Document And Entity Information
Statistical Measurement [Axis]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Note To Financial Statement Details Textual
The May 2026 Bank Loan Agreement [Member]
Relating to the bank loan acquired in May 2026.
Note 2 - Investments and Fair Value Measurements
Interest income (expense), net
Note 3 - Inventories
Provision for income taxes
Bank Loan Agreement [Member]
Relating to the bank loan agreements.
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 4 - Property, Plant and Equipment, Net
The April 2026 Bank Loan Agreement [Member]
Relating to the bank loan agreement acquired in April 2026.
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 5 - Accrued Liabilities
April 2026 Unsecured Bank Loan [Member]
Relating to the unsecured bank loan acquired in April 2026.
Trading Arrangements, by Individual [Table]
Note 7 - Investments in Privately Held Raw Material Companies
Unsecured Bank Loan June 2026 [Member]
Relating to the unsecured bank loan acquired in June 2026.
Material Terms of Trading Arrangement [Text Block]
Note 8 - Stockholders' Equity
Noncurrent assets, excluding other assets
axti_NoncurrentAssetsExcludingOtherAssets
Represents the amount of noncurrent assets excluding other assets.
Note 9 - Stock-based Compensation
Note 10 - Net Income (Loss) Per Share
Financial Instrument [Axis]
Note 11 - Segment Information and Foreign Operations
Note 12 - Commitments and Contingencies
Minimum [Member]
Note 15 - Revenue
Joint Venture Investment Balance
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Investments, unrealized loss
us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Gain (Loss), Foreign Currency Transaction, before Tax
Note 16 - Loans and Line of Credit
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Investments, unrealized gain
Statistical Measurement [Domain]
axti_PercentOfSharesAcquiredInAgreement
Percent of Shares Acquired in Agreement
Represents the percentage of outstanding shares acquired in the agreement.
Note 17 - Leases
us-gaap_ProceedsFromDividendsReceived
Proceeds from Dividends Received
Over-Allotment Option [Member]
Maximum [Member]
us-gaap_SharePrice
Share Price (in dollars per share)
axti_CostOfSharesAcquiredInAgreement
Cost of Shares Acquired in Agreement
The amount paid for the shares in the agreement.
Note 18 - Redeemable Noncontrolling Interests
Note 2 - Investments and Fair Value Measurements - Schedule of Cash, Cash Equivalents, and Investments (Details)
Equity in income (loss) of unconsolidated joint ventures
Note 2 - Investments and Fair Value Measurements - Unrealized Loss Positions (Details)
Note 3 - Inventories - Schedule of Inventory (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 4 - Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment (Details)
Note 5 - Accrued Liabilities - Accrued Liabilities (Details)
Note 7 - Investments in Privately-Held Raw Material Companies - Summary of Investments (Details)
Note 7 - Investments in Privately-Held Raw Material Companies - Summary Information for Equity Method Investments (Details)
Certificates of Deposit [Member]
Note 8 - Stockholders' Equity - Schedule of Changes in Stockholders' Equity (Details)
Note 8 - Stockholders' Equity - Schedule of Changes in Stockholders' Equity (Details) (Parentheticals)
Note 9 - Stock-based Compensation - Summary of Compensation Costs Related to Stock-Based Compensation Awards (Details)
Note 9 - Stock-based Compensation - Summary of Compensation Costs Related to Stock-Based Compensation Awards 2 (Details)
Note 9 - Stock-Based Compensation - Summary of Stock Options (Details)
Note 9 - Stock-based Compensation - Summary of Restricted Stock Awards (Details)
Note 9 - Stock-based Compensation - Summary of Performance Shares Activity (Details)
Note 10 - Net Income (Loss) Per Share - Reconciliation of Earnings Per Share (Details)
Note 11 - Segment Information and Foreign Operations - Reporting of Segment Revenue by Product Type (Details)
Note 11 - Segment Information and Foreign Operations - Segment Revenue Reporting by Geographic Region (Details)
Note 11 - Segment Information and Foreign Operations - Reconciliation of Long-lived Assets by Geographic Region (Details)
Note 12 - Commitments and Contingencies - Schedule of Changes in Accrual of Warranties (Details)
Note 15 - Revenue - Summary of Contract Liabilities (Details)
Note 16 - Loans and Line of Credit - Maturities of Long-Term Loans (Details)
Counterparty Name [Axis]
Note 17 - Leases - Maturities of Lease Liabilities (Details)
Note 17 - Leases - Information Related to Leases (Details)
Secured Debt [Member]
Note 17 - Leases - Supplemental Cash Flow Information Related to Leases (Details)
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]
Debt Securities, Available-for-Sale [Table]
Note 17 - Leases - Lease Cost (Details)
Note 18 - Redeemable Noncontrolling Interests - Schedule of Redeemable Noncontrolling Interests (Details)
Options, Granted, Weighted Average Exercise Price (in dollars per share)
Notes To Financial Statements
Options, Exercised, Weighted Average Exercise Price (in dollars per share)
Notes To Financial Statements [Abstract]
Performance Shares [Member]
Financial Instruments [Domain]
Jia Mei Investment [Member]
Represents the Jia Mei Investment.
