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OTHER ASSETS - Other assets (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Jun. 30, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Down-payment for property, plant and equipment $ 1,916us-gaap_PrepaidExpenseAndOtherAssets $ 1,103us-gaap_PrepaidExpenseAndOtherAssets
Deposit for rental and utilities 152us-gaap_DepositsRetail 158us-gaap_DepositsRetail
Others    2us-gaap_OtherAssetsMiscellaneous
Currency translation effect (39)TRT_CurrencyTranslationEffectOtherAssets   
Ending balance $ 2,029us-gaap_OtherAssets $ 1,263us-gaap_OtherAssets