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Note 7 - Investments - Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Total $ 38,117 $ 38,107
Gross Unrealized Gains 34 53
Gross Unrealized Losses 1,188 1,687
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) 36,963 36,473
US Government Agencies Debt Securities [Member]    
Total 13,561 13,384
Gross Unrealized Gains 11 8
Gross Unrealized Losses 218 395
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) 13,354 12,997
US States and Political Subdivisions Debt Securities [Member]    
Total 2,846 2,885
Gross Unrealized Gains 2 3
Gross Unrealized Losses 73 105
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) 2,775 2,783
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Total 10,309 9,724
Gross Unrealized Gains 10 23
Gross Unrealized Losses 433 494
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) 9,886 9,253
Asset-Backed Securities [Member]    
Total 1,346 1,254
Gross Unrealized Gains 2 1
Gross Unrealized Losses 22 45
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) 1,326 1,210
Corporate Debt Securities [Member]    
Total 10,055 10,860
Gross Unrealized Gains 9 18
Gross Unrealized Losses 442 648
Fixed maturities, at fair value (amortized cost of $38,117 and $38,107, respectively) $ 9,622 $ 10,230