Leasehold Improvements [Member]
Counterparty Name [Domain]
us-gaap_IncreaseDecreaseInInventories
Inventories
Manufacturing Equipment [Member]
Represents the manufacturing equipment.
us-gaap_PreferredStockDividendRatePercentage
Preferred Stock, Dividend Rate, Percentage
Segment Reporting [Text Block]
Investments, fair value, 12 months or longer
us-gaap_ShortTermBankLoansAndNotesPayable
Short-Term Bank Loans and Notes Payable
Investments, fair value, 12 months or less
Award Type [Axis]
Preferred stock Series A, $0.001 par value; 2,000 shares authorized; 883 shares issued and outstanding as of June 30, 2026 and December 31, 2025 (Liquidation preference of $8,317 and $8,229 as of June 30, 2026 and December 31, 2025)
Preferred Stock, Value, Issued
Adjustments to reconcile net loss to net cash used in operating activities:
Plan Name [Axis]
us-gaap_Liabilities
Total liabilities
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
Share-Based Payment Arrangement, Amount Capitalized
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities, redeemable noncontrolling interests and stockholders’ equity
ChaoYang XinMei [Member]
Represents ChaoYang XinMei joint venture agreement.
us-gaap_LongTermDebtTerm
Long-Term Debt, Term (Year)
Title and Position [Axis]
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
Loan From Related Party [Member]
Represents a loan from a related party.
Location, Statement of Financial Position, Balance [Axis]
Minority Investor [Member]
Represents a minority investor.
us-gaap_ShareBasedCompensation
Stock-based compensation
Selling, general and administrative
Subsequent Event [Member]
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Nonconsolidated Investee [Domain]
axti_AmountOfAdditionalInvestmentInJointVentureAgreement
Amount of Additional Investment in Joint Venture Agreement
Represents the additional amount of investment in a joint venture agreement.
Chaoyang Kaimei Quartz Co [Member]
Represents Chaoyang Kaimei Quartz Co.
axti_PercentageOfEquityIssuedOnConversionOfNonControllingInterests
Percentage of Equity Issued on Conversion of Non Controlling Interests
Represents the percentage of equity issued on the conversion of non controlling interests.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
Beijing Bouy Vessel [Member]
Represents Beijing Bouy Vessel.
Lessee, Lease, Description [Table]
Chao Yang ShouMei [Member]
Represents the Chao Yang ShouMei joint venture agreement.
Share-Based Payment Arrangement [Text Block]
Chao Yang Jin Mei Gallium [Member]
Represents Chao Yang Jin Mei Gallium.
Location, Statement of Income, Balance [Axis]
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Changes in operating assets and liabilities:
North America [Member]
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Preferred stock, shares issued (in shares)
Preferred Stock, Shares Issued (in shares)
Nanjing Jin Mei Gallium [Member]
Represents Nanjing Jin Mei Gallium.
Europe [Member]
Preferred stock, shares outstanding (in shares)
Preferred Stock, Shares Outstanding (in shares)
Beijing Tongmei Xtal Technology [Member]
Represents Beijing Tongmei Xtal Technology.
