Document And Entity Information
Note To Financial Statement Details Textual
Significant Accounting Policies
Investment, Policy [Policy Text Block]
Note 1 - Basis of Presentation and Summary of Significant Accounting Policies
us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate
Income Tax Expense
Note 3 - Term Deposits
Note 5 - Trade Account Receivables and Allowance for Credit Losses
Note 6 - Loans Receivable From Property Development Projects
Note 7 - Inventories
Note 8 - Investment Properties
Note 9 - Property, Plant and Equipment
Note 10 - Other Assets
Note 11 - Lines of Credit
Note 12 - Accrued Expense
Note 13 - Assurance Warranty Accrual
us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Unrealized foreign exchange loss
Note 14 - Bank Loans Payable
Note 15 - Other Non-current Liabilities
Note 18 - Concentration of Customers
Note 19 - Business Segments
Note 20 - Other Income (Expense)
Note 21 - Government Grants
us-gaap_IncreaseDecreaseInAccountsReceivable
Trade accounts receivable
Note 22 - Income Taxes
Note 23 - Revenue
Accounts payable and accrued expenses
Note 24 - Earnings Per Share
Note 25 - Stock Options
Note 26 - Leases
Note 27 - Non-controlling Interest
Note 1 - Basis of Presentation and Summary of Significant Accounting Policies - Ownership (Details)
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Note 3 - Term Deposits - Term Deposits (Details)
Note 5 - Trade Account Receivables and Allowance for Credit Losses - Allowance for Doubtful Accounts (Details)
Note 6 - Loans Receivable From Property Development Projects - Loans Receivable (Details)
Note 7 - Inventories - Inventories (Details)
Note 7 - Inventories - Changes in Provision for Obsolete Inventories (Details)
Note 8 - Investment Properties - Investment Properties (Details)
Note 9 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details)
Note 10 - Other Assets - Other Assets (Details)
Note 11 - Lines Of Credit- Line of Credit (Details)
Note 12 - Accrued Expense - Accrued Expenses (Details)
Note 13 - Assurance Warranty Accrual - Warrant Liability (Details)
Note 14 - Bank Loans Payable - Bank Loans (Details)
Note 14 - Bank Loans Payable - Bank Loans (Details) (Parentheticals)
Note 14 - Bank Loans Payable - Future Minimum Payments (Details)
Note 15 - Other Non-current Liabilities - Other Non-current Liabilities (Details)
Note 18 - Concentration of Customers - Revenue and Trade Accounts Receivables (Details)
Note 19 - Business Segments - Business Segment Information (Details)
Note 20 - Other Income (Expense) - Other Income (Details)
Note 21 - Government Grants - Grants Received (Details)
Note 22 - Income Taxes - Schedule of (Loss) Income Before Provision for Income Taxes (Details)
Note 22 - Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details)
Note 22 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
Note 22 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) (Parentheticals)
Note 22 - Income Taxes - Summary of Income Taxes Paid (Details)
Note 22 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)
Note 23 - Revenue - Revenue by Product and Service (Details)
Note 24 - Earnings Per Share - Computation of Basic and Diluted EPS (Details)
Note 25 - Stock Options - Summary of 2017 Employee Plan Options Activities (Details)
Note 25 - Stock Options - Summary of Nonvested Employee Stock (Details)
Note 25 - Stock Options - Summary of 2017 Directors Plan Options Activities (Details)
Note 26 - Leases - Future Minimum Rental Income (Details)
Income taxes payable
us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
Note 26 - Leases - Supplement Balance Sheet Information (Details)
Note 26 - Leases - Other Information (Details)
Interest income
us-gaap_InterestIncomeExpenseNonoperatingNet
Note 26 - Leases - Future Minimum Lease Payments (Details)
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Note 27 - Non-controlling Interest - Summary of Equity Attributable to Non-controlling Interest (Details)
Notes To Financial Statements
us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Lessee, Operating Lease, Remaining Lease Term (Year)
Notes To Financial Statements [Abstract]
Leasehold Improvements [Member]
Provision for reinstatement
trt_ProvisionForReinstatementLiability
The amount of provision for re-instatement classified as a liability.
Assets Subject to a Financial Arrangement [Member]
Related to assets subject to a financial arrangement.
us-gaap_IncreaseDecreaseInInventories
Inventories
Segment Reporting [Text Block]
us-gaap_IncreaseDecreaseInOtherReceivables
Other receivables
Segment Reporting [Table Text Block]
us-gaap_Liabilities
TOTAL LIABILITIES
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND EQUITY
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
Selling
Equity Method Investment, Nonconsolidated Investee [Axis]
Equity Method Investment, Nonconsolidated Investee [Domain]
Lessee, Lease, Description [Table]
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Changes in operating assets and liabilities, net of acquisition effects
trt_FinancingReceivableAllowanceForCreditLossesCurrent
Financing Receivable, Allowance for Credit Losses, Current
Amount of allowance for credit loss on financing receivable, classified as current.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net Increase in Cash, Cash Equivalents, and Restricted Cash
Total Cash, Cash Equivalents, and Restricted Cash Shown in Statements of Cash Flows
Effect of Changes in Exchange Rate
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period
Cash, Cash Equivalents, and Restricted Cash at End of Period
Lines of credit
Unused credit
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Basis spread rate
Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities
us-gaap_FinanceLeasePrincipalPayments
Payment of principal portion of finance leases
Credit Limitation
us-gaap_MinorityInterestDecreaseFromRedemptions
Acquisition of subsidiary without a change in control
Notes Payable to Bank 3 [Member]
Represents notes payable to bank 3.
