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           Related Party Transactions - Additional Information (Detail) (USD $) 
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        12 Months Ended | |
|---|---|---|
| 
           Jun. 30, 2013 
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           Jun. 30, 2012 
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      |
| Related Party Transaction [Line Items] | ||
| Charger products purchased | $ 29,000 | $ 85,000 | 
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           Term Sheet Agreement 
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| Related Party Transaction [Line Items] | ||
| Percentage of distribution fee on gross profits | 20.00% | |
| Distribution fee and royalties | 200,000 | |
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           Manufacturing Implementation Agreement 
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| Related Party Transaction [Line Items] | ||
| Cash paid for related party transaction | $ 108,000 | $ 263,000 | 
| X | ||||||||||
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- Definition 
          Distribution Fee And Royalties No definition available. 
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| X | ||||||||||
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- Definition 
          Distribution Fee Percentage on Gross Profits No definition available. 
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| X | ||||||||||
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- Definition 
          The cash outflow for purchase of charger products from related party during the period. No definition available. 
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| X | ||||||||||
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- Definition 
          Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Details 
          
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