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Income Taxes (Details) - USD ($) | Jun. 30, 2016 | Jun. 30, 2015
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and credit carryforwards | $ 32,440,000 | $ 33,279,000
Intangible assets |  | 6,000
Stock-based compensation | 813,000 |
Capital loss and R&D credits | 1,517,000 | 1,500,000
Research development expenses | 576,000 | 657,000
Inventory | 177,000 | 135,000
Accrued expenses and other | 492,000 | 306,000
Gross deferred tax assets | 36,015,000 | 35,883,000
Valuation allowance for deferred tax assets | (35,971,000) | (35,789,000)
Total deferred tax assets | 44,000 | 94,000
Deferred tax liabilities: |  |
Depreciation and other | (44,000) | (94,000)
Total deferred tax liabilities | (44,000) | (94,000)
Net deferred tax liability |  |

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