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Note 12 - Retirement Benefits - Contributions to Defined Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Contributions to defined benefit plans	$ 1,522	$ 252	$ 3,483	$ 751
Remaining contributions to be made	392		392
UNITED STATES | Defined Benefit Plan, Funded Plan [Member]
Contributions to defined benefit plans	1,468	0	2,936	0
Remaining contributions to be made	0		0
UNITED STATES | Defined Benefit Plan, Unfunded Plan [Member]
Contributions to defined benefit plans	54	56	166	169
Remaining contributions to be made	50		50
UNITED KINGDOM
Contributions to defined benefit plans	0	196	381	582
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	279		279
IRELAND
Contributions to defined benefit plans	0	$ 0	0	$ 0
Remaining contributions to be made	$ 63		$ 63

X

- Definition

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

+ References

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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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