Note 6 - Investments (Tables)
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9 Months Ended |
Sep. 30, 2026 |
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| Notes Tables |
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| Investment [Table Text Block] |
| (in thousands) | | | September 30, 2026 | | | | December 31, 2025 | |
| Available-for-sale fixed maturities, at fair value (amortized cost of $40,207 and $37,005, respectively) | | $ | 38,936 | | | $ | 36,765 | |
| Limited liability investment, at fair value (a) | | | 3,232 | | | | 3,476 | |
| Limited liability investments (a) | | | 636 | | | | 649 | |
| Investments in private companies, at adjusted cost (a) | | | 575 | | | | 575 | |
| Short-term investments, at cost which approximates fair value | | | 180 | | | | 178 | |
| Total investments | | $ | 43,559 | | | $ | 41,643 | |
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| Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
| (in thousands) | | September 30, 2026 | |
| | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Estimated Fair Value | |
| Fixed maturities: | | | | | | | | | | | | | | | | |
| U.S. government, government agencies and authorities | | $ | 13,983 | | | $ | — | | | $ | 365 | | | $ | 13,618 | |
| States, municipalities and political subdivisions | | | 934 | | | | — | | | | 14 | | | | 920 | |
| Mortgage-backed | | | 11,966 | | | | 2 | | | | 585 | | | | 11,383 | |
| Asset-backed | | | 1,664 | | | | — | | | | 36 | | | | 1,628 | |
| Corporate | | | 11,660 | | | | 2 | | | | 275 | | | | 11,387 | |
| Total fixed maturities | | $ | 40,207 | | | $ | 4 | | | $ | 1,275 | | | $ | 38,936 | |
| (in thousands) | | December 31, 2025 | |
| | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Estimated Fair Value | |
| Fixed maturities: | | | | | | | | | | | | | | | | |
| U.S. government, government agencies and authorities | | $ | 13,441 | | | $ | 97 | | | $ | 47 | | | $ | 13,491 | |
| States, municipalities and political subdivisions | | | 1,788 | | | | 3 | | | | 20 | | | | 1,771 | |
| Mortgage-backed | | | 9,965 | | | | 79 | | | | 226 | | | | 9,818 | |
| Asset-backed | | | 1,365 | | | | 10 | | | | 11 | | | | 1,364 | |
| Corporate | | | 10,446 | | | | 58 | | | | 183 | | | | 10,321 | |
| Total fixed maturities | | $ | 37,005 | | | $ | 247 | | | $ | 487 | | | $ | 36,765 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| (in thousands) | | September 30, 2026 | |
| | | Amortized Cost | | | Estimated Fair Value | |
| Due in one year or less | | $ | 7,637 | | | $ | 7,572 | |
| Due after one year through five years | | | 20,358 | | | | 19,845 | |
| Due after five years through ten years | | | 6,650 | | | | 6,367 | |
| Due after ten years | | | 5,562 | | | | 5,152 | |
| Total | | $ | 40,207 | | | $ | 38,936 | |
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| Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
| (in thousands) | | September 30, 2026 | |
| | | Less than 12 Months | | | Greater than 12 Months | | | Total | |
| | | Estimated Fair Value | | | Unrealized Loss | | | Estimated Fair Value | | | Unrealized Loss | | | Estimated Fair Value | | | Unrealized Loss | |
| Fixed maturities: | | | | | | | | | | | | | | | | | | | | | | | | |
| U.S. government, government agencies and authorities | | $ | 3,142 | | | $ | 51 | | | $ | 10,476 | | | $ | 314 | | | $ | 13,618 | | | $ | 365 | |
| States, municipalities and political subdivisions | | | 578 | | | | 5 | | | | 341 | | | | 9 | | | | 919 | | | | 14 | |
| Mortgage-backed | | | 5,731 | | | | 216 | | | | 5,454 | | | | 369 | | | | 11,185 | | | | 585 | |
