OTHER INCOME / (EXPENSES) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Other Income Expenses Details
Investment income deemed interest income	$ 16us-gaap_InvestmentIncomeNonoperating	$ 51us-gaap_InvestmentIncomeNonoperating	$ 68us-gaap_InvestmentIncomeNonoperating	$ 102us-gaap_InvestmentIncomeNonoperating
Allowance for doubtful loan receivables	(16)us-gaap_ProvisionForDoubtfulAccounts	(338)us-gaap_ProvisionForDoubtfulAccounts	(68)us-gaap_ProvisionForDoubtfulAccounts	(338)us-gaap_ProvisionForDoubtfulAccounts
Interest income	4us-gaap_InterestAndOtherIncome	1us-gaap_InterestAndOtherIncome	6us-gaap_InterestAndOtherIncome	2us-gaap_InterestAndOtherIncome
Other rental income	26us-gaap_OccupancyRevenue	60us-gaap_OccupancyRevenue	52us-gaap_OccupancyRevenue	165us-gaap_OccupancyRevenue
Exchange gain / (loss)	(59)TRT_EffectOfExchangeRateOnOtherIncome	(6)TRT_EffectOfExchangeRateOnOtherIncome	(70)TRT_EffectOfExchangeRateOnOtherIncome	32TRT_EffectOfExchangeRateOnOtherIncome
Other miscellaneous (expense) / income	36us-gaap_OtherNonoperatingIncome	27us-gaap_OtherNonoperatingIncome	66us-gaap_OtherNonoperatingIncome	(4)us-gaap_OtherNonoperatingIncome
Total	$ 7us-gaap_OtherIncome	$ (205)us-gaap_OtherIncome	$ 54us-gaap_OtherIncome	$ (41)us-gaap_OtherIncome

No authoritative reference available.

No definition available.

Name:	TRT_EffectOfExchangeRateOnOtherIncome
Namespace Prefix:	TRT_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Definition

The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

+ References

No definition available.

+ Details

Name:	us-gaap_InterestAndOtherIncome
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Revenue derived from the provision of short term lodging; it does not apply to lease or rental income. Includes hotel rooms, cruise revenue, and other revenue related to lodgings.

+ References

+ Details

Name:	us-gaap_OccupancyRevenue
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.4)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 4

-Article 7

+ Details

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- Definition

The aggregate amount of other income amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items.

+ References

+ Details

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.5)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

+ Details

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