] Weighted average number of common shares outstanding Overhead allocation Gross amount of overhead allocated to inventory. chuc_DisposalGroupIncludingDiscontinuedOperationSellingAndMarketingExpense Sales and marketing Amount of selling and marketing expense attributable to disposal group, including, but not limited to, discontinued operation. Lease at 15902-06 Manufacture Lane, Huntington Beach, CA [Member] Represents lease at 15902-06 Manufacture Lane, Huntington Beach, CA. chuc_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpense Research and development Amount of research and development expense attributable to disposal group, including, but not limited to, discontinued operation. 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500,000,000 shares authorized; 280,553,242 and 270,653,242 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively us-gaap_ExtinguishmentOfDebtAmount Extinguishment of Debt, Amount Three Customers [Member] Represents the three customers Supplier [Axis] Schedule of Inventory, Current [Table Text Block] Supplier [Domain] Proceeds from issuance of common shares Proceeds from Issuance of Common Stock Accounts payable Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Accounts Payable and Accrued Liabilities, Current Issuance of common stock to acquire assets us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables chuc_NumberOfMajorVendors Number of Major Vendors Represents the number of major vendors. Issuance of common stock to acquire assets (in shares) chuc_NumberOfMajorCustomers Number of Major Customers Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. Disposal Group Classification [Axis] Disposal Group Classification [Domain] Subsequent Events [Text Block] Concentration Risk Type [Axis] Concentration Risk Disclosure [Text Block] Nonrelated Party [Member] Related Party [Member] Accrued compensation Significant Accounting Policies [Text Block] Proceeds from issuance of notes payable Amortization of operating lease right-of-use asset us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less present value discount Lease liabilities, net of current portion Outstanding, options, contractual life (Year) Other accrued expenses Operating lease liabilities as of June 30, 2026 us-gaap_OperatingLeaseLiability Operating Lease, Liability Lease liabilities Options vested and exercisable, weighted average remaining contractual life (Year) Proceeds from sale of intellectual property us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive Thereafter Accounts Receivable [Member] us-gaap_ProceedsFromSaleOfProductiveAssets Proceeds from Sale of Productive Assets Concentration Risk Type [Domain] us-gaap_ProceedsFromSaleOfOtherReceivables Proceeds from Sale of Other Receivables us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo Year Ending December 31, 2028 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour Year Ending December 31, 2030 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree Year Ending December 31, 2029 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths Year Ending December 31, 2027 Income Tax Jurisdiction, Domestic Federal [Member] Income Tax Jurisdiction, Domestic State and Local [Member] Statement of Stockholders' Equity [Abstract] Statement of Cash Flows [Abstract] Long-Term Debt, Type [Domain] Equity Components [Axis] us-gaap_IncreaseDecreaseInOperatingLeaseLiability Lease liabilities Equity Component [Domain] Equity [Text Block] Additional Paid-in Capital [Member] Retained Earnings [Member] Cost of goods sold - product revenue Property, plant and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Property, plant, and equipment, gross Allowance for doubtful accounts Subsequent Event Type [Domain] Subsequent Event [Table] Subsequent Event Type [Axis] Sale of Stock [Axis] Machinery and Equipment [Member] Share-Based Payment Arrangement, Option, Activity [Table Text Block] Fair Value Disclosures [Text Block] Share-Based Payment Arrangement, Option [Member] Supplemental disclosure of cash flow information Accounts receivable Current liabilities: Gain on sale of intellectual property Gain on sale of intellectual property us-gaap_LiabilitiesCurrent Total current liabilities Michael King [Member] Represents Michael King. Supplier Concentration Risk [Member] us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss Income from operations Accretion of debt discount Accounts receivable, net Customer Concentration Risk [Member] us-gaap_TaxCreditCarryforwardAmount Tax Credit Carryforward, Amount Lease, Cost [Table Text Block] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod Options forfeited/expired (in shares) Other Commitments [Table] Net cash provided by operating activities - discontinued operations us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment Accumulated depreciation Options forfeited/expired, weighted average exercise price (in dollars per share) General and administrative us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Loss before provision for income taxes Debt extinguishment loss Debt extinguishment loss Gain (Loss) on Extinguishment of Debt Additional paid-in capital Customer One and Customer Two [Member] Represents the collective of customers one and customers two. Debt Disclosure [Text Block] Debt Conversion, Name [Domain] Debt Conversion Description [Axis] Prepaid expenses and other current assets Use of Estimates, Policy [Policy Text Block] us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Issuance of common stock for cash Stock Issued During Period, Value, New Issues Stock compensation us-gaap_DebtInstrumentCarryingAmount Total August Note [Member] Represents the August note. us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Current assets: us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures