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Note 4 - Trade Accounts Receivable and Allowance for Doubtful Accounts (Tables) | 6 Months Ended
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Dec. 31, 2021
Notes Tables |
Changes In Allowance For Doubtful Accounts [Table Text Block] |
|  | Dec. 31, 2021 (Unaudited) |  |  | June 30, 2021 |
Beginning |  | $ | 311 |  |  | $ | 314 |
Additions charged to expenses |  |  | 44 |  |  |  | 5 |
Recovered |  |  | (105 | ) |  |  | (14 | )
Write-off |  |  | - |  |  |  | (16 | )
Currency translation effect |  |  | 2 |  |  |  | 22 |
Ending |  | $ | 252 |  |  | $ | 311 |

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- Definition Tabular disclosure of changes in allowance for doubtful accounts. + References No definition available. + Details
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Namespace Prefix: | trt_
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Balance Type: | na
Period Type: | duration

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