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SUBSEQUENT EVENTS (Detail Textuals) (Subsequent Event, CEO Incentive Plan, USD $)
0 Months Ended
May 04, 2015
Subsequent Event | CEO Incentive Plan
 
Subsequent Event [Line Items]  
Number of shares vested 23,809us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ us-gaap_PlanNameAxis
= usat_CeoIncentivePlanMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Expense associated with vesting $ 33,332us-gaap_EmployeeBenefitsAndShareBasedCompensation
/ us-gaap_PlanNameAxis
= usat_CeoIncentivePlanMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember