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Investments - Restricted Cash (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Restricted Cash and Cash Equivalents Items    
Assets Held-in-trust $ 43,064 $ 61,142
Regulatory Assets 1,038 936
Restricted Cash 44,102 62,078
Assets Held by Insurance Regulators $ 4,019 $ 4,023