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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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