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Note 12 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Foreign currency translation reserves reclassification	5.60%	1.60%	(0.30%)
UNITED KINGDOM
UK statutory corporation tax rate	25.00%	23.50%	19.00%
Effect of foreign tax rates	(1.70%)	0.10%	6.30%
Equity-based compensation	0.40%	0.30%	0.70%
Tax adjustments	0.90%	0.50%	2.00%
Impact of changes in statutory tax rates on deferred taxes	0.00%	(1.90%)	(1.30%)
Taxes applicable to prior years	(1.20%)	(1.90%)	(4.50%)
Other, net	(1.70%)	(3.40%)	0.30%
Effective income tax rate, controlling interest	27.30%	18.80%	22.20%
Net loss (income) attributable to noncontrolling interests	(0.10%)	0.20%	4.70%
Total effective income tax rate	27.20%	19.00%	26.90%

X

- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to controlling interest income (loss) exempt from income taxes.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign currency translation reserves reclassification.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations attributable to deduction. Includes, but is not limited to, dividend deduction, deduction for dividend paid to employee stock ownership plan (ESOP), Medicare prescription drug benefit subsidy deduction, and other deductions.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.

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