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Background and Business Description Rehabilitation Exit Support Agreement (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 29, 1991 | Dec. 31, 2018 | Dec. 31, 2024 | Dec. 31, 2023 | Apr. 30, 2013
Preferred stock, shares outstanding (in shares) |  |  | 0 | 0 |
Common stock, shares authorized |  |  | 130,000,000 | 130,000,000 |
Common stock, par value (in dollars per share) |  |  |  |  | $ 0.01
Preferred stock, shares authorized |  |  | 20,000,000 | 20,000,000 |
Preferred Stock, Par or Stated Value Per Share |  |  | $ 0.01 |  | $ 0.01
Common stock, shares issued |  |  | 48,875,167 | 46,659,144 |
Common Stock Voting Restrictions | 10.00% |  |  |  |
Common Stock Voting Restriction Less One Vote | 10.00% |  |  |  |
Common Stock Transfer Restrictions | 5.00% |  |  |  |
Common Stock Additional Transfer Restrictions |  | 5.00% |  |  |
Stockholders' Equity Attributable to Noncontrolling Interest |  |  | $ 197,755 | $ 52,958 |
Ambac Assurance Corporation |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  | 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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