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Investments - Narrative (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]    
Allowance for credit losses on available-for-sale investments $ 0 $ 0
Investments (1,021,778,000) (1,078,257,000)
Long-term Investments    
Schedule of Investments [Line Items]    
Investments $ (3,141,000) $ (8,218,000)
ORIC    
Schedule of Investments [Line Items]    
Stock held in investment (shares) 588,235 588,235