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Note 2 - Summary of Presentation (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Share-Based Payment Arrangement, Expense | $ 27,087 | $ 21,853
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 49,299 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value | $ 22,971 | 16,866
Long-term Incentive Plans [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) | 10 years |
Share-Based Payment Arrangement, Expense | $ 2,656 | 6,954
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 24,026 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value | 6,671 |
Mortgage Servicing Rights ("MSRs") [Member] |  |
Servicing Asset at Fair Value, Amount | 179,858 | $ 172,833
Mortgage Servicing Rights (MSR) Impairment (Recovery) | $ 0 |
Fannie Mae Delegated Underwriting and Servicing (“DUS”) [Member] |  |
Financing Receivable, Originated, Guarantee Performance Percentage | 33.33% |
Minimum [Member] | Long-term Incentive Plans [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) | 5 years |
Minimum [Member] | Customer Lists and Relationships [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 4 years |
Minimum [Member] | Investment Management Contracts [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Minimum [Member] | Trademarks and Trade Names [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |
Minimum [Member] | Franchise Rights [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |
Minimum [Member] | Management Contracts and Other [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |
Maximum [Member] | Long-term Incentive Plans [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) | 10 years |
Maximum [Member] | Customer Lists and Relationships [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 20 years |
Maximum [Member] | Investment Management Contracts [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Maximum [Member] | Trademarks and Trade Names [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Maximum [Member] | Franchise Rights [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Maximum [Member] | Management Contracts and Other [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Building [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 20 years |
Building [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 40 years |
Vehicles [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |
Vehicles [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |
Furniture and Fixtures [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |
Furniture and Fixtures [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 10 years |
Computer Equipment [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |
Computer Equipment [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 7 years |
Leasehold Improvements [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 1 year |
Leasehold Improvements [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 10 years |

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