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Note 6 - Investments - Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Total $ 37,903 $ 38,107
Gross Unrealized Gains 9 53
Gross Unrealized Losses 1,638 1,687
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) 36,274 36,473
US Government Agencies Debt Securities [Member]    
Total 13,601 13,384
Gross Unrealized Gains 0 8
Gross Unrealized Losses 365 395
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) 13,236 12,997
US States and Political Subdivisions Debt Securities [Member]    
Total 2,890 2,885
Gross Unrealized Gains 0 3
Gross Unrealized Losses 110 105
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) 2,780 2,783
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Total 9,662 9,724
Gross Unrealized Gains 6 23
Gross Unrealized Losses 502 494
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) 9,166 9,253
Asset-Backed Securities [Member]    
Total 1,400 1,254
Gross Unrealized Gains 0 1
Gross Unrealized Losses 37 45
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) 1,363 1,210
Corporate Debt Securities [Member]    
Total 10,350 10,860
Gross Unrealized Gains 3 18
Gross Unrealized Losses 624 648
Fixed maturities, at fair value (amortized cost of $37,903 and $38,107, respectively) $ 9,729 $ 10,230