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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Jun. 30, 2012
Deferred Income Tax Assets And Liabilities [Line Items]    
Net operating loss carryforwards $ 68,141 $ 73,087
Research credits 4,171 3,688
Capitalized research and development 4 4
Stock compensation 473 599
Accruals and Reserves 139 348
Other 350 504
Total deferred tax assets 73,278 78,230
Valuation allowance for deferred tax assets (73,216) (78,168)
Net deferred tax assets, included in other assets $ 62 $ 62