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Income Taxes (Tables)
12 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]  
Schedule of deferred tax assets and deferred tax liabilities

The tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities are as follows at June 30:

 

    2016 

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  $   $