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Note 6 - Investments - Fixed Maturities by Contractual Maturity Periods (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Due in one year or less $ 6,429  
Due in one year or less, estimated fair value 6,323  
Due after one year through five years 26,924  
Due after one year through five years, estimated fair value 25,494  
Due after five years through ten years 2,274  
Due after five years through ten years, estimated fair value 2,075  
Due after ten years 3,640  
Due after ten years, estimated fair value 3,265  
Total 39,267 $ 40,127
Total, estimated fair value $ 37,157 $ 37,591