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Note 11 - Retirement Benefits - Contributions to Defined Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Contributions to defined benefit plans	$ 52	$ 52
Remaining contributions to be made	1,515
UNITED STATES | Defined Benefit Plan, Funded Plan [Member]
Contributions to defined benefit plans	0	0
Remaining contributions to be made	1,002
UNITED STATES | Defined Benefit Plan, Unfunded Plan [Member]
Contributions to defined benefit plans	52	52
Remaining contributions to be made	159
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	287
IRELAND
Contributions to defined benefit plans	0	$ 0
Remaining contributions to be made	$ 67

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
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X

- 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

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