Preferred stock, liquidation preference
Preferred stock, shares authorized (in shares)
Beijing Jiya [Member]
Represents Beijing Jiya investment.
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_IncreaseDecreaseInAccruedLiabilities
Accrued liabilities
Restricted cash
Restricted Cash, Current
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase in cash, restricted cash and cash equivalents
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Table Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Cash, restricted cash and cash equivalents, amortized cost
Series A Preferred Stock [Member]
Effect of exchange rate changes on cash, restricted cash and cash equivalents
Five Minority Investments [Member]
Represents five minority investments.
Xiaoyi Xingan Gallium [Member]
Represents Xiaoyi Xingan Gallium investment.
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Cash, restricted cash and cash equivalents, fair value
Equity Method Investments, Summarized Income Information [Table Text Block]
Tabular disclosure of income information of minority investment entities that are not consolidated and accounted under the equity method.
Tongmei stock-based compensation
Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement of subsidiary.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, restricted cash and cash equivalents at the beginning of the year
Cash, restricted cash and cash equivalents at the end of the period
axti_SharebasedCompensationArrangementBySharebasedPaymentAwardPerformanceTargetCapPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Target Cap, Percentage
Represents the percentage of performance target cap of award under a share-based payment arrangement.
Antidilutive Securities, Name [Domain]
Consultant [Member]
Represents consultant.
Share-Based Payment Arrangement, Tranche One [Member]
axti_AnnualRevenueGrowthRatePercentage
Annual Revenue Growth Rate, Percentage
Represents the annual revenue growth rate expressed as a percentage.
Statement [Table]
Equity Incentive Plan 2015 [Member]
Represents the 2015 equity incentive plan.
us-gaap_LinesOfCreditCurrent
HERE
Performance Based Vesting [Member]
Represents performance based vesting.
Time Based Vesting [Member]
Represents time based vesting.
Credit Facility [Axis]
Operating cash flows from operating leases
Credit Facility [Domain]
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Investments, unrealized loss
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
Equity Method Investment Balance
Equity Method Investments
Investments, unrealized loss, fair value
us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
Equity Method Investment, Other-than-Temporary Impairment
Equity Method Investment, Ownership Percentage
Equity Method Investment, Ownership Percentage
axti_NumberOfMajorCustomers
Number of Major Customers
Represents information about the number of major customers.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Restricted Stock, Unvested, Shares (in shares)
Restricted Stock, Unvested, Shares (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share)
Restricted Stock, Unvested, Weighted Average Grant Date Share Value (in dollars per share)
Restricted Stock, Unvested, Weighted Average Grant Date Share Value (in dollars per share)
Redeemable Noncontrolling Interest [Table Text Block]
Asia Pacific Excluding China, Taiwan and Japan [Member]
Represents Asia excluding China, Taiwan and Japan.
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Restricted Stock, Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
axti_LicenseAgreementTerm
License Agreement, Term (Year)
Represents the term of a license agreement.
Restricted Stock, Granted, Weighted Average Grant Date Share Value (in dollars per share)
Top Five Customers [Member]
Represents information relating to the top five customers.
Long-Term Debt, Type [Axis]
Forfeited, shares (in shares)
Restricted Stock, Forfeited (in shares)
Raw Materials and Other [Member]
Represents raw materials and other.
Substrates [Member]
Represents substrates.
Cross License Agreement [Member]
Represents a cross license agreement.
Product and Service [Domain]
Product and Service [Axis]
Ownership [Axis]
Land Purchase and Investment Agreement [Member]
Represents a land purchase and investment agreement.
Ownership [Domain]
Consolidated Entities [Axis]
us-gaap_LongTermLineOfCredit
Long-Term Line of Credit, Noncurrent
Consolidated Entities [Domain]
Line of Credit [Member]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
2026 (remaining 6 months)
Restricted Stock, Vested, Weighted Average Grant Date Share Value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)
Restricted Stock, Vested (in shares)
axti_LandPurchaseAndInvestmentAgreementTotalValue
Land Purchase and Investment Agreement, Total Value
Represents the total value of assets and capital invested into an agreement for a land purchase and investment agreement.
