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TRADE ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables) | 6 Months Ended
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Dec. 31, 2019
Accounts Receivable, after Allowance for Credit Loss [Abstract] |
Changes in the allowance for doubtful accounts |
|  | Dec. 31, 2019 (Unaudited) |  | June 30, 2019
Beginning |  | $ | 263 |  |  | $ | 259 |
Additions charged to expenses |  |  | 315 |  |  |  | 94 |
Recovered |  |  | (270 | ) |  |  | (84 | )
Currency translation effect |  |  | (2 | ) |  |  | (6 | )
Ending |  | $ | 306 |  |  | $ | 263 |

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- Definition Custom Element. + References No definition available. + Details
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Namespace Prefix: | TRT_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountsReceivableNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration