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Business and Basis of Presentation Noncontrolling Interests (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Background And Basis Of Presentation [Line Items] |  |
Foreign Exchange | $ 3,797 |
Stockholders' Equity Attributable to Noncontrolling Interest | 173,827 | $ 197,755
Reclassification from nonredeemable noncontrolling interest including remeasurement at fair value | 42,180 |
Reclassification to nonredeemable noncontrolling interest | (1,877) |
Insurance Distribution |  |
Background And Basis Of Presentation [Line Items] |  |
Stockholders' Equity Attributable to Noncontrolling Interest | $ 122,909 | $ 146,837
Ambac Assurance Corporation [Member] |  |
Background And Basis Of Presentation [Line Items] |  |
Preferred Stock, Shares Outstanding | 4,596 | 4,596
Preferred Stock, Liquidation Preference, Value | $ 114,900 | $ 114,900
Stockholders' Equity Attributable to Noncontrolling Interest | $ 50,918 |

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