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total minimum lease payments
Kazuo AXT Investment [Member]
Represents the Kazuo AXT investment.
axti_OutstandingPurchaseOrders
Outstanding Purchase Orders
Represents the number of outstanding purchase orders as of a given date.
Kazuo Boyu Investment [Member]
Represents the Kazuo Boyu investment.
Weighted-average discount rate
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2027
axti_ExpectedPeriodOfBenefitForExpenseOfSalesCommissions
Expected Period of Benefit for Expense of Sales Commissions (Year)
Represents the expected period of benefit for the expense of sales commissions.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions
Equity in income of unconsolidated joint ventures
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Schedule of Maturities of Long-Term Debt [Table Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
2026
Options exercisable (in shares)
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Options exercisable, Weighted Average Exercise Price (in dollars per share)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2029
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options, Balance, Outstanding (in shares)
Options, Balance, Outstanding (in shares)
Commitments and Contingencies Disclosure [Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2028
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options, Outstanding, Weighted Average Exercise Price (in dollars per share)
Options, Outstanding, Weighted Average Exercise Price (in dollars per share)
Statement [Line Items]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
2030
Options, Aggregate Intrinsic Value
Common stock, shares issued (in shares)
Common stock, shares outstanding (in shares)
Award Type [Domain]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Share Repurchase Program, Remaining Authorized, Amount
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Product Warranty Liability [Table Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Common stock, $0.001 par value; 120,000 and 70,000 shares authorized as of June 30, 2026 and December 31, 2025; 65,570 and 55,337 shares issued and outstanding as of June 30, 2026 and December 31, 2025
Proceeds from issuance of common stock and options exercised, net of issuance costs
Schedule of Inventory, Current [Table Text Block]
Cash, Cash Equivalent, and Investment [Table Text Block]
us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from Issuance of Common Stock
Schedule of Stockholders Equity [Table Text Block]
us-gaap_AccountsPayableCurrent
Accounts payable
Short-Term Debt, Type [Domain]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Return of equity method investments as dividends
Represents information pertaining to dividend returns from equity method investments.
us-gaap_TableTextBlock
Notes Tables
us-gaap_LongTermLoansPayable
Loans Payable, Noncurrent
us-gaap_ProceedsFromLinesOfCredit
Proceeds from Lines of Credit
Facility Lease [Member]
Represents the facility lease.
Short-Term Debt, Type [Axis]
axti_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
Thereafter
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).
Other tax payable
Equipment Lease [Member]
Represents the equipment lease.
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income (loss) attributable to AXT, Inc.
Disposal Group Classification [Axis]
Disposal Group Classification [Domain]
Effect of foreign currency translation attributable to redeemable noncontrolling interests
Represents the amount of effect of foreign currency translation on redeemable noncontrolling interests.
Accrued compensation and related charges
Short-term investments
us-gaap_ShortTermBorrowings
Short-Term Debt
Accrued professional services
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
axti_RedeemableNonControllingInterestsOwnershipPercentage
Redeemable Non Controlling Interests, Ownership Percentage
Represents the ownership percentage in redeemable noncontrolling interests.
us-gaap_AccruedLiabilitiesCurrent
Accrued Liabilities, Current
Accrued liabilities
Lessee, Supplemental Cash Flow Information of Operating Leases [Table Text Block]
Tabular disclosure of supplemental cash flow information related to leases.
Proceeds from long-term loans
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations [Member]
Equity issuance costs incurred
Represents the amount of stock issuance costs related to redeemable noncontrolling interests.
Preferred stock dividends payable
Dividends Payable, Current
Related Party [Member]
Payable in connection with construction in progress
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: Interest
Accrued product warranty
Long-term portion of lease obligations
Options, Outstanding, Weighted Average Remaining Contractual Life (Year)
Present value of lease obligations
Other accrued liabilities
Current portion of operating lease liabilities
Less: Current portion, included in accrued liabilities
Other personnel-related costs
axti_NumberOfTopCustomers
Number of Top Customers
Represents the number of top customers.
