Document And Entity Information
Statistical Measurement [Axis]
blgo_PolicyTable
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Summary of Significant Accounting Policies
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 4 - Debt Obligations
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 5 - Share-based Compensation
Trading Arrangements, by Individual [Table]
Note 6 - Warrants
Material Terms of Trading Arrangement [Text Block]
Note 7 - Accounts Payable and Accrued Expenses
Note 8 - Noncontrolling Interest - Clyra Medical
Revenue from Contract with Customer Benchmark [Member]
Employee Retention Program [Member]
Related to employee retention program.
Note 11 - Business Segment Information
Note 12 - Leases
Note 2 - Summary of Significant Accounting Policies - Summary of Cash Balances (Details)
Minimum [Member]
Note 2 - Summary of Significant Accounting Policies - Credit Concentration (Details)
Term Loan Agreement [Member]
The term loan agreement with American Express.
Note 2 - Summary of Significant Accounting Policies - Inventory (Details)
Statistical Measurement [Domain]
Note 2 - Summary of Significant Accounting Policies - Other Non-current Assets (Details)
Maximum [Member]
us-gaap_SharePrice
Share Price (in dollars per share)
Note 2 - Summary of Significant Accounting Policies - Stock Options, Valuation Assumptions (Details)
Note 2 - Summary of Significant Accounting Policies - Schedule of Equipment and Leasehold Improvements (Details)
us-gaap_IncomeLossFromEquityMethodInvestments
Gain on investment in South Korean joint venture
Note 4 - Debt Obligations - Schedule of Debt (Details)
Litigation Case [Domain]
Note 5 - Share-based Compensation - Stock Options (Details)
Note 6 - Warrants - Warrants Outstanding (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 6 - Warrants - Assumptions Used to Determine Fair Value of Warrants (Details)
Note 7 - Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Details)
Accounts payable and accrued expenses
Accounts payable and accrued expenses
Note 8 - Noncontrolling Interest - Clyra Medical - Common Shares Outstanding (Details)
Note 8 - Noncontrolling Interest - Clyra Medical - Valuation Assumptions (Details)
Note 8 - Noncontrolling Interest - Clyra Medical - Warrants Outstanding (Details)
Note 8 - Noncontrolling Interest - Clyra Medical - Summary of Accounts Payable and Accrued Expenses (Details)
Note 8 - Noncontrolling Interest - Clyra Medical - Schedule of Lease Maturity (Details)
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Note 11 - Business Segment Information - Segment Information (Details)
Note 12 - Leases - Schedule of Future Minimum Lease Payments (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Counterparty Name [Axis]
Secured Debt [Member]
Weighted average exercise price per share, Expired (in dollars per share)
Weighted average exercise price, Granted (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)
Weighted average exercise price, Exercised (in dollars per share)
blgo_NumberOfPatentsAcquired
Number of Patents Acquired
Represents the number of patents acquired for the company.
Valuation Technique, Black-Scholes-Merton Model [Member]
blgo_ProceedsFromIssuanceOfCommonStockGross
Proceeds From Issuance of Common Stock, Gross
Represents the gross proceeds from the issuance of common stock.
Board of Directors, Employees, and Consultants [Member]
Represents the board of directors, employees, and consultants.
us-gaap_LesseeOperatingLeaseDiscountRate
Lessee, Operating Lease, Discount Rate
Other income (expense):
Litigation Case [Axis]
Leasehold Improvements [Member]
Weighted Average [Member]
Counterparty Name [Domain]
us-gaap_IncreaseDecreaseInInventories
Inventories
us-gaap_SharesOutstanding
Shares, Outstanding (in shares)
Balance (in shares)
Balance (in shares)
us-gaap_PreferredStockDividendRatePercentage
Preferred Stock, Dividend Rate, Percentage
Segment Reporting [Text Block]
blgo_WarrantsOutstandingWeightedAveragePricePerShare
Outstanding Warrants, Weighted Average Price Per Share (in dollars per share)
Outstanding Warrants, Weighted Average Price Per Share (in dollars per share)
Represents the weighted average price per share for outstanding warrants.
