Note 4 - Acquisitions (Details Textual)	12 Months Ended
Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Number of Businesses Acquired	3	12
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 22,168,000	$ 483,159,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		714,775
Acquisitions after December 31, 2008 [Member]
Business Combination, Contingent Consideration, Liability	44,712,000	91,229,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low	347,079,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	404,458,000
Contingent Consideration Paid	56,530,000	125,514,000
Acquisitions after December 31, 2008 [Member] \| Contingent Consideration, Compensation Element [Member]
Business Combination, Contingent Consideration, Liability	90,480,000	$ 61,870,000
Customer Lists and Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 37,312,000
Asia Pacific [Member]
Number of Businesses Acquired	2
Americas [Member]
Number of Businesses Acquired	1

The contingent consideration paid.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

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-Name Accounting Standards Codification
-Topic 805
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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

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- Definition

For contingent consideration arrangements and indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 55
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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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