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Investments Investment Balances (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Investments [Abstract]    
Joint ventures $ 832,119 $ 607,644
Available for sale debt securities 260,139 246,517
Nonmarketable securities 18,760 20,660
Marketable equity securities 39,535 37,187
Total $ 1,150,553 $ 912,008