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain]
Award Type [Axis]
Segment Reporting [Table Text Block]
Adjustments to reconcile net loss to net cash used in operating activities:
Preferred Series A, $0.00067 Par Value, 50,000,000 Shares Authorized, no Shares Issued and Outstanding, at March 31, 2026 and December 31, 2025
Plan Name [Axis]
us-gaap_Liabilities
Total liabilities
Plan Name [Domain]
Pending Litigation [Member]
Granted Warrants, Weighted Average Price Per Share (in dollars per share)
Represents the weighted average exercise price of warrants granted.
Granted warrants, balance (in shares)
Represents the warrants granted in period.
Litigation Status [Axis]
Litigation Status [Domain]
us-gaap_WarrantsAndRightsOutstandingTerm
Warrants and Rights Outstanding, Term (Month)
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Consolidation Items [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ (deficit) equity
BEST [Member]
Represents the B.E.S.T. reporting segment.
Title and Position [Axis]
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other assets
Stock option compensation expense
us-gaap_ShareBasedCompensation
Selling, general and administrative expenses
Subsequent Event [Member]
Consolidation Items [Domain]
blgo_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
Thereafter
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in after the 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).
Lessee, Lease, Description [Table]
Preferred Class A [Member]
us-gaap_PreferredStockDividendsAndOtherAdjustments
Preferred Stock Dividends and Other Adjustments
Changes in assets and liabilities:
Warrants Outstanding for Noncontrolling Interest [Table Text Block]
Represents the tabular disclosure for warrants outstanding from noncontrolling interests.
Convertible Preferred Stock, Shares Issued (in shares)
Convertible Preferred Stock, Shares Outstanding (in shares)
Convertible Preferred Stock, Shares Authorized (in shares)
Clyra Medical Technologies [Member]
Related to the entity Clyra Medical Technologies.
Series B Preferred Stock [Member]
Convertible Preferred Stock, Par Value (in dollars per share)
Warrant In Connection With Convertible Note [Member]
Represents warrant in connection with convertible note.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash
blgo_FinitelivedTangibleAssetsNet
Tangible assets
Amount after amortization of assets which have physical substance with a finite life.
Series A Preferred Stock [Member]
BLEST [Member]
Related to the entity BLEST.
Net effect of foreign currency translation
Debt Obligations [Member]
Represents debt obligations.
Deposits
Customer Deposit Liability, Current
Amount of customer deposit liability, classified as current.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Antidilutive Securities, Name [Domain]
BioLargo/ONM Lease [Member]
Information related to the BioLargo/ONM lease.
Comprehensive loss:
Statement [Table]
Credit Facility [Axis]
Credit Facility [Domain]
Revolving Credit Facility [Member]
BLEST Lease [Member]
Information related to the BLEST lease.
Equipment [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Clyra Medical stock unit offering (unaudited)
Line of Credit Facility, Lender [Domain]
blgo_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfAdditionalSharesAuthorizedPerYear
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Per Year (in shares)
Represents the number of additional shares authorized per year for issuance under an established share-based compensation plan.
Lender Name [Axis]
Long-Term Debt, Type [Axis]
Issuance of common stock for services (unaudited)
Stock Issued During Period, Value, Issued for Services
Issuance of common stock for services (unaudited) (in shares)
Stock Issued During Period, Shares, Issued for Services (in shares)
Product and Service [Domain]
Odor-No-More [Member]
Information pertaining to the operating segment of Odor-No-More.
Product and Service [Axis]
Clyra Segment [Member]
Information pertaining to the operating segment of Clyra.
Ownership [Axis]
us-gaap_LineOfCredit
Long-Term Line of Credit
Ownership [Domain]
Consolidated Entities [Axis]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Consolidated Entities [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_RepaymentsOfDebt
Repayment of debt obligations
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Lessee, Operating Lease, Liability, to be Paid
Total minimum lease payments
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Operating Lease, Weighted Average Discount Rate, Percent
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Options outstanding, Expired (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
December 31, 2027
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
Options outstanding, Expired (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
December 31, 2026
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in dollars per share)
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options outstanding, balance (in shares)
Options outstanding, balance (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
December 31, 2029
Nature of Expense [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Weighted average exercise price, balance (in dollars per share)
Weighted average exercise price, balance (in dollars per share)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
December 31, 2028
Statement [Line Items]
Aggregate intrinsic value, balance
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
December 31, 2030
Common stock, shares issued (in shares)
Award Type [Domain]
Risk free interest rate
Common stock, shares authorized (in shares)
Expected volatility
Expected dividend yield
Proceeds from Clyra Medical debt obligations
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Clyra Medical dividend Series A Preferred stock
us-gaap_ExtinguishmentOfDebtAmount
Extinguishment of Debt, Amount
Common stock, $0.00067 Par Value, 550,000,000 Shares Authorized, 319,699,928 and 317,377,777 Shares Issued, at March 31, 2026 and December 31, 2025
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity
Fair Value of Financial Instruments, Policy [Policy Text Block]
blgo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value
Fair value of options granted during the period. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.
