Note 11 - Retirement Benefits - Contributions to Defined Benefit Plans (Details) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2026 USD ($)	Mar. 31, 2026 USD ($)
Contributions to defined benefit plans	$ 2,556	$ 5,352
Remaining contributions to be made	1,590	1,590
UNITED STATES \| Defined Benefit Plan, Funded Plan [Member]
Contributions to defined benefit plans	2,324	5,066
Remaining contributions to be made	1,484	1,484
UNITED STATES \| Defined Benefit Plan, Unfunded Plan [Member]
Contributions to defined benefit plans	25	79
Remaining contributions to be made	37	37
GERMANY \| Defined Benefit Plan, Unfunded Plan [Member]
Contributions to defined benefit plans	207	207
Remaining contributions to be made	$ 69	$ 69

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

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+ Details