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Note 17 - Share-based Compensation - Equity-based Compensation Expenses Related to Performance-based Shares (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Total expense | $ 100 | $ 1,000 | $ 1,300
Restricted Stock Units (RSUs) [Member] |  |  |
Total expense | (131) | 537 | 806
Restricted Stock Units (RSUs) [Member] | Granted Within the Fiscal Year Ended June 30, 2016 [Member] |  |  |
Total expense | 5 | 92 | 794
Restricted Stock Units (RSUs) [Member] | Granted Within the Fiscal Year Ended June 30, 2017 [Member] |  |  |
Total expense |  | (12) | 12
Restricted Stock Units (RSUs) [Member] | Granted Within the Fiscal Year Ended June 30, 2018 [Member] |  |  |
Total expense | (457) | 457 |
Restricted Stock Units (RSUs) [Member] | Granted Within the Fiscal Year Ended June 30, 2019 [Member] |  |  |
Total expense | $ 321 |  |

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