Schedule of Inventory, Current [Table Text Block]
Proceeds from sale of common stock, net of offering costs
Proceeds from Issuance of Common Stock
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Weighted average price, balance (in dollars per share)
Weighted average price, balance (in dollars per share)
Schedule of Cash and Cash Equivalents [Table Text Block]
Accounts payable
us-gaap_FinanceLeaseLiability
Finance Lease, Liability
us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
Proceeds from Issuance of Preferred Stock and Preference Stock
Accounts payable and accrued expenses
us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Total
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
us-gaap_ProceedsFromLinesOfCredit
Proceeds from Lines of Credit, Total
Legal Matters and Contingencies [Text Block]
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive loss attributable to common stockholders
Finance lease liability, net of current
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total minimum lease payments
Finance lease liability
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less imputed interest
us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo
December 31, 2028
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
December 31, 2027
us-gaap_FinanceLeaseInterestPaymentOnLiability
Finance lease liability
Accrued dividend
Accrued payroll
Significant Accounting Policies [Text Block]
us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear
December 31, 2026
Finance Lease, Liability, to be Paid, Maturity [Table Text Block]
Amortization of right-of-use operating lease assets
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less imputed interest
Weighted average remaining term, Outstanding (Year)
Weighted average remaining term, balance (Year)
Operating lease liabilities, net of current
Total operating lease liabilities
Operating Lease, Liability
Operating lease liabilities
Weighted average remaining term, Vested (Year)
Accounts Receivable [Member]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
Weighted average remaining term, balance (Year)
Debt obligations
Long-term debt, current
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
Expected life in years (Year)
Concentration Risk Type [Domain]
Debt obligations, net of current
Total long-term debt, net of current
CANADA
Vehicle Loan [Member]
Represents vehicle loan.
blgo_PreferredStockConvertibleSaleOfStockAmount
Preferred Stock, Convertible, Sale of Stock Amount
Amount of proceeds in sale of stock for preferred stock to be convertible.
Economic Injury Disaster Loan [Member]
Related to debt under the SBA's Economic Injury Disaster Loan program.
us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Proceeds from Sale of Property, Plant, and Equipment
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Class of Warrant or Right [Table]
us-gaap_LongTermDebt
Long-Term Debt
Statement of Stockholders' Equity [Abstract]
Loss Contingencies [Table]
Class of Warrant or Right [Axis]
Class of Warrant or Right [Domain]
Statement of Cash Flows [Abstract]
Convertible Debt [Member]
Long-Term Debt, Type [Domain]
Equity Components [Axis]
us-gaap_IncreaseDecreaseInOperatingLeaseLiability
Operating lease liabilities
Share-Based Payment Arrangement [Policy Text Block]
Paycheck Protection Program CARES Act [Member]
Represents loan designed to provide funds for small businesses to keep their employees on the payroll.
Equity Component [Domain]
Offsetting Liabilities [Table]
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
blgo_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsDiscountRate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount Rate
The discount rate assumption that is used in valuing an option on its own shares.
Allocation of noncontrolling interest
The amount of stock option expense allocated within noncontrolling itnerest.
AOCI Attributable to Parent [Member]
Noncontrolling interest allocation (unaudited)
This element represents movements included in the statement of changes in stockholders' equity in connection with the allocation of noncontrolling interest from subsidiary's equity issuance.
us-gaap_ClassOfWarrantOrRightOutstanding
Warrants outstanding, balance (in shares)
Warrants outstanding, balance (in shares)
Additional Paid-in Capital [Member]
Retained Earnings [Member]
us-gaap_CostOfGoodsAndServicesSold
Cost of Goods and Services Sold
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Financial Asset, Aging [Axis]
Equipment and leasehold improvements, net
Total equipment and leasehold improvements, net
Compensation and Employee Benefit Plans [Text Block]
Total, at cost
Subsequent Event Type [Domain]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Financial Asset, Aging [Domain]
Property, Plant, and Equipment [Policy Text Block]
Sale of Stock [Axis]
Cost of revenue
Clyra Medical Common Stock [Member]
Represents information related to Clyra Medical common stock.
