Note 17 - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Jun. 30, 2014 |
|---|---|---|
| Fair Value, Inputs, Level 1 [Member] | ||
| Cash equivalents | $ 84,192 | $ 117,683 |
| Available-for-sale securities | ||
| Total | $ 84,192 | $ 117,683 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Cash equivalents | ||
| Available-for-sale securities | $ 2,198 | $ 18,153 |
| Total | $ 2,198 | $ 18,153 |
| Fair Value, Inputs, Level 3 [Member] | ||
| Cash equivalents | ||
| Available-for-sale securities | ||
| Total | ||
| Cash equivalents | $ 84,192 | $ 117,683 |
| Available-for-sale securities | 2,198 | 18,153 |
| Total | $ 86,390 | $ 135,836 |