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Note 8 - Supplemental Equity and Accumulated Other Comprehensive Income (Loss) (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ 1.28 | $ 1.28 | $ 1.28
Stock Repurchased During Period, Shares (in shares) | 120,000 | 279,381 |
Stock Repurchased During Period, Average Share Price (in dollars per share) | $ 359.81 | $ 179.37 |
Interest Expense, Total | $ 13,952 | $ 19,197 | $ 21,705
Nonoperating Income (Expense), Total | (89,121) | 119,058 | (34,704)
Deferred Income Tax Expense (Benefit), Total | (28,013) | 13,607 | $ (14,021)
Changzhou Eminence Biotechnology [Member] |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest | 103 |  |
AOCI Attributable to Parent [Member] |  |  |
Deferred Income Tax Expense (Benefit), Total | (1,908) | $ (4,058) |
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI Attributable to Parent [Member] |  |  |
Interest Expense, Total | 8,598 |  |
Nonoperating Income (Expense), Total | 512 |  |
Reclassification from AOCI, Current Period, Tax, Total | $ 2,150 |  |

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