Interest Rate
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Non-vested options outstanding (in shares)
Non-vested options outstanding (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Non-vested, weighted average grant date fair value (in dollars per share)
Non-vested, weighted average grant date fair value (in dollars per share)
Granted, nonvested options (in shares)
Granted, weighted average grant date fair value (in dollars per share)
us-gaap_OtherIncome
Total
us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization
Less: accumulated amortization of equipment under finance leases *
Equipment under finance leases
Vested, weighted average grant date fair value (in dollars per share)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Line of Credit Facility [Table]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested, nonvested options (in shares)
us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding (in shares)
Property, plant and equipment, net
Property, plant and equipment, net
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total future minimum lease payments, operating lease
us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)
us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization
Total accumulated depreciation
Finance leases
us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent
Operating leases
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
Asset Class [Axis]
2027, operating lease
Lessee, Operating Lease, Liability, to be Paid, Year One
2031, operating lease
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
Schedule of Maturities of Long-Term Debt [Table Text Block]
Exercisable, options (in shares)
Exercisable, weighted average exercise price (in dollars per share)
Exercisable, weighted average exercise price (in dollars per share)
2029, operating lease
2028, operating lease
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding. options (in shares)
Outstanding, options (in shares)
Commitments and Contingencies Disclosure [Text Block]
2028, operating lease
Lessee, Operating Lease, Liability, to be Paid, Year Two
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
2030, operating lease
Aggregate intrinsic value outstanding
Common stock, shares issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common stock, shares outstanding (in shares)
Award Type [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears
Payments to be received, year four
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
us-gaap_LessorOperatingLeasePaymentsToBeReceived
Payments to be received, total
Common stock, shares authorized (in shares)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Operating Lease, Lease Income [Table Text Block]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths
Payments to be received, year one
us-gaap_OperatingLeaseLeaseIncome
Operating Lease, Lease Income
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Payments
Schedule of Accrued Liabilities [Table Text Block]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears
Payments to be received, year three
Schedule of Product Warranty Liability [Table Text Block]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears
Payments to be received, year two
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Common stock, no par value, 15,000,000 shares authorized; 10,371,192 and 8,625,610 shares issued outstanding as of June 30, 2026 and 2025, respectively
Schedule of Inventory, Noncurrent [Table Text Block]
Amortization of right-of-use assets
Schedule of Inventory, Current [Table Text Block]
Current portion of bank loans payable
Bank loans payable, net of current portion
Long-term portion of bank loans payable
Present value of net minimum lease payments, finance lease
Total Finance Lease Liabilities
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Bank loan payable
Loans Payable to Bank
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive Income Attributable to Trio-Tech International Common Shareholders
Non-Current, finance lease
us-gaap_FinanceLeaseLiabilityNoncurrent
Net of current portion of finance leases
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total future minimum lease payments, finance lease
Current, finance lease
Current portion of finance leases
Current portion of finance leases
Less: amount representing interest, finance lease
Less: amount representing interest, finance lease
2029, finance lease
2028, finance lease
Short-term investment
2028, finance lease
2027, finance lease
Concentration Risk [Table]
2031, finance lease
Subsequent Events [Text Block]
2030, finance lease
Concentration Risk Type [Axis]
2027, finance lease
2026, finance lease
Concentration Risk Disclosure [Text Block]
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: amount representing interest, operating lease
Non-current, operating lease
Operating leases, net of current portion
Net of current portion of operating leases
Present value of net minimum lease payments, operating lease
Total Operating Lease Liabilities
Current, operating lease
Current portion of operating leases
Current portion of operating leases
Accounts Receivable [Member]
Usage – disposition
Concentration Risk Type [Domain]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Two fiscal years after
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Three fiscal years after
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Next fiscal year
Other miscellaneous income
trt_OtherMiscellaneousNonoperatingIncomeExpense
Amount of income (expense) related to nonoperating activities, classified as miscellaneous.
