Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7

+ Details

Name:	us-gaap_CapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents amount of financing obligations.

+ References

No definition available.

+ Details

Name:	usat_FinancingObligations
Namespace Prefix:	usat_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Prepaid expenses financed with long-term debt.

+ References

No definition available.

+ Details

Name:	usat_PrepaidExpensesFinancedWithLongTermDebt
Namespace Prefix:	usat_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=usat_OtherLoanAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=usat_AssignmentOfQuickstartLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT (Detail Textuals) - USD ($) $ in Thousands	9 Months Ended
LONG-TERM DEBT (Detail Textuals) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015	May. 31, 2015	Feb. 28, 2015
Debt Instrument [Line Items]
Loan agreements	$ 103	$ 103
Capital Lease Obligations
Debt Instrument [Line Items]
Capital lease obligations	$ 444
Capital Lease Obligations \| Minimum
Debt Instrument [Line Items]
Percentage of interest rate	5.60%
Capital Lease Obligations \| Maximum
Debt Instrument [Line Items]
Percentage of interest rate	9.00%
Other Loan Agreements
Debt Instrument [Line Items]
Percentage of interest rate	5.30%
Loan agreements	$ 103
Assignment Of Quickstart Leases
Debt Instrument [Line Items]
Financing lease obligations			$ 304	$ 1,800
Assignment Of Quickstart Leases \| Minimum
Debt Instrument [Line Items]
Percentage of interest rate	9.40%
Assignment Of Quickstart Leases \| Maximum
Debt Instrument [Line Items]
Percentage of interest rate	9.50%