| Asset-backed | | | 1,222 | | | | 26 | | | | 132 | | | | 10 | | | | 1,354 | | | | 36 | |
| Corporate | | | 5,498 | | | | 124 | | | | 5,140 | | | | 151 | | | | 10,638 | | | | 275 | |
| Total fixed maturities | | $ | 16,171 | | | $ | 422 | | | $ | 21,543 | | | $ | 853 | | | $ | 37,714 | | | $ | 1,275 | |
| (in thousands) | | December 31, 2025 | |
| | | Less than 12 Months | | | Greater than 12 Months | | | Total | |
| | | Estimated Fair Value | | | Unrealized Loss | | | Estimated Fair Value | | | Unrealized Loss | | | Estimated Fair Value | | | Unrealized Loss | |
| Fixed maturities: | | | | | | | | | | | | | | | | | | | | | | | | |
| U.S. government, government agencies and authorities | | $ | 2,477 | | | $ | 21 | | | $ | 2,370 | | | $ | 26 | | | $ | 4,847 | | | $ | 47 | |
| States, municipalities and political subdivisions | | | 300 | | | | — | | | | 1,088 | | | | 20 | | | | 1,388 | | | | 20 | |
| Mortgage-backed | | | 336 | | | | 1 | | | | 3,433 | | | | 225 | | | | 3,769 | | | | 226 | |
| Asset-backed | | | — | | | | — | | | | 417 | | | | 11 | | | | 417 | | | | 11 | |
| Corporate | | | 408 | | | | — | | | | 6,113 | | | | 183 | | | | 6,521 | | | | 183 | |
| Total fixed maturities | | $ | 3,521 | | | $ | 22 | | | $ | 13,421 | | | $ | 465 | | | $ | 16,942 | | | $ | 487 | |
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| Investment Income [Table Text Block] |
| (in thousands) | | Three months ended September 30, | | | Nine months ended September 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| Net investment income | | $ | 535 | | | $ | 431 | | | $ | 1,333 | | | $ | 1,221 | |
| Net realized (losses) gains | | | (257 | ) | | | (5 | ) | | | 1,707 | | | | 52 | |
| (Loss) gain on change in fair value of limited liability investment, at fair value | | | (618 | ) | | | 111 | | | | 51 | | | | 289 | |
| Interest and investment (loss) income, net | | $ | (340 | ) | | $ | 537 | | | $ | 3,091 | | | $ | 1,562 | |
| (in thousands) | | Three months ended September 30, | | | Nine months ended September 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| Investment income: | | | | | | | | | | | | | | | | |
| Interest from fixed maturities | | $ | 395 | | | $ | 357 | | | $ | 1,115 | | | $ | 1,044 | |
| Dividends | | | 10 | | | | 10 | | | | 30 | | | | 30 | |
| Loss from limited liability investments | | | (1 | ) | | | (1 | ) | | | (13 | ) | | | (1 | ) |
| Other | | | 155 | | | | 108 | | | | 294 | | | | 251 | |
| Gross investment income | | | 559 | | | | 474 | | | | 1,426 | | | | 1,324 | |
| Investment expenses | | | (24 | ) | | | (43 | ) | | | (93 | ) | | | (103 | ) |
| Net investment income | | $ | 535 | | | $ | 431 | | | $ | 1,333 | | | $ | 1,221 | |
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| Realized Gain (Loss) on Investments [Table Text Block] |
| (in thousands) | | Three months ended September 30, | | | Nine months ended September 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| Available-for-sale fixed maturities: | | | | | | | | | | | | | | | | |
| Gross realized gains | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Gross realized losses | | | — | | | | (9 | ) | | | — | | | | (85 | ) |
| Net realized losses on available-for-sale fixed maturities | | | — | | | | (9 | ) | | | — | | | | (85 | ) |
| Limited liability investment, at fair value | | | (266 | ) | | | 34 | | | | 1,064 | | | | 129 | |
| Investments in private companies | | | 9 | | | | (30 | ) | | | 643 | | | | 8 | |
| Net realized (losses) gains | | $ | (257 | ) | | $ | (5 | ) | | $ | 1,707 | | | $ | 52 | |
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