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Consolidated Statements of Shareholders' Equity (Parentheticals) (USD $) | 12 Months Ended
--- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2010
Statement Of Stockholders Equity [Abstract] |  |  |
Issuance of common stock per share, less issuance costs |  | $ 0.90 | $ 2.00
Issuance cost of common stock |  | $ 230,087 | $ 1,613,425
Issuance of common stock per share |  | $ 2.064 | $ 0.90
Issuance cost of common stock |  | 838,705 | 504,095
Fair value of warrants issued |  | 1,917,122 |
Number of warrants exercised | 4,550 | 376,355 |
Exercise price of warrants | $ 2.20 | $ 2.2 |
Exercise of warrants at $1.13 in the issuance of common stock |  | 497,367 |
Par value exercise of 497,367 warrants |  | $ 1.13 |
Cashless exercise of warrants resulting in the issuance of common stock | 2,767 | 127,497 |
Conversion of preferred stock into common stock |  | $ 33,000 |

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- Definition This element represents cash less exercise of warrants in issuance of common stock. + References No definition available. + Details
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- Definition This element represents conversion of preferred stock in to common stock. + References No definition available. + Details
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- Definition This element represents exercise price per warrants. + References No definition available. + Details
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- Definition This element represents exercise price per warrants one. + References No definition available. + Details
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- Definition This element represents fair value of warrants issued. + References No definition available. + Details
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- Definition This element represents issuance cost of common Stock of an entity. + References No definition available. + Details
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Namespace Prefix: | usat_
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- Definition This element represents issuance cost of common Stock of an entity one. + References No definition available. + Details
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Namespace Prefix: | usat_
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Balance Type: | credit
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- Definition This element represents face amount or stated value of common stock per share. + References No definition available. + Details
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Namespace Prefix: | usat_
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Balance Type: | na
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- Definition This element represents face amount or stated value of common stock per share one. + References No definition available. + Details
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Namespace Prefix: | usat_
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Balance Type: | na
Period Type: | duration

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- Definition This element represents number of warrants exercised. + References No definition available. + Details
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- Definition This element represents number of warrants exercised one. + References No definition available. + Details
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- Details
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