STOCKHOLDERS’ (DEFICIT) EQUITY:
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Warrant Policy [Policy Text Block]
Disclosure of accounting policy for warrant.
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Share-Based Payment Arrangement, Option [Member]
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Supplemental disclosures of cash flow information
blgo_SubsidiaryParentOwnershipInterest
Subsidiary, Parent Ownership Interest
The percentage ownership interest of a subsidiary owned by the parent.
Current liabilities:
us-gaap_LiabilitiesCurrent
Liabilities, Current
Total current liabilities
Accounts receivable, net of allowances
Customer Concentration Risk [Member]
Income taxes
Pooph Inc. Receivable [Member]
Related to Pooph Inc. receivable.
blgo_CreditLossExpenseNoncash
Credit loss expense
The amount of noncash credit loss adjustments.
us-gaap_PaymentsToAcquireMachineryAndEquipment
Equipment purchases
Lessee, Leases [Policy Text Block]
us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
Cash Provided by (Used in) Operating Activity, Discontinued Operation
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation
Accumulated other comprehensive loss
Stock option compensation expense (unaudited)
us-gaap_DebtCurrent
Total current portion of debt
Non-Qualified Stock Option [Member]
Represents the non-qualified stock option granted pursuant to the employment agreement.
us-gaap_PaymentsToAcquireNotesReceivable
Payments to Acquire Notes Receivable
Additional paid-in capital
Debt Disclosure [Text Block]
Non-controlling interest (Notes 8, 9, 10)
Use of Estimates, Policy [Policy Text Block]
Prepaid expenses and other current assets
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)
Noncontrolling Interest Disclosure [Text Block]
Sale of common stock for cash, net of offering costs of $15 (unaudited)
us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Clyra Medical dividend Series A Preferred stock (unaudited)
us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Subsidiary, Ownership Percentage, Noncontrolling Owner
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
us-gaap_DebtInstrumentCarryingAmount
Long-Term Debt, Gross
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Noncontrolling Interest [Table]
Amortization of debt discount
Current assets:
Stock option exercise (unaudited)
Schedule of Debt [Table Text Block]
us-gaap_AssetsCurrent
Assets, Current
Total current assets
blgo_GrantTerm
Grant Term (Month)
Period for grants earned during the period from non-repayable sum of money awarded to an entity to carry out a specific purpose as provided in grant agreements.
SBA EIDL Loan [Member]
SBA EIDL Loan
us-gaap_GrossProfit
Gross profit
Canadian Government Grants [Member]
The Canadian National Research Institute – Industrial Research Assistance Program (NRC-IRAP) and the National Science and Engineering Research Council of Canada (NSERC).
Sale of common stock for cash, net of offering costs of $15 (unaudited) (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Credit Loss, Financial Instrument [Policy Text Block]
Debt Instrument, Name [Domain]
Vendor Warrants [Member]
Vendor Warrants
Stock option exercise (unaudited) (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)
Options Outstanding, Exercised (in shares)
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Warrants Issued in October 2025 Offering [Member]
Warrants Issued in October 2025 Offering
Depreciation expense
Depreciation
Warrant in Connection with Guaranteed Note [Member]
Warrant in Connection with Guaranteed Note
Class of Stock [Domain]
Consultants and Vendors [Member]
Consultants and Vendors
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)
Common stock issued for services
Consultants [Member]
Represents the Consultants.
Net loss (unaudited)
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
Clyra Office Lease [Member]
Clyra Office Lease
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Credit loss expense
Credit Loss Expense
Represents amount of credit loss expense.
Non Cash Transactions [Policy Text Block]
Accounting policy disclosure for non cash transactions.
Cash flows from operating activities
Cash flows from investing activities
us-gaap_StockOptionPlanExpense
Stock option expense
Raw material
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Cash flows from financing activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
us-gaap_NetCashProvidedByUsedInFinancingActivities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by financing activities
Finished goods
2024 Equity Incentive Plan [Member]
Represents the information pertaining to 2024 equity incentive plan.
