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Investments - Contractual Maturities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]    
Less than 1 year $ 136,246  
1 year to 2 years 110,869  
2 years to 3 years 8,297  
3 years to 4 years 0  
Greater than 4 years 0  
Total $ 255,412 $ 484,252