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Income Taxes (Details 3) - USD ($)
Jun. 30, 2017
Jun. 30, 2016
Deferred tax assets:    
Net operating loss and credit carryforwards $ 29,014,000 $ 32,440,000
Stock-based compensation 943,000 813,000
R&D and other credits 1,983,000 1,517,000
Capitalized R&D expenses 562,000 576,000
Inventory 243,000 177,000
Accrued expenses and other 407,091 492,000
Gross deferred tax assets 33,152,091 36,015,000
Valuation allowance for deferred tax assets (27,886,000) (35,971,000)
Total deferred tax assets 5,266,091 44,000
Deferred tax liabilities:    
Depreciation and other (1,187,440) (44,000)
Intangible assets (3,976,000)  
Total deferred tax liabilities (5,163,440) $ (44,000)
Net deferred tax liability $ 102,651