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Investments Equity Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities $ 11,590 $ 14,844
Equity Funds [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 2,615 3,571
Bond Mutual Funds [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 4,337 5,060
Common Stock [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 857 990
Nonredeemable Preferred Stock [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 8 161
Nonredeemable Preferred Stock Fund    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities $ 3,773 $ 5,062