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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, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Amortization of prior service credit	$ 61	$ 61	$ 122	$ 122
Interest cost	(1,551)	(991)	(3,084)	(2,045)
Expected return on plan assets	1,007	1,375	1,993	2,803
Total	$ (483)	$ 445	$ (969)	$ 880

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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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