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Variable Interest Entities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Variable Interest Entity [Line Items]      
Restricted cash and cash equivalents [1] $ 2,635 $ 12,715 $ 2,635
Variable Interest Entity, Primary Beneficiary      
Variable Interest Entity [Line Items]      
Restricted cash and cash equivalents $ 0 $ 10,100  
[1] See “—Note 5 (Insurance Operations),” for a discussion of the nature of the restrictions for restricted cash and cash equivalents and “—Note 18 (Variable Interest Entities),” for a discussion of restricted cash held in a trust account.