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Income Taxes (Details) (USD $) | Jun. 30, 2012 | Jun. 30, 2011
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and credit carryforwards | $ 36,606,000 | $ 36,370,000
Intangible assets | 248,000 | 335,000
Capital loss and R&D credits | 1,496,000 | 1,397,000
Research development expenses | 694,000 | 780,000
Inventory | 57,000 | 80,000
Accrued expenses and other | 110,000 | 59,000
Gross deferred tax assets | 39,211,000 | 38,949,000
Valuation allowance for deferred tax assets | (38,800,000) | (38,558,000)
Total deferred tax assets | 411,000 | 391,000
Deferred tax liabilities: |  |
Depreciation and other | (411,000) | (391,000)
Net deferred tax liability |  |

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