CHINA
Income Tax Jurisdiction, Domestic State and Local [Member]
Standard Product Warranty, Policy [Policy Text Block]
us-gaap_LongTermDebt
Total obligations and commitments
Offsetting Assets [Table]
Loss Contingencies [Table]
Statement of Stockholders' Equity [Abstract]
us-gaap_OperatingLeaseIncomeComprehensiveIncomeExtensibleList
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]
Statement of Comprehensive Income [Abstract]
Statement of Cash Flows [Abstract]
TRIO-TECH INTERNATIONAL’S SHAREHOLDERS’ EQUITY:
Equity Components [Axis]
Share-Based Payment Arrangement [Policy Text Block]
Equity Component [Domain]
Offsetting Liabilities [Table]
Equity [Text Block]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Cost of Sales
us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)
(Reversal) / Addition of provision for obsolete inventory, net
Subsequent Event [Table]
Machinery and Equipment [Member]
Schedule of Subsidiary of Limited Liability Company or Limited Partnership, Description [Table Text Block]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Translation adjustment
us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Currency translation effect
Share-Based Payment Arrangement, Option [Member]
Supplementary Information of Cash Flows
CURRENT LIABILITIES:
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_CurrentFederalTaxExpenseBenefit
Federal, current
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign, current
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State, current
Customer Concentration Risk [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Forfeited or expired, options (in shares)
Revenue Benchmark [Member]
Lessee, Leases [Policy Text Block]
Diluted loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)
Diluted loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)
Common stock, par value (in dollars per share)
Stock option expense
Financial Assistance Received From the United States Government [Member]
Represents Financial Assistance Received From the United States Government.
Financial Assistance Received From the Chinese Government [Member
Represents Financial Assistance Received From the Chinese Government.
Other Commitments [Axis]
Other Commitments [Domain]
trt_NoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterestsAdjustmentsToRetainedEarnings
Acquisition of subsidiary without a change in control
Affect for retained earnings in the decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).
Debt Disclosure [Text Block]
Non-controlling interest
Use of Estimates, Policy [Policy Text Block]
Other Assets Disclosure [Text Block]
Noncontrolling Interest Disclosure [Text Block]
Issuance of common share in private placement, net of issuance cost
us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Dividend declared by subsidiary
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
Schedule of Other Assets [Table Text Block]
Noncontrolling Interest [Table]
CURRENT ASSETS:
Exercise of stock option
Schedule of Debt [Table Text Block]
us-gaap_AssetsCurrent
Total current assets
Issuance of common share in private placement, net of issuance cost (in shares)
Debt Instrument, Name [Domain]
Exercise of stock option (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)
Exercised, options (in shares)
Exercised, options (in shares)
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fixed Interest Rate
Effective rate
Equipment Under Finance Lease [Member]
Represents equipment under finance lease.
Property, plant and equipment before currency translation effect, net
The amount of property, plant, and equipment after accumulated depreciation and before currency translation.
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Currency translation effect
The monetary effect derived from currency translation.
trt_NetIncomeLossAvailableToCommonStockholdersContinuingAndDiscontinued
Net Loss Attributable to Trio-Tech International Common Shareholders
Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
Cash Flow from Operating Activities
Cash Flow from Investing Activities
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net Cash Provided by Operating Activities
Cash Flow from Financing Activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net Cash (Used in) / Provided by Investing Activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Cash Provided by / (Used in) Financing Activities
Commitments and Contingencies, Policy [Policy Text Block]
Government Grants [Table Text Block]
Tabular disclosure of information about government grants.
trt_NumberOfMajorCustomers
Number of Major Customers
The number of major customers.
Accounting Policies [Abstract]
trt_MonthlyLeaseRevenueAmount
Monthly Lease Revenue Amount
The monthly lease amount recognized as rental income during the period.
Other Liabilities Disclosure [Text Block]
Segments [Axis]
us-gaap_StockRepurchasedDuringPeriodValue
Stock Repurchased During Period, Value
us-gaap_StockRepurchasedDuringPeriodShares
Stock Repurchased During Period, Shares (in shares)
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign, deferred
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal, deferred
us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax liabilities
Deferred tax (benefit) / expenses
us-gaap_NetIncomeLoss
Net Loss Attributable to Trio-Tech International Common Shareholders
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net Income (Loss) Available to Common Stockholders, Basic
Net Loss Attributable to Trio-Tech International Common Shareholders
us-gaap_MembersEquityAttributableToNoncontrollingInterest
Beginning balance
Ending balance
Inventory valuation
us-gaap_DeferredTaxAssetsInventory
us-gaap_DeferredTaxAssetsGross
Total deferred tax assets
Net operating losses and credits
us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax assets
Deferred tax assets
us-gaap_DeferredTaxAssetsNet
Investment
us-gaap_DeferredTaxAssetsInvestmentInSubsidiaries
us-gaap_BusinessCombinationPriceOfAcquisitionExpected
Business Combination, Price of Acquisition, Expected
General business credit
us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury stock, at cost
Other receivables
Accrued vacation
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Accrued expense
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)
trt_TradeAccountsReceivableCreditTerm
Trade Accounts Receivable, Credit Term (Day)
Represents when payments are due from customers.
us-gaap_OpenTaxYear
Open Tax Year
Vesting [Axis]
Other Income / (Expense)
Vesting [Domain]
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
us-gaap_NonoperatingIncomeExpense
Total other income / (expense)
us-gaap_LiabilitiesNoncurrent
Total non-current liabilities
us-gaap_AssetsNoncurrent
Total non-current assets
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Written off
NON-CURRENT ASSETS:
Reconciliation of Equity Attributable to Noncontrolling Interest [Table Text Block]
The tabular disclosure for the reconciliation of equity attributable to noncontrolling interest.
us-gaap_DeferredTaxLiabilities
Deferred tax liabilities
Finance leases (Year)
us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1
NON-CURRENT LIABILITIES:
trt_DepositAssetsRestrictedCurrent
Restricted term deposits - Current
Represents current restricted deposits asset.
us-gaap_DeferredTaxLiabilitiesOther
Other
trt_DepositsAssetsRestrictedTermDepositsNoncurrentNet
Deposits Assets, Restricted Term Deposits, Noncurrent, Net
Amount of noncurrent restricted term deposits assets net of currency translation effect.