Forfeiture of restricted stock awards us-gaap_AssetsCurrent Total current assets us-gaap_AccountsReceivableSale Accounts Receivable, Sale Stock compensation (in shares) us-gaap_GrossProfit Gross profit Issuance of common stock for cash (in shares) Stock Issued During Period, Shares, New Issues Conversion of Series A convertible preferred stock (in shares) Changes in operating assets and liabilities: Debt Instrument, Name [Domain] us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited Forfeiture of restricted stock awards (in shares) us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage us-gaap_DebtInstrumentInterestRateDuringPeriod Debt Instrument, Interest Rate During Period Related and Nonrelated Parties [Axis] Class of Stock [Domain] us-gaap_DebtInstrumentPeriodicPaymentPrincipal Debt Instrument, Periodic Payment, Principal us-gaap_DebtInstrumentPeriodicPayment Debt Instrument, Periodic Payment Schedule of Long-Term Debt Instruments [Table] us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations Net cash used in operating activities - continuing operations Cash Provided by (Used in) Operating Activity, Continuing Operation Debt Instrument [Axis] Cash Flows from Operating Activities: Cash Flows from Investing Activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash used in operating activities Cash Flows from Financing Activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash provided by investing activities us-gaap_SharesIssuedPricePerShare Shares Issued, Price Per Share us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by financing activities Accounting Policies [Abstract] Customer One [Member] Represents customer one. Loss from continuing operations, basic and diluted (in dollars per share) Net income (loss) from continuing operations Income (loss) from continuing operations after income taxes Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income Statement [Abstract] us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax Income from discontinued operations, before income tax Income from discontinued operations, basic and diluted (in dollars per share) Four Venders [Member] The purchased from four different venders. Income Tax Contingency [Table] Customer C [Member] Represents information regarding Customer C. Net income (loss) Net income (loss) Customer D [Member] Customer D. Customer F [Member] Customer F. Customer E [Member] Customer E. us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation Income tax provision us-gaap_DebtConversionOriginalDebtAmount1 Debt Conversion, Original Debt, Amount Income Tax Disclosure [Text Block] Restricted Stock [Member] Accounting Standards Update and Change in Accounting Principle [Table] us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense General and administrative Related and Nonrelated Parties [Domain] Trade Show Booth [Member] Related to trade show booth. Significant Accounting Policies [Policy Text Block] Disclosure of significant accounting policies. Issuance of warrant in connection with a settlement of accounts payable Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Vendor E [Member] Represents vendor E. Williamsville Lease [Member] Represents information related to Williamsville lease. Vendor D [Member] Related to vendor d. Vendor C [Member] Related to vendor c. Vendor B [Member] Related to vendor b. Options vested and exercisable (in shares) Options vested and exercisable, weighted average exercise price (in dollars per share) Lease at 5331 Production Drive, Huntington Beach, Ca [Member] Represents Lease at 5331 Production Drive, Huntington Beach, Ca. Conversion of Series A convertible preferred stock Options vested and exercisable, aggregate intrinsic value Customer A [Member] Related to Customer A. Customer B [Member] Related to customer B. Vendor A [Member] Related to vendor a. Don Polly, LLC [Member] Related to Don Polly, LLC. Don Polly [Member] Related to Don Polly. EID Loan [Member] Related to EID loan. Statement of Financial Position [Abstract] us-gaap_NonoperatingIncomeExpense Total other income (loss) us-gaap_AssetsNoncurrent Total non-current assets Cash paid for income taxes us-gaap_RepaymentsOfNotesPayable Repayment of notes payable Accrued Purchases Amount of accrued purchases. chuc_CashProceedsFromIssuanceOfCommonStock Cash Proceeds From Issuance of Common Stock Amount of cash proceeds from the issuance of common stock. chuc_RepaymentsOfDebtForIssuanceOfCommonStock Repayments of Debt for Issuance of Common Stock Amount for the repayments of debt as a result from the issuance of common stock. us-gaap_OtherAssetsNoncurrent Other assets us-gaap_IncreaseDecreaseInDeferredRevenue Deferred revenue chuc_WorkingCapital Working Capital The working capital is the difference for the company's current assets and current liabilities. Warrant [Member] dei_DocumentType Document Type Operating costs and expenses: Document Information [Line Items] dei_DocumentQuarterlyReport Document Quarterly Report Concentration Concentration Risk, Percentage us-gaap_LesseeOperatingLeaseTermOfContract Lessee, Operating Lease, Term of Contract us-gaap_LesseeOperatingLeaseRenewalTerm Lessee, Operating Lease, Renewal Term Weighted-average remaining lease term – operating leases (in years) (Year) Document Information [Table] Antidilutive securities (in shares) Antidilutive Securities [Axis] Nonvested Restricted Stock Shares Activity [Table Text Block] dei_EntityInteractiveDataCurrent Entity Interactive Data Current dei_DocumentTransitionReport Document Transition Report us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding Diluted (in shares) us-gaap_OperatingExpenses Total operating costs and expenses Net earnings (loss) per share: us-gaap_WeightedAverageNumberOfSharesOutstandingBasic