| 
           Commitments and Contingencies - Additional Information (Detail) (USD $) 
        In Millions, unless otherwise specified  | 
        12 Months Ended | ||
|---|---|---|---|
| 
           Jun. 30, 2014 
         | 
        
           Jun. 30, 2013 
         | 
        
           Jun. 30, 2012 
         | 
      |
| Operating Leased Assets [Line Items] | |||
| Rent Expense | $ 1.6 | $ 0.7 | $ 0.8 | 
| X | ||||||||||
| 
             
- Details 
          
  | 
        
| X | ||||||||||
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- Definition 
          Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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