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Note 18 - Post-retirement Benefits - Net Periodic Benefit Cost (Details) - UNITED KINGDOM - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Amortization of prior service credit	$ 61	$ 61	$ 122	$ 122
Interest cost	(1,574)	(1,551)	(3,178)	(3,084)
Expected return on plan assets	1,909	1,007	3,835	1,993
Total	$ 396	$ (483)	$ 779	$ (969)

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- Definition

Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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