Customer C [Member]
Relating to Customer C.
Restricted term deposits - Non-current
Represents the amount of noncurrent restricted deposit assets.
trt_DepositsAssetsRestrictedCurrentNet
Deposits Assets, Restricted, Current, Net
Represents the amount of current restricted deposits assets, net of currency translation effects.
trt_CurrencyTranslationEffectRestrictedTermDepositsCurrent
Currency translation effect on restricted term deposits
Represents effect of current restricted term deposits for currency translation.
trt_CurrencyTranslationEffectRestrictedTermDepositsNoncurrent
Currency translation effect on restricted term deposits
Represents the effect of noncurrent restricted term deposits for currency translation.
us-gaap_SharesIssued
Balance (in shares)
Balance (in shares)
Document Type
us-gaap_LessorOperatingLeaseTermOfContract
Lessor, Operating Lease, Term of Contract (Month)
Other non-current liabilities
us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Document Information [Line Items]
Document Annual Report
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Operating leases (Year)
Document Information [Table]
us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)
Entity Interactive Data Current
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
Document Transition Report
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Number of shares used to compute earnings per share diluted (in shares)
Number of shares used to compute earnings per share - diluted (in shares)
Document Financial Statement Error Correction [Flag]
Accrued interest income, net of accrued interest expense
Represents accrued interest expense net of interest income.
us-gaap_DepositAssets
Total term deposits
Basic (in shares)
Weighted average number of common shares outstanding - basic (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage
Other Noncurrent Liabilities [Table Text Block]
trt_PaymentOfInterestPortionOfFinanceLease
Payment of interest portion of finance lease
Represents payment of interest portion of finance lease.
Retained Earnings [Policy Text Block]
Disclosure of retained earnings.
Liquidity [Policy Text Block]
The entire disclosure about liquidity.
Sales Tax [Policy Text Block]
The entire disclosure about taxes collected from customers and remitted to governmental authorities.
us-gaap_DepositsAssetsNoncurrent
Restricted term deposits
Term Deposits [Policy Text Block]
The entire discussion about term deposits.
us-gaap_NotesAndLoansReceivableGrossCurrent
Financing Receivable, before Allowance for Credit Loss, Current
Trio-tech (Jiangsu) Co. Ltd. [Member]
Related to entity.
Income Tax Jurisdiction [Axis]
ICFR Auditor Attestation Flag
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
Restricted Term Deposits [Policy Text Block]
Restricted term deposits policy.
Depreciation and Amortization
Depreciation, Depletion and Amortization, Nonproduction
Investment, Name [Domain]
Weighted average number of common shares outstanding
Weighted average number of basic and diluted shares outstanding.
Amendment Flag
Addition of income tax provision
The provision for income tax.
Common Stock [Member]
Document Period End Date
Property, Plant, and Equipment [Text Block]
Trio Tech Reliability Services Dormant [Member]
Represents Trio Tech Reliability Services Dormant.
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
Granted, options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
Trio Tech International Pte Ltd [Member]
Represents Trio Tech international Pte, Ltd.
Express Test Corporation Dormant [Member]
Represents express test corporation dormant.
Entity File Number
Entity Tax Identification Number
Additions charged to expenses
trt_InventoryRecallExpenseCredit
Reflects the amount charged (credited) against earnings comprised of the costs to announce and effect a recall of defective merchandise.
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Entity Well-known Seasoned Issuer
Entity Current Reporting Status
Entity Voluntary Filers
Entity Incorporation, State or Country Code
Acquisition of subsidiary shares from non-controlling interest
The accrued expense from the acquisition of subsidiary shares from non-controlling interests.
Current Fiscal Year End Date
trt_LessorAssetUnderOperatingLeaseTerm
Lessor Asset under Operating Lease, Term (Year)
Represents term for lessor asset under operating lease.
Entity Public Float
trt_FinanceLeaseCost
Total finance lease cost
Represents finance lease cost.
Research and development
Research and Development Expense
Entity Filer Category
us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease
Depreciation, Lessor Asset under Operating Lease
trt_ProvisionOfImpairmentLossOtherAssetsInvestmentProperties
Less: Provision for impairment
Amount of impairment loss recorded on other assets, classified as investment properties, as a result of valuation differences at the reporting date.
Entity Shell Company
Operating and Finance Leases of Lessee Disclosure [Table Text Block]
Tabular disclosure of operating and finance lease of lessee.
Entity Emerging Growth Company
Entity Small Business
Building and Building Improvements [Member]
Operating Income (Loss)
(Loss) / Income from Operations
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Cash
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)
Revenue
Trio-Tech International (Thailand) Co. Ltd. [Member]
Represents Trio-Tech International (Thailand) Co. Ltd.
