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Note 6 - Investments - Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
US Government Agencies Debt Securities [Member]
Less than 12 months, estimated fair value	$ 2,372	$ 2,417
Less than 12 Months	18	28
Greater than 12 months, estimated fair value	2,567	7,984
Greater than 12 Months	82	190
Estimated fair value	4,939	10,401
Total, debt securities	100	218
US States and Political Subdivisions Debt Securities [Member]
Less than 12 months, estimated fair value	198	331
Less than 12 Months	1	1
Greater than 12 months, estimated fair value	1,314	1,981
Greater than 12 Months	45	72
Estimated fair value	1,512	2,312
Total, debt securities	46	73
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Less than 12 months, estimated fair value	1,402	3,006
Less than 12 Months	11	57
Greater than 12 months, estimated fair value	3,873	5,477
Greater than 12 Months	271	376
Estimated fair value	5,275	8,483
Total, debt securities	282	433
Asset-Backed Securities [Member]
Less than 12 months, estimated fair value	91	254
Less than 12 Months	0	0
Greater than 12 months, estimated fair value	487	756
Greater than 12 Months	16	22
Estimated fair value	578	1,010
Total, debt securities	16	22
Corporate Debt Securities [Member]
Less than 12 months, estimated fair value	523	966
Less than 12 Months	2	10
Greater than 12 months, estimated fair value	6,354	7,274
Greater than 12 Months	280	432
Estimated fair value	6,877	8,240
Total, debt securities	282	442
Fixed Maturities [Member]
Less than 12 months, estimated fair value	4,586	6,974
Less than 12 Months	32	96
Greater than 12 months, estimated fair value	14,595	23,472
Greater than 12 Months	694	1,092
Estimated fair value	19,181	30,446
Total, debt securities	$ 726	$ 1,188

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