Note 9 - Lines Of Credit- Line of Credit (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2022	Jun. 30, 2022
Trio Tech International Pte Ltd [Member]
Credit Limitation	$ 4,397	$ 4,090
Unused credit	$ 4,397	$ 3,651
Trio Tech International Pte Ltd [Member] \| Minimum [Member]
Interest Rate	1.85%	1.85%
Trio Tech International Pte Ltd [Member] \| Maximum [Member]
Interest Rate	5.50%	5.50%
Universal (Far East) Pte. Ltd. [Member]
Credit Limitation	$ 1,047	$ 1,076
Unused credit	$ 565	$ 586
Universal (Far East) Pte. Ltd. [Member] \| Minimum [Member]
Interest Rate	1.85%	1.85%
Universal (Far East) Pte. Ltd. [Member] \| Maximum [Member]
Interest Rate	5.50%	5.50%
Trio-Tech (Malaysia) Sdn. Bhd.[Member]
Credit Limitation	$ 327	$ 338
Unused credit	$ 327	$ 338
Trio-Tech (Malaysia) Sdn. Bhd.[Member] \| Cost of Funds Rate [Member]
Interest Rate	2.00%	2.00%

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=trt_TrioTechInternationalPteLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trt_UniversalFarEastPteLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trt_TriotechMalaysiaSdnBhdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=trt_CostOfFundsRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: