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Income Taxes (Details) - USD ($)
Jun. 30, 2015
Jun. 30, 2014
Deferred Tax Assets:    
Net operating loss and credit carryforwards $ 33,279,000 $ 33,098,000
Intangible assets 6,000 75,000
Capital loss and R&D credits 1,500,000 1,454,000
Research development expenses 657,000 639,000
Inventory 135,000 128,000
Accrued expenses and other 306,000  
Gross deferred tax assets 35,883,000 35,394,000
Valuation allowance for deferred tax assets (35,789,000) (35,136,000)
Total deferred tax assets 94,000 258,000
Deferred Tax Liabilities:    
Depreciation and other (94,000) (258,000)
Total deferred tax liabilities $ (94,000) $ (258,000)