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Note 17 - Share Plans (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jun. 13, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jun. 13, 2019	Feb. 10, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)						9,100,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 112.66	$ 119.31	$ 282.2
Proceeds from Stock Options Exercised		$ 27,558	$ 7,815	$ 13,786
Payment, Tax Withholding, Share-Based Payment Arrangement		$ 24,769	$ 10,897	$ 40,923
Board of Directors Chairman [Member]
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)		14,814	16,174	8,572
Deferred Compensation Arrangement with Individual, Shares Granted (in shares)		8,484	8,832	5,008
Deferred Compensation Arrangement with Individual, Compensation Expense		$ 1,992	$ 1,846	$ 1,886
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense		$ 8,122	$ 8,229	$ 6,911
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		10 years
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)		9,701	31,030	17,376
Proceeds from Stock Options Exercised		$ 27,558	$ 7,815	$ 13,786
Payment, Tax Withholding, Share-Based Payment Arrangement		13,672	$ 4,895	$ 14,089
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 13,405
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 3 months 18 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)		78,465	50,577	92,008
Payment, Tax Withholding, Share-Based Payment Arrangement		$ 11,097	$ 6,002	$ 26,834
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 59,177
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 10 months 24 days
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Performance Measurement, Period (Year)		3 years
Restricted Stock and Performance Shares [Member]
Share-Based Payment Arrangement, Expense		$ 41,126	$ 27,263	$ 22,570
Minimum [Member]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 112.45	$ 110.86	$ 103.5
Performance Share Award, Percentage		0.00%
Maximum [Member]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 147.41	$ 119.57	$ 315.88
Performance Share Award, Percentage		200.00%
Equity Incentive Plan (Plan) [Member]
Share-Based Payment Arrangement, Expense		$ 0	$ 309	$ 2,379
The 2019 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)					2,700,000
Share-Based Payment Arrangement, Expense		$ 49,248	$ 35,183	$ 27,102
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	3,900,000

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