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COMMON STOCK WARRANTS AND OPTIONS (Detail Textuals) (USD $)						1 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Warrant	Jun. 30, 2011 Warrant	Mar. 17, 2011 Warrant	Oct. 31, 2008 Warrant SAC	Oct. 17, 2007 Warrant SAC	Jun. 30, 2009 Warrant SAC Maximum	Mar. 14, 2007 Warrant SAC Maximum	Jun. 30, 2009 Warrant SAC Minimum	Mar. 14, 2007 Warrant SAC Minimum
Class of Warrant or Right [Line Items]
Number of common stock warrants not exercisable until September 18, 2011				4,264,000
Warrants issued					364,000		17,532	903,955	903,955	833,333	833,333
Exercise price of shares to be purchased as warrants	2.6058	2.6058			2.6058		7.70	6.40	6.40	5.90	5.90
Granting of the pre-emptive right to purchase number of securities by the SAC						5 years
Date of exercise of warrants						Sep. 14, 2013
Percentage of maximum beneficial ownership by SAC and its affiliates can exercise						9.99%
Common stock warrant liability recorded			$ 1,126	$ 93,624

X

- Definition

This element represents number of common stock warrants not exercisable.

+ References

No definition available.

+ Details

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Namespace Prefix:	usat_
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Balance Type:	na
Period Type:	instant

X

- Definition

This represents the common stock warrant liability.

+ References

No definition available.

+ Details

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

X

- Definition

This represents the date of exercise of warrants.

+ References

No definition available.

+ Details

Name:	usat_DateOfExerciseOfWarrants
Namespace Prefix:	usat_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This represents period for which the pre emptive right to purchase number of securities granted.

+ References

No definition available.

+ Details

Name:	usat_GrantingOfPreEmptiveRightToPurchaseNumberOfSecuritiesPeriod
Namespace Prefix:	usat_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This represents the maximum ownership that can be acquired by the SAC group.

+ References

No definition available.

+ Details

Name:	usat_MaximumBeneficialOwnershipPercentage
Namespace Prefix:	usat_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise price of each class of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 4

-Article 4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Details

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

X

- Definition

The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
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