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Investments - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Schedule of Investments [Line Items]          
Equity method investments $ 35,433,000   $ 35,433,000   $ 39,075,000
Gains (losses) on equity method investments 2,290,000 $ 2,360,000 7,027,000 $ 6,894,000  
Impairment charge on equity method investments 0 0 0 0  
Equity method investment, amount sold 0 0 0 0  
Investments carried under measurement alternative 3,530,000   3,530,000   192,000
Equity investments carried under measurement alternative, gain 0 0 0 0  
Equity investments carried under measurement alternative, loss 0 0 0 0  
Impairments related to investments 0 0 0 0  
Total assets 5,825,151,000   5,825,151,000   3,591,967,000
Total liabilities 4,683,430,000   4,683,430,000   2,512,728,000
Maximum exposure to loss 2,400,000   2,400,000   1,300,000
Variable interest entity, primary beneficiary          
Schedule of Investments [Line Items]          
Total assets 8,400,000   8,400,000   5,300,000
Total liabilities 1,900,000   1,900,000   $ 1,200,000
Other nonoperating income (expense)          
Schedule of Investments [Line Items]          
Equity investments carried under measurement alternative, gain     $ 600,000 $ 36,600,000  
Equity investments carried under measurement alternative, loss $ 100,000 $ 0