Warrants [Text Block]
Disclosure of notes that entitle the holder to buy stock of the company at a specified price, which is much higher than the stock price at the time of issue.
Operating Segments [Member]
Accounting Policies [Abstract]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Segments [Domain]
blgo_FinanceFee
Finance fee
Amount of finance fee.
blgo_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodGrossPerMonth
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross, Per Month (in shares)
Gross number of share options (or share units) granted during period per month.
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts Receivable, Allowance for Credit Loss, Current
Clyra Medical fair value warrant issued with debt (unaudited)
Amount of increase in noncontrolling interest from warrants issued.
Accounts Receivable [Policy Text Block]
Segments [Axis]
Weighted average price, Issued (in dollars per share)
Per share or per unit price of warrants or rights issued during the period.
Expired warrants, balance (in shares)
The number of warrants that expired during the period.
Schedule Of Assumptions Used To Determine Fair Value Of Warrants [Table Text Block]
The tabular disclosure of assumptions used to determine the fair value of warrants.
Measurement Input Type [Axis]
Patents
The value of patents classified as noncurrent.
Income Statement [Abstract]
Security deposits
The amount of security deposits classified as noncurrent.
us-gaap_ReceivableWithImputedInterestEffectiveYieldInterestRate
Receivable with Imputed Interest, Effective Yield (Interest Rate)
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
Equity Incentive Plan 2007 [Member]
Equity incentive plan 2007 member.
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Measurement Input, Expected Dividend Rate [Member]
Measurement Input, Expected Term [Member]
Measurement Input, Price Volatility [Member]
us-gaap_DebtLongtermAndShorttermCombinedAmount
Total
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net loss attributable to common shareholders
Financial Asset, Past Due [Member]
Debt Instrument, Unamortized Discount, Current
Employees [Member]
Represents the employees.
Debt Instrument, Unamortized Discount, Noncurrent
Offering Cost
Measurement Input Type [Domain]
us-gaap_InterestIncomeExpenseNet
Interest income (expense)
Measurement Input, Risk Free Interest Rate [Member]
Customer A [Member]
Refers to information regarding customer A.
blgo_NumberofAccreditedInvestors
Number of Accredited Investors
Number of accredited investors.
Weighted average price, Expired (in dollars per share)
Per share or per unit price of warrants or rights expired during the period.
Customer E [Member]
Refers to information regarding customer E.
Customer D [Member]
Refers to information regarding customer D.
Customer C [Member]
Refers to information regarding customer C.
Customer B [Member]
Refers to information regarding customer B.
Non Plan [Member]
Represents the absence of a plan.
Warrant assumptions
us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Warrants and Rights Outstanding, Measurement Input
Biolargo [Member]
Related to the entity Biolargo.
Warrants Issued in Conjunction With the Sale of Series A Preferred Stock [Member]
Represents Warrants Issued in Conjunction With the Sale of Series A Preferred Stock.
Clyra Medical [Member]
Related to the entity Clyra Medical.
Entities, Excluding Partially Owned Subsidiary [Member]
Represents all the consolidated entities, excluding partially owned subsidiary.
blgo_WarrantsAndRightsOutstandingFairValue
Warrants and Rights Outstanding, Fair Value
Represents fair value of warrants and rights.
Accounting Standards Update and Change in Accounting Principle [Table]
Income Tax, Policy [Policy Text Block]
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
Partially Owned Subsidiary [Member]
Represents the partially owned subsidiary.
Non-cash investing and financing activities
Clyra Medical stock option compensation expense (unaudited)
Amount of increase in additional paid in capital from subsidiary issuance of equity interests for compensation expense.
Royalty Receivable [Member]
Represents Royalty Receivable.
Product Invoice Receivable [Member]
Represents product invoice receivable.
blgo_EquityOfferingFinancingFee
Equity Offering, Financing Fee
The financing fee related to the equity offering.
blgo_EngagementExtensionTerm
Engagement Extension, Term (Year)
Represents duration term of engagement extension.
Clyra Medical stock issued for services (unaudited)
Amount of increase in additional paid in capital from subsidiary issuance of equity interests for service.