Customer B [Member]
Related to customer B.
Trio-Tech (Bangkok) Co. Ltd [Member]
Represents Trio-Tech (Bangkok) Co. Ltd.
Trio-Tech (Malaysia) Sdn. Bhd [Member]
Represents Trio-Tech (Malaysia) Sdn. Bhd.
Inventory, Current [Table]
Entity Address, City or Town
KTS Incorporated, dba Universal Systems (Dormant) [Member]
Represents KTS incorporated, dba Universal Systems (Dormant).
Entity Address, Address Line One
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Universal (Far East) Pte. Ltd. [Member]
Represents Universal (Far East) Pte. Ltd.
Customer A [Member]
Related to customer A.
City Area Code
PT SHI Indonesia (Dormant) [Member]
Represents PT SHI Indonesia (Dormant).
Trio-Tech (Tianjin) Co., Ltd, [Member]
Represents Trio-Tech (Tianjin) Co., Ltd.
Accrued assurance warranty
The amount expense charged against earnings or the recovery to earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.
Term Deposits [Text Block]
Detail disclosure of term deposits.
Local Phone Number
Government Assistance, Type [Domain]
Term Deposits [Table Text Block]
Tabular disclosure of term deposits.
Entity Address, Postal Zip Code
Prestal Enterprise Sdn. Bhd. [Member]
Represents Prestal Enterprise Sdn. Bhd.
Entity Address, Country
Trio-Tech (SIP) Co., Ltd [Member]
Represents Trio-Tech (SIP) Co., Ltd.
Government Assistance [Text Block]
Trio-Tech (Chongqing) Co. Ltd [Member]
Represents Trio-Tech (Chongqing) Co. Ltd.
SHI International Pte. Ltd. (Dormant) [Member]
Represents SHI International Pte. Ltd. (Dormant).
trt_ShortTermDeposit
Short-term deposits
Represents short-term depoist.
Title of 12(b) Security
Security Exchange Name
trt_CurrencyTranslationEffectOnAccountsReceivable
Currency translation effect
Represents effect on accounts receivable for currency translation.
Trading Symbol
Loan Receivable From Property Development Projects [Text Block]
Detail disclosure of loan receivable from property development projects.
Currency translation effect on short-term deposits
Represents currency translation effect short term deposit.
Government grant
Government Assistance, Income, Increase (Decrease)
Mao Ye [Member]
Represents information related to Mao Ye.
Government Assistance [Table]
Semiconductor Back-end Solutions [Member]
Represents Semiconductor Back-end Solutions.
Subsidiaries [Member]
FuLi [Member]
Represents information related to Fuli.
Government Assistance, Type [Axis]
Prime Rate [Member]
Industrial Electronics [Member]
Represents Industrial Electronics.
Variable Rate [Domain]
Currency translation effect
trt_InventoryCurrencyTranslationEffect
Represents currency translation effect for inventory.
Entity Common Stock, Shares Outstanding
Currency translation effect
trt_CurrencyTranslationEffect
Represents currency translation effect.
Investment Property In China [Text Block]
Represents Investment property in China.
Earnings Per Share [Text Block]
trt_AccumulatedDepreciationOnRentalProperty
Less: Accumulated depreciation
Represents accumulated depreciation on rental property.
Short-term deposits
Total short-term deposits
Jiang Huai [Member]
Represents information related to Jiang Huai.
trt_DownPaymentForPurchaseOfInvestmentProperties
Downpayment for Purchase of Investment Properties*
Represents down payment for purchase of investment properties.
Line of Credit [Text Block]
Detail disclosure of line of credit.
Less: Net income attributable to non-controlling interest
Legal and audit
Represents legal and audit.
Sales tax
Represents accrued sales tax.
Net income
Net income
NET INCOME
Other Income and Other Expense Disclosure [Text Block]
Accrued purchase
Represents accrued purchase of materials and fixed assets.
Provision for reinstatement
Represents provision for reinstatement.
Currency translation effect
trt_AccruedCurrencyTranslationEffect
Represents accrued currency translation effect.
us-gaap_AccruedIncomeTaxesCurrent
Income taxes payable
Exercisable, aggregate intrinsic value
Property, Plant and Equipment [Member]
Investment, Name [Axis]
Granted, aggregate intrinsic value
The gross intrinsic value of the number of options granted in period.
Basis of Accounting, Policy [Policy Text Block]
Lessee and Lessor, Leases [Text Block]
The entire disclosures for the operating and financing leases of the lessee and lessor.
Long-term portion of bank loans payable
Represents gross long-term loan loans from bank.
Currency translation effect on current portion of bank loans
Represents effect on short-term portion of bank loan for currency translation.
Current portion of bank loans payable
trt_LoansPayableToBankCurrentGross
Represents current gross loan payable to bank.
Other Nonoperating Income (Expense)
Notes Payable To Banks 1 [Member]
Represents notes payable to banks 1.
trt_CurrencyTranslationEffectLongTermBankLoan
Currency translation effect on long-term portion of bank loans
Represents long-term bank loan for currency translation effect.