Accounts Receivable [Member]
Net income attributable to redeemable noncontrolling interests
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest
us-gaap_LongTermDebtCurrent
Long-Term Debt, Current Maturities
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Options exercisable, Weighted Average Remaining Contractual Life (Year)
Concentration Risk Type [Domain]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2028
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2030
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2029
Construction in progress
Construction in Progress, Gross
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2027
Investments, amortized cost
us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Investments, amortized cost
us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Proceeds from Sale of Property, Plant, and Equipment
Schedule of Weighted Average Remaining Lease Term and Discount Rate for Operating Leases [Table Text Block]
Tabular disclosure of weighted average remaining lease term and discount rate for operating leases.
CHINA
Long-term investments
us-gaap_LongTermDebt
Long-Term Debt
Construction in Progress, Other Consolidated Subsidiaries [Member]
Represents construction in progress related to other consolidated subsidiaries.
Fair Value Investment Balance
Statement of Comprehensive Income [Abstract]
Statement of Cash Flows [Abstract]
Proceeds from short-term bank loans
us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest
Long-Term Debt, Type [Domain]
Stockholders’ equity:
Accruals for warranties issued
Equity Components [Axis]
Equity Component [Domain]
Offsetting Liabilities [Table]
us-gaap_ProductWarrantyAccrualPayments
Cost of warranty repair
Adjustments related to pre-existing warranties including expirations and changes in estimates
Equity [Text Block]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
us-gaap_ProductWarrantyAccrual
Accrued product warranty
Accrued product warranty
Retained Earnings [Member]
Real Estate [Member]
Consideration payable in connection with construction in progress, included in accrued liabilities
Property, plant and equipment, net
us-gaap_PropertyPlantAndEquipmentGross
Property, plant and equipment, gross
Subsequent Event Type [Domain]
JAPAN
Subsequent Event [Table]
Subsequent Event Type [Axis]
Sale of Stock [Axis]
Machinery and Equipment [Member]
Cost of revenue
Stock-based compensation
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Share-Based Payment Arrangement, Option [Member]
Current liabilities:
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Amortization of marketable securities premium
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Accounts receivable, net of allowances for credit losses of $230 and $164 as of June 30, 2026 and December 31, 2025
us-gaap_ProductWarrantyObligationTerm
Product Warranty Obligation, Term (Month)
Customer Concentration Risk [Member]
Product Liability Contingency [Table]
us-gaap_PreferredStockLiquidationPreference
Preferred Stock, Liquidation Preference Per Share (in dollars per share)
Lease, Cost [Table Text Block]
Collateral Held [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Options, Canceled and expired (in shares)
Collateral Held [Axis]
us-gaap_PaymentsToAcquireEquityMethodInvestments
Investments in non-marketable equity investments
Revenue Benchmark [Member]
Other Commitments [Table]
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Gain on disposal of equipment
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation and amortization
Accumulated other comprehensive loss
Options, Canceled and expired,Weighted Average Exercise Price (in dollars per share)
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block]
us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Allocated share based compensation expense
Short-term loans
Debt, Current
us-gaap_RedeemableNoncontrollingInterestEquityRedemptionValue
Redeemable Noncontrolling Interest, Equity, Redemption Value
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income (loss) before provision for income taxes
Additional paid-in capital
Debt Disclosure [Text Block]
TAIWAN
Noncontrolling interests
Prepaid expenses and other current assets
us-gaap_MinorityInterestPeriodIncreaseDecrease
Noncontrolling Interest, Period Increase (Decrease)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Accrual for sales returns
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Noncontrolling Interest Disclosure [Text Block]
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property, plant and equipment
Issuance of common stock, net of issuance costs
Lessee, Operating Leases [Text Block]
Joint Venture Investment, Ownership Percentage
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Current assets:
Common stock options exercised
us-gaap_AssetsCurrent
Total current assets
us-gaap_GrossProfit
Gross profit
Gross profit
us-gaap_StockIssuedDuringPeriodSharesNewIssues
Stock Issued During Period, Shares, New Issues (in shares)
Debt Instrument, Name [Domain]
us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Options, Exercised (in shares)
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Related and Nonrelated Parties [Axis]
Class of Stock [Domain]
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
Net loss
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Redeemable Noncontrolling Interest [Table]
Redeemable noncontrolling interests (Note 18)
Balance
Balance
Cash flows from operating activities:
Cash flows from investing activities:
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
us-gaap_InventoryRawMaterialsNetOfReserves
Raw materials
Cash flows from financing activities:
us-gaap_InventoryWorkInProcessNetOfReserves
Work in process
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
us-gaap_TreasuryStockAcquiredAverageCostPerShare
Shares Acquired, Average Cost Per Share (in dollars per share)
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
us-gaap_InventoryFinishedGoodsNetOfReserves
Finished goods
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Purchases of available-for-sale debt securities
Accounting Policies [Abstract]
Accounting Standards Update and Change in Accounting Principle [Text Block]
Allowances for credit losses
US Treasury Securities [Member]
Income Statement [Abstract]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Net income (loss) attributable to AXT, Inc.
