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Investments - Investment Balances (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Investments [Abstract]    
Joint ventures $ 855,131 $ 832,119
Available for sale debt securities 289,307 260,139
Nonmarketable securities 18,389 18,760
Marketable equity securities 207,028 39,535
Total $ 1,369,855 $ 1,150,553