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Note 17 - Share Plans (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Year Ended December 31,
		2024				2023				2022
Weighted average grant date fair value per share		$	59.30			$	57.73			$	129.38
Assumptions:
Expected stock price volatility			49	%			45	%			38	%
Risk free interest rate			4.19	%			3.64	%			1.54	%
Expected annual dividend per share		$	-			$	-			$	-
Expected life of options (years)			6.25				6.25				6.25

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

		Number of Options				Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value ($ in thousands)
Outstanding as of December 31, 2021			1,342,131				64.29				5.5			$	386,069
Granted			109,266				282.20
Exercised			(137,305	)			36.91
Forfeited			(45,688	)			194.05
Outstanding as of December 31, 2022			1,268,404				81.35				4.9			$	47,764
Granted			208,392				119.31
Exercised			(159,316	)			42.46
Forfeited			(33,144	)			185.81
Outstanding as of December 31, 2023			1,284,336				89.64				5.0			$	75,587
Granted			118,681				112.66
Exercised			(310,201	)			57.20
Forfeited			(63,265	)			152.06
Outstanding as of December 31, 2024			1,029,551				96.10				4.9			$	78,310
Exercisable as of December 31, 2024			753,487				77.67				3.6			$	69,273

Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

		Shares				Weighted-Average Grant-Date Fair Value
Non-vested as of December 31, 2021			365,965			$	124.25
Granted			287,821				214.58
Vested			(234,284	)			83.52
Forfeited			(41,204	)			263.47
Non-vested as of December 31, 2022			378,298				203.04
Granted			425,099			$	117.62
Vested			(133,222	)			175.94
Forfeited			(44,789	)			213.80
Non-vested as of December 31, 2023			625,386				153.01
Granted			503,937			$	120.77
Vested			(206,435	)			177.28
Forfeited			(115,135	)			130.89
Non-vested as of December 31, 2024			807,753				127.07

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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