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Note 17 - Contract Balances 1 (Details Textual) $ in Thousands	Sep. 30, 2021 USD ($)
Revenue, Remaining Performance Obligation, Amount	$ 505
Minimum [Member]
Percentage of Contract Consideration	70.00%
Maximum [Member]
Percentage of Contract Consideration	90.00%

X

- Definition

Represents percentage of contract consideration.

+ References

No definition available.

+ Details

Name:	trt_PercentageOfContractConsideration
Namespace Prefix:	trt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

+ Details

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

X

- Details

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

X

- Details

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