Assets
TOTAL ASSETS
Notes Payable To Banks 2 [Member]
Represents notes payable to banks 2.
trt_OwnershipPercentageAcquired
Ownership Percentage Acquired
Percentage of voting equity interest acquired.
Auditor Firm ID
Auditor Name
Geographical [Domain]
Auditor Location
Geographical [Axis]
us-gaap_NotesAndLoansReceivableNetCurrent
Net loan receivables from property development projects
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Income / (loss) from discontinued operations, net of tax
Trade accounts receivable, allowance for expected credit loss
Beginning
Ending
us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Income from Continuing Operations before Non-controlling Interest, Net of Tax
Diluted Loss per Share from Net Loss Attributable to Trio-Tech International (in dollars per share)
Diluted loss per share from net income attributable to Trio-Tech International (in dollars per share)
Amounts Attributable to Trio-Tech International Common Shareholders:
Customer [Axis]
us-gaap_DepreciationDepletionAndAmortization
Depreciation and amortization
Other rental income
trt_OtherRentalIncome
Represents other rental incoem.
trt_EffectOfExchangeRateOnOtherIncome
Exchange loss
Represents effect of exchange rate on other income.
Accounts and Financing Receivables [Table]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Dividend income
us-gaap_InvestmentIncomeDividend
Less: Comprehensive income / (loss) attributable to non-controlling interest
Comprehensive Income Attributable to Trio-Tech International Common Shareholders:
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive Income
trt_RepaymentOfOperatingLease
Repayment of operating lease
Represents the cash outflow for the repayment of operating lease
trt_DeferredTaxLiabilitiesRightofuseAssets
Right-of-use assets
Amount of deferred tax liability attributable to taxable temporary differences from right-of-use assets.
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
TOTAL EQUITY
Balance
Balance
Service [Member]
trt_LossAttributableToTriotechInternationalCommonShareholdersFromDiscontinuedOperationsNetOfTax
Income / (loss) attributable to Trio-Tech International common shareholders from discontinued operations, net of tax
Represents loss attributable to Triotech international common shareholders from discontinued operations, net of tax.
Noncontrolling Interest [Member]
Contract liabilities
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Schedule Of Future Minimum Rental Payments for Operating and Finance Leases [Table Text Block]
Tabular of future minimum rental payments for operating and finance leases.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Director Plan 2017 [Member]
Represents director plan 2017.
Other non-current liabilities
Other Liabilities, Noncurrent
Operating and Finance Leases Of Lessee Other Disclosure [Table Text Block]
Represents other disclosure of operating and finance lease of lessee.
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Sales rebate
The amount of accrued sales rebate.
Statistical Measurement [Axis]
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Trading Arrangements, by Individual [Table]
Material Terms of Trading Arrangement [Text Block]
Restricted Term-Deposits in Non-Current Assets
Total restricted term deposits - Non-current
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Comprehensive Income, Policy [Policy Text Block]
Minimum [Member]
Product and Service, Other [Member]
Insider Trading Policies and Procedures [Line Items]
Statistical Measurement [Domain]
Maximum [Member]
us-gaap_SharePrice
Share Price (in dollars per share)
Employee Stock Option Plan 2017 [Member]
Represents 2017 employee stock option plan.
Additions charged to expenses
Outstanding, weighted average remaining contractual term (Year)
Represents weighted average remaining contractual term for share-based compensation arrangement by share-based payment award.
Adjustment to rate differential, percent
Changes in valuation allowances, percent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective income tax rate, percent
US federal statutory tax rate, percent
Foreign tax effects, percent
trt_DeferredTaxAssetsNetLiabilitiesBeforeValuationAllowance
Subtotal
Amount, before allocation of valuation allowances and after deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
Granted, weighted average exercise price (in dollars per share)
Exercised, weighted average exercise price (in dollars per share)
Income Tax Jurisdiction [Domain]
Deposits for rental and utilities and others
State and local income taxes, net of federal income tax effect, percent
Return to provision adjustments, percent
Stock options, percent
Other
us-gaap_ContractualObligation
Contractual Obligation
Award Type [Axis]
Adjustments to reconcile net income to net cash flow provided by operating activities
Plan Name [Axis]
Plan Name [Domain]
Consolidation Items [Axis]
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Stock compensation
Consolidation Items [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Table Text Block]
Share-Based Payment Arrangement [Text Block]
Plant and Equipment, Net
Plant and equipment, at cost
us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation
Accumulated depreciation
Unrealized income from investment
us-gaap_InterestIncomeOther
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Table Text Block]
us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables
Less: allowance for expected credit losses
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Share-Based Payment Arrangement, Tranche One [Member]
Statement [Table]
Inland Revenue, Singapore (IRAS) [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
us-gaap_InvestmentsFairValueDisclosure
Investments, Fair Value Disclosure
Fixed asset basis
us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
State Administration of Taxation, China [Member]
Cayman Islands Tax Information Authority [Member]
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Product and Service [Domain]
Product and Service [Axis]
Ownership [Axis]
Ownership [Domain]
Consolidated Entities [Axis]
Useful life (Year)
Consolidated Entities [Domain]
Currency translation effect
trt_CurrencyTranslationEffectOtherAssets
Represents currency translation effect for other assets.
