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Note 7 - Investments - Unrealized Loss Position (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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US Government Agencies Debt Securities [Member] |  |
Less than 12 months, estimated fair value | $ 2,417 | $ 3,237
Less than 12 Months | 28 | 46
Greater than 12 months, estimated fair value | 7,984 | 7,940
Greater than 12 Months | 190 | 349
Estimated fair value | 10,401 | 11,177
Total, debt securities | 218 | 395
US States and Political Subdivisions Debt Securities [Member] |  |
Less than 12 months, estimated fair value | 331 | 0
Less than 12 Months | 1 | 0
Greater than 12 months, estimated fair value | 1,981 | 1,705
Greater than 12 Months | 72 | 105
Estimated fair value | 2,312 | 1,705
Total, debt securities | 73 | 105
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |  |
Less than 12 months, estimated fair value | 3,006 | 737
Less than 12 Months | 57 | 11
Greater than 12 months, estimated fair value | 5,477 | 6,067
Greater than 12 Months | 376 | 483
Estimated fair value | 8,483 | 6,804
Total, debt securities | 433 | 494
Asset-Backed Securities [Member] |  |
Less than 12 months, estimated fair value | 254 | 0
Less than 12 Months | 0 | 0
Greater than 12 months, estimated fair value | 756 | 1,050
Greater than 12 Months | 22 | 45
Estimated fair value | 1,010 | 1,050
Total, debt securities | 22 | 45
Corporate Debt Securities [Member] |  |
Less than 12 months, estimated fair value | 966 | 937
Less than 12 Months | 10 | 11
Greater than 12 months, estimated fair value | 7,274 | 8,013
Greater than 12 Months | 432 | 637
Estimated fair value | 8,240 | 8,950
Total, debt securities | 442 | 648
Fixed Maturities [Member] |  |
Less than 12 months, estimated fair value | 6,974 | 4,911
Less than 12 Months | 96 | 68
Greater than 12 months, estimated fair value | 23,472 | 24,775
Greater than 12 Months | 1,092 | 1,619
Estimated fair value | 30,446 | 29,686
Total, debt securities | $ 1,188 | $ 1,687

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
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