Consolidated Statement of Shareholders' Equity (Unaudited) (Parentheticals) (USD $)	3 Months Ended
Sep. 30, 2013
Statement Of Stockholders Equity [Abstract]
Exercise of warrants at $1.13 in the issuance of common stock	118,141
Exercise price of warrants	$ 1.13

This element represents number of warrants exercised.

No definition available.

Name:	usat_NumberOfWarrantsExercised
Namespace Prefix:	usat_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration