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Note 6 - Investments - Fixed Maturities by Contractual Maturity Periods (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Due in one year or less	$ 7,264
Due in one year or less, estimated fair value	7,220
Due after one year through five years	24,396
Due after one year through five years, estimated fair value	23,986
Due after five years through ten years	2,204
Due after five years through ten years, estimated fair value	2,170
Due after ten years	3,859
Due after ten years, estimated fair value	3,580
Total	37,723	$ 38,117
Total, estimated fair value	$ 36,956	$ 36,963

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