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Note 12 - Retirement Benefits - Contributions to Defined Benefit Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Contributions to defined benefit plans | $ 49 | $ 52 | $ 101 | $ 104
Remaining contributions to be made | 390 |  | 390 |
UNITED STATES | Defined Benefit Plan, Funded Plan [Member] |  |  |  |
Contributions to defined benefit plans | 0 | 0 | 0 | 0
Remaining contributions to be made | 0 |  | 0 |
UNITED STATES | Defined Benefit Plan, Unfunded Plan [Member] |  |  |  |
Contributions to defined benefit plans | 49 | 52 | 101 | 104
Remaining contributions to be made | 98 |  | 98 |
UNITED KINGDOM |  |  |  |
Contributions to defined benefit plans | 0 | 0 | 0 | 0
Remaining contributions to be made | 0 |  | 0 |
GERMANY | Defined Benefit Plan, Unfunded Plan [Member] |  |  |  |
Contributions to defined benefit plans | 0 | 0 | 0 | 0
Remaining contributions to be made | 234 |  | 234 |
IRELAND |  |  |  |
Contributions to defined benefit plans | 0 | $ 0 | 0 | $ 0
Remaining contributions to be made | $ 58 |  | $ 58 |

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