Investments (Schedule of Investments Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loan on real estate, Allowance for credit losses	$ (1,493)	$ (2,709)
Mortgage loans on real estate, held for investment	352,908		$ 227,047
1-4 Family
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	56,335		59,579
Hospitality
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	14,144		12,902
Land
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	77,961		62,119
Multifamily(5+)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	58,711		34,072
Retail Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	45,681		22,119
Other.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage loans on real estate, before allowance for credit losses	$ 101,569		$ 36,256