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Note 3 - Term Deposits - Term Deposits (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Short-term deposits | $ 4,756 | $ 5,619 |
Currency translation effect on short-term deposits | 239 | (199) |
Total short-term deposits | 4,995 | 5,420 |
Restricted term deposits- Current | 711 | 0 |
Currency translation effect on restricted term deposits | 36 | 0 |
Total restricted term deposits-Current | 747 | 0 | $ 0
Restricted term deposits-Non-Current | 1,634 | 1,746 |
Currency translation effect on restricted term deposits | 108 | (68) |
Total restricted term deposits-Non-Current | 1,742 | 1,678 | $ 1,735
Total term deposits | $ 7,484 | $ 7,098 |

X
- Definition Represents effect of current restricted term deposits for currency translation. + References No definition available. + Details
Name: | trt_CurrencyTranslationEffectRestrictedTermDepositsCurrent
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the effect of noncurrent restricted term deposits for currency translation. + References No definition available. + Details
Name: | trt_CurrencyTranslationEffectRestrictedTermDepositsNoncurrent
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents currency translation effect short term deposit. + References No definition available. + Details
Name: | trt_CurrencyTranslationEffectShortTermDeposit
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents current restricted deposits asset. + References No definition available. + Details
Name: | trt_DepositAssetsRestrictedCurrent
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of noncurrent restricted deposit assets. + References No definition available. + Details
Name: | trt_DepositAssetsRestrictedNoncurrent
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents short-term depoist. + References No definition available. + Details
Name: | trt_ShortTermDeposit
Namespace Prefix: | trt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DepositAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the current portion of investments which are not defined as or included in marketable (debt, equity, or other) securities that are pledged or subject to withdrawal restrictions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=127002003&loc=SL6242269-115581 + Details
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X
- Definition This element represents the noncurrent portion of investments which are not defined as or included in marketable (debt, equity, or other) securities that are pledged or subject to withdrawal restrictions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=127002003&loc=SL6242269-115581 + Details
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