| Note 9 - Income Taxes (Details Narrative) - USD ($) | Jun. 30, 2018 | Jun. 30, 2017 | 
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Deferred Tax Assets, Valuation Allowance | $ 8,589,000 | $ 9,927,000 | 
| Unrecognized Tax Benefits | $ 0 | $ 0 | 
| 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://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- References No definition available. 
 | 
| X | ||||||||||
| 
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 |