Net income (loss) attributable to AXT, Inc.
Net income (loss) available to common stockholders
us-gaap_GovernmentAssistanceNonoperatingIncome
Government Assistance, Nonoperating Income, Increase (Decrease)
Stock issuance costs
us-gaap_AreaOfRealEstateProperty
Area of Real Estate Property (Acre)
Unsecured Debt [Member]
Notes receivables paid to purchase fixed assets
Income Tax Disclosure [Text Block]
Restricted Stock [Member]
Other Nonoperating Income and Expense [Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_AssetImpairmentCharges
Asset, Impairment Loss
axti_NonredeemableNoncontrollingInterestsIncreaseDecrease
Nonredeemable Noncontrolling Interests, Increase (Decrease)
Represents the amount of increase (decrease) in nonredeemable noncontrolling interests during the period.
Investments and Fair Value Measurement [Text Block]
The disclosure of investments and fair value measurements.
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
axti_CapitalReceivedApproved
Capital Received, Approved
Represents the amount of capital received that has been approved by a governmental entity.
Inventory [Domain]
Related and Nonrelated Parties [Domain]
Inventory [Axis]
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
axti_CapitalReceivedFromPrivateEquityFunds
Capital Received From Private Equity Funds
Represents the amount of capital received from private equity funds during the period.
Related Party Transaction [Table]
Related Party Transactions Disclosure [Text Block]
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Excess and Obsolete Inventory [Member]
Represents excess and obsolete inventory.
axti_CashAndCashEquivalentsGrossUnrealizedGainBeforeTax
Cash, restricted cash and cash equivalents, unrealized gain
Represents the gross unrealized gain before tax related to cash and cash equivalents.
axti_CashAndCashEquivalentsGrossUnrealizedLossBeforeTax
Cash, restricted cash and cash equivalents, unrealized loss
Represents the gross unrealized loss before tax related to cash and cash equivalents.
us-gaap_RepaymentsOfLongTermDebt
Payments on long-term loans
Chao Yang LiMei [Member]
Represents Chao Yang LiMei.
Vesting [Axis]
Statement of Financial Position [Abstract]
Vesting [Domain]
Lower of Costs or Net Realized Value Inventory [Member]
Represents inventory that is recorded at lower of costs or net realized value.
Dingxing and Kazuo [Member]
Represents Dingxing and Kazuo.
The September and November 2025 BanK Loan [member]
The September and November 2025 bank loan.
us-gaap_RepaymentsOfShortTermDebt
Payments on short-term bank loans
Effect of foreign currency translation on redeemable noncontrolling interests
Represents the amount of foreign currency translation adjustments related to redeemable noncontrolling interests.
axti_DebtInstrumentOptionToRepurchaseProductionLineAndRelatedEquipment
Debt Instrument, Option to Repurchase Production Line and Related Equipment
Represents the option to repurchase a production line and related equipment related to a debt instrument.
Other assets
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
Document Type
Other long-term liabilities
us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Operating expenses:
Document Information [Line Items]
Document Quarterly Report
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term (Year)
Weighted-average remaining lease term (years) (Year)
Document Information [Table]
Anti-dilutive securities (in shares)
Antidilutive Securities [Axis]
Entity Interactive Data Current
Document Transition Report
Diluted (in shares)
Denominator for dilutive net loss per common shares (in shares)
us-gaap_OperatingExpenses
Total operating expenses
Equity Incentive Plan 2025 [Member]
Represents the Equity Incentive Plan 2025.
