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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

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
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-SubTopic 20
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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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-Publisher FASB
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