Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Definition

Area of Leased Office

+ References

No definition available.

+ Details

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Namespace Prefix:	usat_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=usat_DenverColoradoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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SUBSEQUENT EVENTS (Details) $ in Thousands			12 Months Ended
SUBSEQUENT EVENTS (Details) $ in Thousands	Aug. 01, 2019 USD ($) ft²	Jul. 19, 2019 USD ($) ft²	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Subsequent Event [Line Items]
Base rent			$ 1,600	$ 1,200	$ 700
Subsequent Event \| Denver, Colorado
Subsequent Event [Line Items]
Area of leased office space \| ft²	16,713	16,713
Lease term	89 months	89 months
Base rent	$ 45	$ 45
Subsequent Event \| Maximum \| Denver, Colorado
Subsequent Event [Line Items]
Base rent	$ 53	$ 53