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Accrued Expenses (Schedule of Accrued Expenses) (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Jun. 30, 2011
Schedule Of Accrued Liabilities [Line Items]    
Accrued expenses $ 608 $ 1,322
Personnel costs
    
Schedule Of Accrued Liabilities [Line Items]    
Accrued expenses 149 711
Professional fees
    
Schedule Of Accrued Liabilities [Line Items]    
Accrued expenses 262 434
Clinical
    
Schedule Of Accrued Liabilities [Line Items]    
Accrued expenses 181 140
Other
    
Schedule Of Accrued Liabilities [Line Items]    
Accrued expenses $ 16 $ 37