Common stock options (in shares)
Basic (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Month)
Basic (in dollars per share)
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Effective Income Tax Rate Reconciliation [Table]
Title and Position [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
Investment, Name [Domain]
Amendment Flag
Long-term loan received in the form of a note receivable
Amount of loan proceeds received by notes receivable in noncash (or part noncash) transaction.
Common Stock [Member]
Document Period End Date
Investment [Table Text Block]
Building [Member]
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
Options, Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
us-gaap_VariableLeaseCost
Variable Lease, Cost
Beijing Boyu Semiconductor Vessel Craftwork Technology Co [Member]
Represents information pertaining to the Beijing Boyu Semiconductor Vessel Craftwork Technology Co.
Legal Entity [Axis]
Operating lease
Short-term lease expense
axti_NumberOfMinorityInvestmentEntitiesAccountedUnderEquityMethod
Number of Minority Investment Entities Accounted Under Equity Method
The number of minority investment entities accounted under the equity method.
us-gaap_LeaseCost
Total
Entity File Number
us-gaap_RevenueRemainingPerformanceObligation
Revenue, Remaining Performance Obligation, Amount
Entity Tax Identification Number
Supplemental disclosure of non-cash flow information:
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Investments, unrealized loss, 12 months or less
Disaggregation of Revenue [Table]
Chao Yang Tongmei High Purity Semiconductor Materials Co Ltd. [Member]
Represents information pertaining to Chao Yang Tongmei High Purity Semiconductor Materials Co Ltd.
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Investments, unrealized loss, 12 months or longer
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Change in foreign currency translation income, net of tax
Entity Current Reporting Status
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Research and development
Entity Filer Category
Entity Shell Company
Entity Emerging Growth Company
us-gaap_OtherComprehensiveIncomeLossNetOfTax
Total other comprehensive income, net of tax
Entity Small Business
us-gaap_OperatingIncomeLoss
Operating income
Income (loss) from operations
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_PreferredStockDividendsIncomeStatementImpact
Less: Preferred stock dividends
us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Contract with Customer, Liability, Revenue Recognized
us-gaap_Revenues
Net revenue
Entity Address, State or Province
Entity Address, City or Town
Inventory, Current [Table]
Accumulated deficit
Entity Address, Address Line One
City Area Code
Due after 1 through 5 years, amortized cost
Local Phone Number
Due within 1 year, amortized cost
Entity Address, Postal Zip Code
Equity Method Investment [Table]
Revenue from Contract with Customer [Text Block]
Preferred Stock [Member]
Title of 12(b) Security
Security Exchange Name
Trading Symbol
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
Due within 1 year, fair value
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
Due after 1 through 5 years, fair value
Class of Stock [Axis]
Subsidiaries [Member]
Investments, fair value
us-gaap_AvailableForSaleSecuritiesDebtSecurities
Investments, fair value
Unsecured Bank Loans [Member]
Represents information pertaining to unsecured bank loans.
Related Party Transaction [Domain]
Entity Common Stock, Shares Outstanding
Related Party Transaction [Axis]
Other comprehensive income, net of tax:
Chief Financial Officer [Member]
Earnings Per Share [Text Block]
Chief Executive Officer [Member]
Stock-based compensation attributable to redeemable noncontrolling interests
The amount of stock-based compensation attributable to redeemable non-controlling interest.
Change in unrealized loss on available-for-sale debt investments, net of tax
us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Less: Net (income) loss attributable to noncontrolling interests and redeemable noncontrolling interests
Net income (loss)
Net income (loss)
Net income (loss)
Deferred tax assets
Restricted Stock, Restricted Stock Units, and Performance Awards [Member]
Represents information pertaining to restricted stock, restricted stock units, and performance awards.
