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INCOME TAXES - Summary of Benefit from income taxes (Details) (USD $)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Income Tax Disclosure [Abstract]          
Income before benefit from income taxes $ (428,790)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ 138,806us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ (708,776)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ 855,474us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest  
Estimated annual effective tax rate   0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 64.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations  
Provision (benefit) for income taxes            
Reversal of provision for income taxes recorded for the six months ended December 31, 2013   (13,823)usat_ReversalOfProvisionForIncomeTaxes      
Benefit from reversal of valuation allowances   (26,713,897)usat_BenefitFromReversalOfValuationAllowances   (26,713,897)usat_BenefitFromReversalOfValuationAllowances  
Benefit from income taxes $ 137,820us-gaap_IncomeTaxExpenseBenefit $ (26,727,720)us-gaap_IncomeTaxExpenseBenefit $ 179,705us-gaap_IncomeTaxExpenseBenefit $ (26,713,897)us-gaap_IncomeTaxExpenseBenefit $ 27,255,398us-gaap_IncomeTaxExpenseBenefit