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Note 16 - Concentration of Customers (Details Textual) | Jun. 30, 2022 | Jun. 30, 2021
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Number of Major Customers | 2 | 2

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- Definition The number of major customers. + References No definition available. + Details
Name: | trt_NumberOfMajorCustomers
Namespace Prefix: | trt_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant