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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, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Total expense | $ 1,300 | $ 300 | $ 100
Performance Shares [Member] |  |  |
Total expense | 870 | 160 | (131)
Granted Within the Fiscal Year Ended June 30, 2016 [Member] | Performance Shares [Member] |  |  |
Total expense | 0 | 0 | 5
Granted Within the Fiscal Year Ended June 30, 2017 [Member] | Performance Shares [Member] |  |  |
Total expense | 0 | 0 | 0
Granted Within the Fiscal Year Ended June 30, 2018 [Member] | Performance Shares [Member] |  |  |
Total expense | 0 | 0 | (457)
Granted Within the Fiscal Year Ended June 30, 2019 [Member] | Performance Shares [Member] |  |  |
Total expense | 335 | 101 | 321
Granted Within the Fiscal Year Ended June 30, 2020 [Member] | Performance Shares [Member] |  |  |
Total expense | 234 | 59 | 0
Granted Within the Fiscal Year Ended June 30, 2021 [Member] | Performance Shares [Member] |  |  |
Total expense | $ 301 | $ 0 | $ 0

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