Basic (in shares) us-gaap_DebtInstrumentTerm Debt Instrument, Term Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] us-gaap_EarningsPerShareBasic Net earnings (loss) per share, basic and diluted (in dollars per share) Research Tax Credit Carryforward [Member] us-gaap_StockIssued1 Issuance of common stock us-gaap_NotesPayable Notes Payable Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Notes Payable, Other Payables [Member] Notes payable, net Note payable, net of current portion Customer G [Member] Represents the customer G Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Office Equipment [Member] Income Tax Jurisdiction [Axis] The 2019 Omnibus Incentive Plan [Member] Related to the 2019 omnibus incentive plan. Customer deposits Document Fiscal Period Focus Customer [Domain] Document Fiscal Year Focus us-gaap_DepreciationAndAmortization Depreciation, Depletion and Amortization, Nonproduction Amendment Flag Common Stock [Member] Exchange accounts payable with a note payable The amount of accounts payable being exchanged for notes payable. dei_DocumentPeriodEndDate Document Period End Date Property, Plant, and Equipment [Text Block] Long-Lived Asset, Class [Domain] Corporate Headquarters Lease [Member] Related to corporate headquarters lease. Legal Entity [Axis] chuc_LeaseMonthlyRent Lease, Monthly Rent The amount of monthly lease rent. Variable lease cost Operating lease expense Short-term lease rent expense us-gaap_LeaseCost Total rent expense Inventory Purchases [Member] Related to inventory purchases. dei_EntityFileNumber Entity File Number Entity Tax Identification Number Entity [Domain] Entity Central Index Key Entity Registrant Name dei_EntityCurrentReportingStatus Entity Current Reporting Status Entity Incorporation, State or Country Code Issuance of common stock in lieu of redemption of notes payable Equity impact of the value of new stock issued during the period for debt redemption. Current Fiscal Year End Date Issuance of common stock in lieu of redemption of notes payable (in shares) Number of new stock issued during the period for debt redemption. Entity Filer Category dei_EntityShellCompany Entity Shell Company Entity Emerging Growth Company Entity Small Business us-gaap_OperatingIncomeLoss Loss from operations Operating Income (Loss) Cash us-gaap_OperatingLossCarryforwards Operating Loss Carryforwards Research and development Amount of expense or reversal for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Conversion of April 2022 Note to Shares Under Subscription Agreement [Member] Represents Conversion of April 2022 Note to Shares Under Subscription Agreement . dei_EntityAddressStateOrProvince Entity Address, State or Province dei_EntityAddressCityOrTown Entity Address, City or Town Inventory, Current [Table] us-gaap_InterestExpenseNonoperating Interest expense Accumulated deficit dei_EntityAddressAddressLine1 Entity Address, Address Line One dei_CityAreaCode City Area Code dei_LocalPhoneNumber Local Phone Number dei_EntityAddressPostalZipCode Entity Address, Postal Zip Code Preferred Stock [Member] Class of Stock [Axis] dei_EntityCommonStockSharesOutstanding Entity Common Stock, Shares Outstanding (in shares) Earnings Per Share [Text Block] Chief Financial Officer [Member] Chief Operating Officer [Member] President [Member] Accrued income taxes Long-Lived Assets Held-for-Sale, Name [Domain] Property, Plant, and Equipment [Table] us-gaap_CommonStockParOrStatedValuePerShare Common Stock, Par or Stated Value Per Share (in dollars per share) Basis of Accounting, Policy [Policy Text Block] Other income (expense): Long-Lived Asset, Class [Axis] Sale of Stock [Domain] us-gaap_Assets TOTAL ASSETS Long-Lived Asset, Held-for-Sale, Type [Axis] Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] us-gaap_InterestPaid Debt Instrument, Periodic Payment, Interest Income from discontinued operations, net of tax Income from discontinued operations, net of tax Discontinued operations: Customer [Axis] Deferred revenue Depreciation and amortization us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold Cost of goods sold - product revenue us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense Interest expense Disposal Group Name [Domain] us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss Gross profit Cash paid for interest Inventory Disclosure [Text Block] chuc_StockIssuedToSettleOutstandingAccountsPayable Issuance of common stock to settle outstanding account payable The fair value of stock issued in noncash financing activities. Finished goods Fixed Assets [Member] Represents fixed assets. us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue Product revenue, net Inventory Supplies [Member] Represents inventory supplies. us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense Total operating expenses Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table Text Block] Inventories, net Total Disposal Group Name [Axis] Raw materials chuc_OwnershipPercentage Ownership Percentage Represents the holders of the company's outstanding voting securities. us-gaap_StockholdersEquity Total stockholders' equity Equity, Attributable to Parent Balance Balance Four Customers [Member] Represents four customers. July 2023 Note Financing [Member] Represents July 2023 Note Financing. Stock, Class of Stock [Table] Concentration Risk Benchmark [Axis] us-gaap_InventoryValuationReserves Less: inventory reserves Concentration Risk Benchmark [Domain] Inventory in transit Right-of-use asset, net Operating Lease, Right-of-Use Asset ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] Property, Plant, and Equipment [Table Text Block] Product revenue, net ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Commitments and Contingencies Revenue, Segment Benchmark [Member]