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Investments, Aggregated by Type and Industry (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Investments aggregated by type and industry [Abstract]    
Estimated fair value $ 240,038 $ 260,986
Amortized cost total 239,452 238,597
Estimated fair value 21,316 19,124
Cost 4,906 4,907
Amortized cost of bonds on deposit with insurance regulatory authorities 10,879 11,169
Amortized cost pledged as collateral to FHLB 4,762 5,371
Fixed Maturities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 240,038 260,986
Gross unrealized gains 6,229 23,106
Gross unrealized losses 5,643 717
Amortized cost total 239,452 238,597
U.S. Treasury Securities and Obligations of U.S. Government Agencies and Authorities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 47,852 50,298
Gross unrealized gains 172 763
Gross unrealized losses 2,098 416
Amortized cost total 49,778 49,951
Obligations of States and Political Subdivisions [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 11,058 11,644
Gross unrealized gains 228 749
Gross unrealized losses 63 0
Amortized cost total 10,893 10,895
Corporate Securities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 180,885 198,794
Gross unrealized gains 5,779 21,536
Gross unrealized losses 3,482 301
Amortized cost total 178,588 177,559
Corporate Securities [Member] | Utilities and Telecom [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 27,051 29,717
Gross unrealized gains 955 2,961
Gross unrealized losses 695 44
Amortized cost total 26,791 26,800
Corporate Securities [Member] | Financial Services [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 65,895 70,921
Gross unrealized gains 1,868 6,759
Gross unrealized losses 1,250 48
Amortized cost total 65,277 64,210
Corporate Securities [Member] | Other Business - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 36,107 40,216
Gross unrealized gains 1,255 4,631
Gross unrealized losses 823 106
Amortized cost total 35,675 35,691
Corporate Securities [Member] | Other Consumer - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 51,832 57,940
Gross unrealized gains 1,701 7,185
Gross unrealized losses 714 103
Amortized cost total 50,845 50,858
Redeemable Preferred Stocks [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 243 250
Gross unrealized gains 50 58
Gross unrealized losses 0 0
Amortized cost total 193 192
Redeemable Preferred Stocks [Member] | Other Consumer - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 243 250
Gross unrealized gains 50 58
Gross unrealized losses 0 0
Amortized cost total 193 192
Equity Securities [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 21,316 19,124
Gross unrealized gains 16,410 14,217
Gross unrealized losses 0 0
Cost 4,906 4,907
Common and Non-redeemable Preferred Stocks [Member] | Financial Services [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 878 799
Gross unrealized gains 605 525
Gross unrealized losses 0 0
Cost 273 274
Common and Non-redeemable Preferred Stocks [Member] | Other Business - Diversified [Member]    
Investments aggregated by type and industry [Abstract]    
Estimated fair value 20,438 18,325
Gross unrealized gains 15,805 13,692
Gross unrealized losses 0 0
Cost $ 4,633 $ 4,633