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Note 19 - Post-retirement Benefits - Movements in Fair Value of Level 3 Assets (Details) - Pension Plan [Member] - UNITED KINGDOM - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Opening balance	$ 203,630	$ 194,554
Ending balance	212,688	203,630
Fair Value, Inputs, Level 3 [Member]
Opening balance	292	14,786
Actual return on plan assets	5	4
Exchange differences	33	(2)
Contributions from the sponsoring companies	30	28
Settlement	0	(14,524)
Ending balance	$ 360	$ 292

X

- Definition

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(02)(A)
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X

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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- Definition

Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from settlement of trade associated with underlying investment.

+ References

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- Definition

Amount, measured using unobservable input, of increase in plan asset of defined benefit plan from purchase.

+ References

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+ References

No definition available.

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