Vendors [Member]
The element represents vendors.
Options outstanding, Vested (in shares)
Vested balance (in shares)
Aggregate intrinsic value, Vested
Weighted average exercise price, Vested (in dollars per share)
Weighted average exercise price, Vested (in dollars per share)
blgo_WorkingCapitalDeficit
Working Capital (Deficit)
Represents the value of total current assets net of current liabilities as of the balance sheet date.
Amortization of right-of-use finance lease asset
Represents The increase (decrease) during the reporting period in right of use and lease liability, net
us-gaap_RepaymentsOfLinesOfCredit
Repayments of Lines of Credit
Vesting [Axis]
Statement of Financial Position [Abstract]
Vesting [Domain]
us-gaap_NonoperatingIncomeExpense
Total other expense
us-gaap_LiabilitiesNoncurrent
Total long-term liabilities
us-gaap_LesseeFinanceLeaseTermOfContract1
Lessee, Finance Lease, Term of Contract (Year)
Long-term liabilities:
Government Grants [Policy Text Block]
The disclosure of policies relating to government grants.
Employees and Consultants [Member]
Employees and Consultants.
Short-term lease payments not included in lease liabilities
Noncash short-term lease payments not included in lease liability.
Other non-current assets
Total
Warrant [Member]
Balance, aggregate intrinsic value
Warrants and Rights Outstanding
us-gaap_SharesIssued
Shares, Issued (in shares)
Document Type
Total
blgo_TangibleAndIntangibleAssetsRightofuseAssetsAndEquityMethodInvestmentTotal
Total amount of tangible and intangible assets, right-of-use assets and equity method investment.
Document Information [Line Items]
Document Quarterly Report
Credit concentration
Document Information [Table]
blgo_DebtInstrumentPercentageOfPrincipalPaymentCap
Debt Instrument, Percentage of Principal Payment, Cap
Represents the maximum percentage of principal due monthly.
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
Antidilutive Securities [Axis]
Entity Interactive Data Current
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
Document Transition Report
us-gaap_OperatingExpenses
Total operating expenses
Net loss per share attributable to common shareholders:
Warrants Issued Concurrently with Note Payable [Member]
Refers to information regarding warrants issued concurrently with Note Payable.
us-gaap_LossContingencyDamagesSoughtValue
Loss Contingency, Damages Sought, Value
Weighted average number of common shares outstanding: (in shares)
us-gaap_NotesReceivableNet
Financing Receivable, after Allowance for Credit Loss
BioLargo Energy Technologies, Inc (BETI) [Member]
Information pertaining to BioLargo Energy Technologies, Inc. (BETI).
Note receivable, net of current
Loss per share attributable to shareholders – basic and diluted (in dollars per share)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Notes Payable, Other Payables [Member]
us-gaap_NotesPayableCurrent
Notes payable, current
BETI unit offering (unaudited)
Value of the new units issued during the period. Each unit consists of a convertible promissory note and a stock purchase warrant.
Title and Position [Domain]
Earnings Per Share, Policy [Policy Text Block]
blgo_StockIssuedDuringPeriodSharesCashlessExerciseOfOptions
Stock Issued During Period, Shares, Cashless Exercise of Options (in shares)
The number of shares issued during the period for cashless exercise of options.
March 31, 2025 Warrants [Member]
Represents the warrants issued on March 31, 2025.
us-gaap_IntangibleAssetsNetExcludingGoodwill
Intangible Asset, Excluding Goodwill, after Accumulated Amortization
Proceeds from BETI unit offering
The cash inflow from the issuance of units during the period.
blgo_ClassOfWarrantOrRightDiscountPercentage
Class of Warrant or Right, Discount Percentage
Percentage of discount on warrant or rights.
Warrants Issued With Secured Promissory Notes and Convertible Promissory Notes [Member]
Represents warrants issued with Secured Promissory Notes and Convertible Promissory Notes.
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
blgo_StockIssuedDuringPeriodValueNewIssuesNetOfOfferingCosts
Sale of common stock for cash, net of offering costs of $15 (unaudited)
Equity impact of the value of new stock issued during the period, net of offering costs.
Amendment Flag
Common Stock [Member]
Document Period End Date
Aggregate intrinsic Value, Balance
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
Options outstanding, Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
Vesting on Performance Metrics [Member]
Relating to vesting on performance metrics.
