Note 10 - Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) |
Jun. 30, 2017 |
Jun. 30, 2016 |
|---|---|---|
| Deferred Tax Assets: | ||
| Net operating loss carryforwards | $ 8,126,000 | $ 6,473,000 |
| Stock compensation | 1,646,000 | 1,503,000 |
| Other, net | 155,000 | 131,000 |
| Net deferred tax assets | 9,927,000 | 8,107,000 |
| Valuation allowance for deferred tax assets | (9,927,000) | (8,107,000) |
| Net deferred tax assets |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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