Note 11 - Income Taxes (Details Textual) - USD ($) |
Jun. 30, 2016 |
Jun. 30, 2015 |
---|---|---|
Domestic Tax Authority [Member] | ||
Operating Loss Carryforwards | $ 15,700,000 | $ 13,800,000 |
Foreign Tax Authority [Member] | Australian Taxation Office [Member] | ||
Operating Loss Carryforwards | 32,100,000 | 34,700,000 |
Foreign Tax Authority [Member] | Her Majesty's Revenue and Customs (HMRC) [Member] | ||
Operating Loss Carryforwards | 22,800,000 | 25,000,000 |
Foreign Tax Authority [Member] | Ministry of the Economy, Finance and Industry, France [Member] | ||
Operating Loss Carryforwards | 18,800,000 | 13,200,000 |
Unrecognized Tax Benefits | 0 | |
Deferred Tax Assets, Valuation Allowance | $ 36,200,000 | $ 27,100,000 |