Note 10 - Income Taxes (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Domestic Tax Authority [Member] | ||
| Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | $ 17,789,000 | $ 14,041,000 |
| Operating Loss Carryforwards | 110,819,000 | |
| Tax Credit Carryforward, Amount | 1,418,000 | |
| Foreign Tax Authority [Member] | ||
| Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 799,000 | 811,000 |
| State and Local Jurisdiction [Member] | ||
| Operating Loss Carryforwards | $ 45,284,000 | |
| Tax Credit Carryforward, Amount | 1,437,000 | |
| Income Tax Benefit | $ 0 | |
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 34.00% | |
| Deferred Income Tax Expense (Benefit) | $ 0 | |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 3,484,000 | |
| Tax Benefits Related To Stock Options Included In Valuation Allowance | $ 219,000 | |