Entity File Number
Vernal Bay Capital Group, LLC [Member]
Information related to Vernal Bay Capital Group, LLC.
Entity Tax Identification Number
Inventory Line of Credit [Member]
Information related to the inventory line of credit.
ONM [Member]
Related to ONM.
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
blgo_ValueOfStockDirectedAmountToPurchase
Value of Stock Directed Amount to Purchase
Represents the value of share the company can Clearthink to purchase.
blgo_PercentOfDailyAverageSharesTraded
Percent of Daily Average Shares Traded
Represents the percent of daily average shares traded.
Foreign currency translation (unaudited)
Entity Current Reporting Status
Fair value of Clyra Medical warrants issued as debt discount
Amount of fair value of warrants issued with note payable in noncash transaction.
Grant income
The amount of nonoperating income from grants.
Entity Incorporation, State or Country Code
Common stock issued as a fee (unaudited) (in shares)
The number of shares issued during the period as a fee.
Common stock issued for financing fee
The value of the stock issued for financing fees classified as an operating activity.
Current Fiscal Year End Date
Common stock issued as a fee (unaudited)
The value of the stock issued during the period that was issued as a fee.
Lessor, Operating Leases [Text Block]
Research and development
Research and development expense
Entity Filer Category
Clearthink Capital Partners, LLC [Member]
Represents Clearthink Capital Partners, LLC.
The Five Year Warrants Issued in Unit Offerings [Member]
Represents the five year warrants issued in unit offerings.
Entity Shell Company
The Six Month Warrants Issued in Unit Offerings [Member]
Represents the six month warrants issued in unit offering.
Selling, General and Administrative [Member]
Represents the Selling, General and Administrative.
Entity Emerging Growth Company
blgo_ValueOfAverageSharesTraded
Value of Average Shares Traded
Represents the value of the average shares traded.
Unit Offering [Member]
Represents the Unit Offering.
Entity Small Business
Operating income (loss)
Operating loss:
Operating income (loss)
Valuation Approach and Technique [Axis]
Investments [Domain]
Measurement Input, Forfeiture Rate [Member]
Measurement input using forfeiture rate.
Preferred Stock, Series A [Member]
Represents Series A Preferred Stock.
Valuation Approach and Technique [Domain]
Warrants Issued with Guaranteed Promissory Note [Member]
The warrants issued with the guaranteed promissory note.
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Unvested (in shares)
Warrants Issued in Unit Offerings [Member]
Represents warrants issued in unit offerings.
blgo_ClassOfWarrantOrRightExpiredDuringPeriod
Warrants outstanding, Expired (in shares)
The number of warrants or rights expired during period.
Warrants outstanding, Issued (in shares)
Class of Warrant or Right, Issued During Period (in shares)
The number of warrants or rights issued during period.
Revenue
us-gaap_InterestExpenseDebt
Interest Expense, Debt
Entity Address, State or Province
Entity Address, City or Town
us-gaap_InterestExpenseNonoperating
Interest expense
Accumulated deficit
Entity Address, Address Line One
Weighted average exercise price per share, unvested (in dollars per share)
Weighted average price, Unvested (in dollars per share)
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
City Area Code
blgo_StockIssuedDuringPeriodSharesCommitmentFee
Stock Issued During Period, Shares, Commitment Fee (in shares)
Number of commitment fee stock issued during the period.
Local Phone Number
Entity Address, Postal Zip Code
Title of 12(b) Security
Trading Symbol
us-gaap_DebtInstrumentConvertibleConversionPrice1
Debt Instrument, Convertible, Conversion Price (in dollars per share)
Forfeiture rate
Represents expected forfeiture rate for share-based payment awards.
Class of Stock [Axis]
Consolidation, Eliminations [Member]
Class of Financing Receivable [Axis]
Weighted average remaining life, balance (Year)
Weighted average remaining term for warrants outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Class of Financing Receivable [Domain]
Revenue [Policy Text Block]
Entity Common Stock, Shares Outstanding
Chief Financial Officer [Member]
blgo_NumberOfWhollyOwnedSubsidiaries
Number of Wholly-Owned Subsidiaries
Represents the number of wholly-owned subsidiaries operated by the company.
blgo_StockIssuedDuringPeriodValueFinancingFees
Stock Issued During Period, Value, Financing Fees
Value of stock issued in lieu of cash for financing fees of the entity.
