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Note 6 - Investments - Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Total $ 38,069 $ 38,117
Gross Unrealized Gains 187 34
Gross Unrealized Losses 726 1,188
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) 37,530 36,963
US Government Agencies Debt Securities [Member]    
Total 13,737 13,561
Gross Unrealized Gains 78 11
Gross Unrealized Losses 100 218
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) 13,715 13,354
US States and Political Subdivisions Debt Securities [Member]    
Total 2,291 2,846
Gross Unrealized Gains 4 2
Gross Unrealized Losses 46 73
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) 2,249 2,775
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Total 10,482 10,309
Gross Unrealized Gains 54 10
Gross Unrealized Losses 282 433
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) 10,254 9,886
Asset-Backed Securities [Member]    
Total 1,463 1,346
Gross Unrealized Gains 8 2
Gross Unrealized Losses 16 22
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) 1,455 1,326
Corporate Debt Securities [Member]    
Total 10,096 10,055
Gross Unrealized Gains 43 9
Gross Unrealized Losses 282 442
Fixed maturities, at fair value (amortized cost of $38,069 and $38,117, respectively) $ 9,857 $ 9,622