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Note 2 - Summary of Presentation (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement, Expense | $ 21,853 | $ 14,349
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | 41,873 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $ 16,866 | 11,986
Long-term Incentive Plans [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) | 10 years |
Share-Based Payment Arrangement, Expense | $ 6,954 | 7,316
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | 34,930 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | 0 |
Mortgage Servicing Rights ("MSRs") [Member] |  |
Servicing Asset at Fair Value, Amount, Ending Balance | 172,833 | $ 126,162
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) | 5 years |
Leasehold Improvements [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life (Year) | 10 years |

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