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Fair Value Measurements - Investments in Equity Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Fair Value Disclosures [Abstract]    
Cost $ 111,190 $ 112,420
Gross Unrealized Gains 0 3,954
Gross Unrealized Losses (1,329) 0
Estimated Fair Value $ 109,861 $ 116,374