Note 9 - Sales to Customers (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Geographic Concentration Risk [Member] | UNITED STATES | ||
| Revenue, Net | $ 5,122 | $ 8,428 |
| Geographic Concentration Risk [Member] | CHINA | ||
| Revenue, Net | 2,797 | 2,500 |
| Geographic Concentration Risk [Member] | Asia - Other [Member] | ||
| Revenue, Net | 1,955 | 1,955 |
| Geographic Concentration Risk [Member] | Europe [Member] | ||
| Revenue, Net | 1,343 | 2,147 |
| Geographic Concentration Risk [Member] | All Other Countries [Member] | ||
| Revenue, Net | 712 | 1,012 |
| Revenue, Net | $ 11,929 | $ 16,042 |