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Note 9 - Lines Of Credit- Line of Credit (Details) (Parentheticals) - Trio Tech International Pte Ltd [Member]	3 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
SIBOR Rate [Member]
Basis spread rate	1.20%	1.20%
London Interbank Offered Rate (LIBOR) [Member]
Basis spread rate		1.25%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Basis spread rate	1.25%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: