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Note 11 - Retirement Benefits - Contributions to Defined Benefit Plans (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021
Contributions to defined benefit plans | $ 52 | $ 52
Remaining contributions to be made | 440 |
UNITED STATES | Defined Benefit Plan, Funded Plan [Member] |  |
Contributions to defined benefit plans | 0 | 0
Remaining contributions to be made | 0 |
UNITED STATES | Defined Benefit Plan, Unfunded Plan [Member] |  |
Contributions to defined benefit plans | 52 | 52
Remaining contributions to be made | 148 |
UNITED KINGDOM |  |
Contributions to defined benefit plans | 0 | 0
Remaining contributions to be made | 0 |
GERMANY | Defined Benefit Plan, Unfunded Plan [Member] |  |
Contributions to defined benefit plans | 0 | 0
Remaining contributions to be made | 234 |
IRELAND |  |
Contributions to defined benefit plans | 0 | $ 0
Remaining contributions to be made | $ 58 |

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- Definition Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 + Details
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