Ownership
Ownership Percentage
Percentage of ownership.
Accounts Payable
Statement [Line Items]
Utilization
us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Share Repurchase Program, Remaining Authorized, Amount
Fair Value of Financial Instruments, Policy [Policy Text Block]
Proceeds from issuance of Common Stock, net of issuance cost
Accounts payable
Restricted Term-Deposits in Current Assets
The amount of restricted term deposits classified as current.
Proceeds from lines of credit
Capital Expenditures
Accrued expense
Total
Payroll and related costs
Financial Assistance Received From the Singapore Government [Member]
Represents Financial Assistance Received From the Singapore Government.
Commissions
Utilities
Warranty
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term (Year)
Other accrued expense
Travel expenses
Carrying value as of the balance sheet date of the accrued travelling expenses.
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)
Income Tax Jurisdiction, Domestic Federal [Member]
Proceeds from disposal of property, plant and equipment
trt_GainLossOnSalesOfPropertyPlantEquipment
Gain on sale and write-off of property, plant and equipment
The amount of gain (loss) on sales of property, plant, and equipment.
Interest on finance lease
Share Repurchase Program [Table]
Proceeds from exercising stock options
Product Warranty Disclosure [Text Block]
us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition
Additions charged to cost and expense
us-gaap_ProductWarrantyAccrual
Beginning
Ending
Income Tax Jurisdiction, Foreign [Member]
Finance cash flows from finance leases
trt_FinanceLeasePrincipalPaymentsRecovery
Amount of cash outflow (inflow) for principal payment on finance lease.
Operating cash flows from finance leases
trt_FinanceLeaseInterestPaymentRecoveryOnLiability
Amount of interest paid (recovery) on finance lease liability.
Operating cash flows from operating leases
trt_OperatingLeasePaymentsRecovery
Amount of cash outflow (inflow) from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Carrying value
Property, plant, and equipment
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization
Provision for expected credit losses, net of recoveries
Deferred tax assets
Property, Plant, and Equipment [Policy Text Block]
Furniture and Fixtures [Member]
Supplier Finance Program [Table]
Deferred tax liabilities
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Fair Value Disclosures [Text Block]
us-gaap_GainLossOnDispositionOfAssets
Gain on disposal of property, plant and equipment
trt_PolicyTable
Trade Accounts Receivable
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Trade accounts receivable, less allowance for expected credit losses of $194 and $35, respectively
Withdrawal from unrestricted term deposits
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation
us-gaap_PaymentsToAcquireInvestments
Investment in unrestricted term deposits
Accumulated other comprehensive income-translation adjustments
Product Warranty Liability [Table]
General and administrative
(Loss) income before provision for income taxes
Income from Continuing Operations before Income Taxes
Paid-in capital
Prepaid expense 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)
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Additions to property, plant and equipment
us-gaap_PaymentsToAcquireShortTermInvestments
Purchase of short-term investment
Exercisable, weighted average remaining contractual term (Year)
Gross Profit (Loss)
Gross Margin
us-gaap_RealEstateAccumulatedDepreciation
Less: Accumulated depreciation
us-gaap_StockRepurchaseProgramPeriodInForce1
Share Repurchase Program, Period in Force (Year)
us-gaap_Depreciation
Depreciation
Cost
us-gaap_RealEstateInvestments
Real Estate Investments, Net
us-gaap_TreasuryStockValue
Treasury stock, at cost
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Investment properties, net
Financing Receivable [Policy Text Block]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Operating Segments [Member]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Segments [Domain]
Accounting Standards Update and Change in Accounting Principle [Text Block]
Accounts Receivable [Policy Text Block]
Diluted loss per share from continuing operations attributable to Trio-Tech International (in dollars per share)
Diluted loss per share from continuing operations attributable to Trio-Tech International (in dollars per share)
Basic loss per share from continuing operations attributable to Trio-Tech International (in dollars per share)
Basic loss per share from continuing operations attributable to Trio-Tech International (in dollars per share)
us-gaap_IncomeLossFromContinuingOperations
Loss from continuing operations, net of tax
Income Statement [Abstract]
Intersegment Eliminations [Member]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Basic loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)
Basic loss per share from discontinued operations attributable to Trio-Tech International (in dollars per share)
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Income / (Loss) from discontinued operations, net of tax
Discontinued Operations
Other long term liabilities
us-gaap_OtherSundryLiabilitiesNoncurrent
Treasury Stock, Common [Member]
us-gaap_OtherCommitment
Other Commitment
Income Tax Disclosure [Text Block]
Adjustment to rate differential
Income Tax, Policy [Policy Text Block]
Foreign tax effects
US federal statutory tax rate
us-gaap_AssetImpairmentCharges
Asset Impairment Charges, Total
Currency translation effect
us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss
us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Recovered
State and local income taxes, net of federal income tax effect
Return to provision adjustments
Stock options
us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
us-gaap_RepaymentsOfBankDebt
Payment of bank loans
us-gaap_RepaymentsOfLinesOfCredit
