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Note 10 - Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Indefinite life intangible assets | $ 52,340 | $ 52,608
Finite life intangible assets, gross | 1,686,809 | 1,535,475
Accumulated amortization | 555,563 | 507,612
Finite life intangible assets, net | 1,131,246 | 1,027,863
Intangible assets, gross | 1,739,149 | 1,588,083
Intangible assets, net | 1,183,586 | 1,080,471
Customer Lists and Relationships [Member] |  |
Finite life intangible assets, gross | 882,336 | 707,355
Accumulated amortization | 255,651 | 218,435
Finite life intangible assets, net | 626,685 | 488,920
Investment Management Contracts [Member] |  |
Finite life intangible assets, gross | 525,661 | 591,826
Accumulated amortization | 167,806 | 181,653
Finite life intangible assets, net | 357,855 | 410,173
Mortgage Servicing Rights ("MSRs") [Member] |  |
Finite life intangible assets, gross | 207,990 | 188,489
Accumulated amortization | 101,562 | 84,058
Finite life intangible assets, net | 106,428 | 104,431
Trademarks and Trade Names [Member] |  |
Finite life intangible assets, gross | 28,947 | 27,563
Accumulated amortization | 8,898 | 7,486
Finite life intangible assets, net | 20,049 | 20,077
Management Contracts and Other [Member] |  |
Finite life intangible assets, gross | 15,210 | 13,893
Accumulated amortization | 9,201 | 10,547
Finite life intangible assets, net | 6,009 | 3,346
Brokerage Backlog [Member] |  |
Finite life intangible assets, gross | 26,665 | 6,349
Accumulated amortization | 12,445 | 5,433
Finite life intangible assets, net | 14,220 | 916
Licensing Agreements [Member] |  |
Indefinite life intangible assets | 29,200 | 29,200
Trademark and Trade Names [Member] |  |
Indefinite life intangible assets | $ 23,140 | $ 23,408

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480265/350-10-S45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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