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Note 4 - Acquisitions (Details Textual) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2024 | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Aug. 31, 2024
Number of Businesses Acquired | 2 | 7 | 3 |
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  | $ 37,266 | $ 22,168 |
Customer Lists and Relationships [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | 222,681 |  |
Asia Pacific [Member] |  |  |  |
Number of Businesses Acquired |  |  | 2 |
Americas [Member] |  |  |  |
Number of Businesses Acquired |  |  | 1 |
Englobe Corp. [Member] |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 89.00%
Business Acquisition, Number of Professionals |  |  |  | 2,800
Business Acquisition, Number of Locations |  |  |  | 71
Business Acquisition, Number of Provinces |  |  |  | 9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | 216,994 |  |
All Acquisitions [Member] |  |  |  |
Business Combination, Contingent Consideration, Liability |  | 36,695 | $ 44,712 |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low |  | 249,099 |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  | 345,340 |  |
Contingent Consideration Paid |  | 3,468 | 56,530 |
All Acquisitions [Member] | Contingent Consideration, Compensation Element [Member] |  |  |  |
Business Combination, Contingent Consideration, Liability |  | $ 44,280 | $ 90,480 |
Real Estate Services [Member] |  |  |  |
Number of Businesses Acquired |  | 1 |  |
Engineering [Member] |  |  |  |
Number of Businesses Acquired |  | 6 |  |

X
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 + Details
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