Payment on lines of credit
Statement of Financial Position [Abstract]
Income taxes
Cash paid for income taxes, net of refunds received
us-gaap_OtherAssets
Total
us-gaap_PaymentsToMinorityShareholders
Acquisition of non-controlling interest
Other assets
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of Common Stock
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
Operating Expense:
Concentration risk
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
Foreign
us-gaap_IncomeTaxPaidForeignAfterRefundReceived
Diluted Loss per Share:
us-gaap_OperatingExpenses
Total operating expense
Basic Loss per Share:
Dilutive effect of stock options (in shares)
Dilutive effect of stock options (in shares)
Antidilutive Security, Excluded EPS Calculation [Table]
us-gaap_EarningsPerShareBasic
Basic Loss per Share from Net Loss Attributable to Trio-Tech International (in dollars per share)
Research and Development Expense, Policy [Policy Text Block]
Effect of cross border tax laws
Effect of cross border tax laws, percent
Effective Income Tax Rate Reconciliation [Table]
State
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
Tax Jurisdiction of Domicile [Extensible Enumeration]
Earnings Per Share, Policy [Policy Text Block]
Federal
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
Granted, weighted average remaining contractual term (Year)
Weighted-average contractual term remaining for vested portion of option granted in period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
Restricted term deposits
Total restricted term deposits - Current
Operating Lease Costs
Business Combination [Domain]
us-gaap_RevenueRemainingPerformanceObligation
Revenue, Remaining Performance Obligation, Amount
Business Combination [Axis]
Disaggregation of Revenue [Table]
us-gaap_FinancingReceivableAllowanceForCreditLosses
Financing Receivable, Allowance for Credit Loss
Foreign currency translation, net of tax
us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Contract with Customer, Liability, Revenue Recognized
us-gaap_InterestExpenseNonoperating
Interest expense
Accumulated retained earnings
Retained Earnings (Accumulated Deficit)
Revenue from Contract with Customer [Text Block]
Class of Stock [Axis]
Revenue [Policy Text Block]
Property, Plant, and Equipment [Table]
us-gaap_NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
Loss attributable to Trio-Tech International common shareholders from continuing operations, net of tax
Long-Lived Asset, Class [Axis]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Office Lease Agreement and Test Facility Arrangements with Malaysia Subsidiary [Member]
Represents information pertaining to the office lease agreement and test facility arrangement with the Malaysia subsidiary.
Investment [Text Block]
Contract Liabilities
Contract with Customer, Liability
us-gaap_ContractWithCustomerLiabilityCurrent
Contract liabilities
Investment Holdings [Table]
Asset Class [Domain]
trt_SharebasedCompensationArrangementBySharebasedPaymentAwardQuarterlyInstallments
Share-Based Compensation Arrangement by Share-Based Payment Award, Quarterly Installments
The number of quarterly installments in a share based compensation arrangement.
trt_SharebasedCompensationArrangementBySharebasedPaymentAwardPercentageOfTotalInstallmentAward
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Total Installment Award
The percentage of the total installment award in a share-based compensation arrangement.
Interest
Inventory Disclosure [Text Block]
Property, plant and equipment, gross
Amount, before currency translation effect and accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.
Finished goods
Disaggregation of Income Statement Expense, Caption [Table]
Product [Member]
Inventories, less provision for obsolete inventories of $821 and $851, respectively
Inventory, Net
Other non-taxable or non-deductible Items
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible or nontaxable expenses.
Income Tax Authority in Malaysia [Member]
Represents the Income Tax Authority in Malaysia.
Customs Bond Arrangement [Member]
Represents information pertaining to customs bond arrangements.
Income Tax Authority in Thailand [Member]
Represents the Income Tax Authority in Thailand.
Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]
Raw materials
Tax credits
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.
Tax credits, percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.
Schedule of Line of Credit Facilities [Table Text Block]
Summary of Income Tax Paid [Table Text Block]
Tabular disclosure of income taxes paid to tax authorities during the period.
us-gaap_StockholdersEquity
Total Trio-Tech International shareholders’ equity
All Other Foreign Tax Authorities [Member]
Represents All Other Foreign Tax Authorities.
Other non-taxable or non-deductible Items, percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nontaxable or nondeductible expenses.
Penalties, percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to penalties.
Work in progress
Penalties
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to penalties.
Schedule of Other Nonoperating Income, by Component [Table Text Block]
trt_UnrealizedGainLossOnShorttermInvestments
Unrealized Gain (Loss) on Short-term Investments
Amount of unrealized gain (loss) on short-term investment.
Permanent items and credits
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent items and tax credits.
Provision for obsolete inventory
Less: provision for obsolete inventories
Beginning
Ending
Operating lease right-of-use assets
Notes Payable to Bank 4 [Member]
Represents notes payable to bank 4.
Property, Plant, and Equipment [Table Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Depreciation
Revenues
Revenue from Contract with Customer, Including Assessed Tax
Inventory, Policy [Policy Text Block]
Changes in valuation allowances
Real Estate Property, Ownership [Table]