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Investments, Aggregated by Type and Industry (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Investments aggregated by type and industry [Abstract]    
Estimated fair value $ 218,038 $ 208,729
Allowance for credit losses 0 0
Amortized cost total 241,342 236,766
Estimated fair value 9,181 11,562
Cost 4,904 4,907
Amortized cost of bonds on deposit with insurance regulatory authorities 11,576 12,333
Bonds Pledged as Collateral [Member] | FHLB Advances [Member]    
Investments aggregated by type and industry [Abstract]    
Amortized cost pledged as collateral to FHLB 7,761 7,221
Fixed Maturities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 218,038 208,729
Gross unrealized gains 1,057 753
Gross unrealized losses 24,361 28,790
Allowance for credit losses 0  
Amortized cost total 241,342 236,766
U.S. Treasury Securities and Obligations of U.S. Government Agencies and Authorities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 49,729 44,412
Gross unrealized gains 25 5
Gross unrealized losses 5,324 5,926
Allowance for credit losses 0  
Amortized cost total 55,028 50,333
Obligations of States and Political Subdivisions [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 9,545 9,187
Gross unrealized gains 30 4
Gross unrealized losses 1,367 1,702
Allowance for credit losses 0  
Amortized cost total 10,882 10,885
Corporate Securities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 158,532 154,907
Gross unrealized gains 963 713
Gross unrealized losses 17,670 21,162
Allowance for credit losses 0  
Amortized cost total 175,239 175,356
Corporate Securities [Member] | Utilities and Telecom [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 22,747 22,090
Gross unrealized gains 230 120
Gross unrealized losses 2,744 3,299
Allowance for credit losses 0  
Amortized cost total 25,261 25,269
Corporate Securities [Member] | Financial Services [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 59,765 59,054
Gross unrealized gains 456 397
Gross unrealized losses 6,422 7,085
Allowance for credit losses 0  
Amortized cost total 65,731 65,742
Corporate Securities [Member] | Other Business - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 32,176 31,058
Gross unrealized gains 225 161
Gross unrealized losses 3,620 4,689
Allowance for credit losses 0  
Amortized cost total 35,571 35,586
Corporate Securities [Member] | Other Consumer - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 43,844 42,705
Gross unrealized gains 52 35
Gross unrealized losses 4,884 6,089
Allowance for credit losses 0  
Amortized cost total 48,676 48,759
Redeemable Preferred Stocks [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 232 223
Gross unrealized gains 39 31
Gross unrealized losses 0 0
Allowance for credit losses 0  
Amortized cost total 193  
Redeemable Preferred Stocks [Member] | Other Consumer - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 232 223
Gross unrealized gains 39 31
Gross unrealized losses 0 0
Allowance for credit losses 0  
Amortized cost total 193 192
Equity Securities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 9,181 11,562
Gross unrealized gains 4,277 6,655
Gross unrealized losses 0 0
Cost 4,904 4,907
Common and Non-redeemable Preferred Stocks [Member] | Financial Services [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 768 790
Gross unrealized gains 497 516
Gross unrealized losses 0 0
Cost 271 274
Common and Non-redeemable Preferred Stocks [Member] | Other Business - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 8,413 10,772
Gross unrealized gains 3,780 6,139
Gross unrealized losses 0 0
Cost $ 4,633 $ 4,633