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ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Mar. 31, 2015
Jun. 30, 2014
Notes to Financial Statements    
Beginning $ 438us-gaap_AllowanceForDoubtfulAccountsReceivable $ 139us-gaap_AllowanceForDoubtfulAccountsReceivable
Additions charged to expenses 56us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease 303us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Recovered (6)us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries (2)us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Currency translation effect (30)TRT_CurrencyTranslationEffectOnAccountsReceivable (2)TRT_CurrencyTranslationEffectOnAccountsReceivable
Ending $ 458us-gaap_AllowanceForDoubtfulAccountsReceivable $ 438us-gaap_AllowanceForDoubtfulAccountsReceivable