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Investment Partnerships - Fair Value and Adjustments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Increase (Decrease) In Equity Method Investments [Roll Forward] |  |  |  |
Investment partnership gains (losses) | $ 58,504 | $ (79,890) | $ 8,912 | $ (57,905)
Fair Value |  |  |  |
Increase (Decrease) In Equity Method Investments [Roll Forward] |  |  |  |
Partnership interest, beginning balance |  |  | 656,266 | 472,772
Investment partnership gains (losses) |  |  | 68,515 | (12,645)
Distributions (net of contributions) |  |  | 4,935 |
Contributions (net of distributions) |  |  |  | 21,924
Changes in proportionate share of Company stock held |  |  |  |
Partnership interest, ending balance | 719,846 | 482,051 | 719,846 | 482,051
Company Common Stock |  |  |  |
Increase (Decrease) In Equity Method Investments [Roll Forward] |  |  |  |
Partnership interest, beginning balance |  |  | 454,539 | 273,669
Investment partnership gains (losses) |  |  | 59,603 | 45,260
Distributions (net of contributions) |  |  |  |
Contributions (net of distributions) |  |  |  |
Changes in proportionate share of Company stock held |  |  | 2,811 | 4,391
Partnership interest, ending balance | 516,953 | 323,320 | 516,953 | 323,320
Carrying Value |  |  |  |
Increase (Decrease) In Equity Method Investments [Roll Forward] |  |  |  |
Partnership interest, beginning balance |  |  | 201,727 | 199,103
Investment partnership gains (losses) |  |  | 8,912 | (57,905)
Distributions (net of contributions) |  |  | 4,935 |
Contributions (net of distributions) |  |  |  | 21,924
Changes in proportionate share of Company stock held |  |  | (2,811) | (4,391)
Partnership interest, ending balance | $ 202,893 | $ 158,731 | $ 202,893 | $ 158,731

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