Accrued income taxes
Other comprehensive loss
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Options Exercisable, Aggregate Intrinsic Value
Property, Plant, and Equipment [Table]
Common stock, par value (in dollars per share)
Investment, Name [Axis]
Other income (expense), net
Long-Lived Asset, Class [Axis]
Sale of Stock [Domain]
us-gaap_Assets
Total assets
Cash and cash equivalents
Geographical [Domain]
Geographical [Axis]
axti_EquityMethodInvestmentsIncomeLossExcludingImpairmentCharges
Equity Method Investments, Income (Loss), Excluding Impairment Charges
The amount of net income (loss) from an equity method investment, excluding impairment charges.
Total cash, restricted cash, cash equivalents and investments, amortized cost
us-gaap_CashCashEquivalentsAndShortTermInvestments
Diluted (in dollars per share)
us-gaap_ContractWithCustomerLiabilityNoncurrent
Contract with Customer, Liability, Noncurrent
us-gaap_ContractWithCustomerLiability
Contract with Customer, Liability
Customer [Axis]
Contract liabilities
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Depreciation and amortization
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block]
One Customer [Member]
Represents information pertaining to one customer.
Inventory Disclosure [Text Block]
us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
Less: Comprehensive (income) loss attributable to noncontrolling interests and redeemable noncontrolling interests
Advances from customers
Amount of expenses incurred but not yet paid classified as advances from customers, due within one year or the normal operating cycle, if longer.
Total cash, restricted cash, cash equivalents and investments
axti_CashCashEquivalentsAndShorttermInvestmentsFairValue
Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive income (loss)
Disaggregation of Income Statement Expense, Caption [Table]
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total stockholders’ equity
Balance
Balance
Inventories
axti_ReservationAgreementNumberOfDeposits
Reservation Agreement, Number of Deposits
The number of deposits under reservation agreement.
axti_ReservationAgreementDepositAmount
Reservation Agreement, Deposit Amount
Amount of each deposit under the reservation agreement.
us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Disposal Group, Including Discontinued Operation, Consideration
Time Deposits [Member]
Time Deposits
axti_AggregateRedemptionIfInvestorsExerciseRightsInFull
Aggregate Redemption if Investors Exercise Rights in Full
Amount of aggregate redemption if investors exercise their rights in full.
axti_ReservationAgreementPeriod
Reservation Agreement, Period (Year)
Period of the reservation agreement.
Underwriting Agreement [Member]
Underwriting Agreement
Parent [Member]
Corporate Bond Securities [Member]
Northland Securities (Underwriters) [Member]
Northland Securities (Underwriters)
InP Wafer Substrates [Member]
Represents InP wafer substrates.
Noncontrolling Interest [Member]
Total cash, restricted cash, cash equivalents and investments, unrealized gain
axti_CashAndCashEquivalentsAndAvailableforsaleDebtSecuritiesGrossUnrealizedGain
Cash and Cash Equivalents and Available-for-sale Debt Securities, Gross Unrealized Gain
us-gaap_StockholdersEquity
Total AXT, Inc. stockholders’ equity
Restricted Stock, Forfeited, Weighted Average Grant Date Share Value (in dollars per share)
axti_ReservationAgreementInitialDepositPeriodDue
Reservation Agreement, Initial Deposit Period Due (Day)
The period the initial deposit is due for the reservation agreement.
Stock, Class of Stock [Table]
axti_CashAndCashEquivalentsAndAvailableforsaleDebtSecuritiesGrossUnrealizedLoss
Total cash, restricted cash, cash equivalents and investments
Cash and Cash Equivalents and Available-for-sale Debt Securities, Gross Unrealized Loss
Concentration Risk Benchmark [Axis]
us-gaap_InventoryValuationReserves
Inventory Valuation Reserves
Concentration Risk Benchmark [Domain]
us-gaap_PaymentsForAdvanceToAffiliate
Payments for Advance to Affiliate
Operating lease right-of-use assets
us-gaap_OtherLiabilitiesNoncurrent
Other long-term liabilities
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
Revenue
us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
axti_ContractualAgreementAdvancePayments
Contractual Agreement, Advance Payments
The amount of advance payments under the contractual agreement.
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Revenue
Commitments and contingencies (Note 12)