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Investments Investment Balances (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Investments [Abstract]    
Joint ventures $ 593,344 $ 604,964
Available for sale debt securities 246,517 0
Nonmarketable securities 20,660 14,171
Marketable equity securities 37,187 37,109
Total $ 897,708 $ 656,244