Director [Member]
Lawsuit Against Pooph Inc, Compensatory Damages for Unpaid Royalties [Member]
Amount of lawsuit claims against Pooph Inc for compensatory damages on unpaid royalties.
The 2007 Equity Incentive Plan [Member]
Represents information pertaining to the Company's 2007 Equity Incentive Plan.
Officer [Member]
Net loss attributable to noncontrolling interest
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net loss
Sale Leaseback of Equipment [Member]
Relating to sale leaseback of equipment.
blgo_LesseeFinanceLeasePurchaseOptionAmount
Lessee, Finance Lease, Purchase Option, Amount
Represents the amount of a purchase option on a finance lease.
Expired Warrants, Weighted Average Price Per Share (in dollars per share)
Represents the weighted average exercise price of warrants exercised.
Seven Employees Working at BioLargo Engineering, Science & Technologies, LLC [Member]
Refers to information regarding seven employees working at BioLargo Engineering, Science & Technologies, LLC.
Common stock, par value (in dollars per share)
Sale Leaseback Transaction, Name [Domain]
2018 Equity Incentive Plan [Member]
Represents the information pertaining to 2018 equity incentive plan.
BioLargo Canada [Member]
Information pertaining to the operating segment BioLargo Canada.
blgo_StockPurchaseAgreementMaximumAmountOfCommonStock
Stock Purchase Agreement, Maximum Amount of Common Stock
The maximum value available of the common stock for sale in a stock purchase agreement.
Schedule of Other Assets, Noncurrent [Table Text Block]
Lincoln Park Capital Fund, LLC [Member]
Refers to information regarding the entity Lincoln Park Capital Fund, LLC.
Parent Company [Member]
Long-Lived Asset, Class [Axis]
Sale of Stock [Domain]
us-gaap_Assets
Total assets
Wholly-Owned Subsidiary [Text Block]
The textual disclosure of a wholly-owned subsidiary.
BioLargo Engineering, Science & Technologies, LLC [Member]
Refers to information regarding the entity BioLargo Engineering, Science & Technologies, LLC.
Cash and Cash Equivalents, Policy [Policy Text Block]
Stock Purchase Agreement [Text Block]
The textual disclosure of information pertaining to a stock purchase agreement.
Cash and cash equivalents
Cash and Cash Equivalent
Sale Leaseback Transaction, Description [Axis]
Geographical [Domain]
Geographical [Axis]
Interest receivable
Debt Excluding Clyra Medical Technologies [Member]
Represents debt excluding Clyra medical technologies.
Deposits
blgo_IncreaseDecreaseInDepositLiabilities
The increase (decrease) during the reporting period in the aggregate amount of deposit liabilities that result from activities that generate operating income.
us-gaap_NotesReceivableGross
Financing Receivable, before Allowance for Credit Loss
us-gaap_InvestmentOwnedBalanceShares
Investment Owned, Balance, Shares (in shares)
Customer [Axis]
Contract liabilities
Contract with Customer, Liability, Current
Investment Type [Axis]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Other Assets, Policy [Policy Text Block]
Disclosure of accounting policy for assets classified as other.
Consolidation, Policy [Policy Text Block]
Interest income
Interest
us-gaap_InterestPaidNet
Comprehensive loss attributable to noncontrolling interest
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive loss
Interim Period, Costs Not Allocable [Domain]
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total stockholders’ (deficit) equity
Balance
Balance
Product [Member]
Inventories
Total
Service [Member]
Noncontrolling Interest [Member]
Contract liabilities
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
us-gaap_StockholdersEquity
Total BioLargo Inc. and subsidiaries stockholders’ equity
Stock, Class of Stock [Table]
Concentration Risk Benchmark [Axis]
us-gaap_InventoryValuationReserves
Inventory Valuation Reserves
Concentration Risk Benchmark [Domain]
Finance lease right-of-use
Financing lease right-of-use asset, net
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Operating lease right-of use
Operating lease right-of-use assets, net
Operating Lease, Right-of-Use Asset
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Revenue from Contract with Customer, Including Assessed Tax
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Schedule of Other Ownership Interests [Table Text Block]
Inventory, Policy [Policy Text Block]