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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, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Amortization of prior service credit	$ 61	$ 61	$ 122	$ 122
Interest cost	(991)	(840)	(2,045)	(1,677)
Expected return on plan assets	1,375	1,150	2,803	2,331
Total	$ 445	$ 371	$ 880	$ 776

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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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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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