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Note 10 - Reserve for Losses and Loss Adjustment Expenses - Schedule of Average Annual Percentage Payout of Incurred Claims on Homeowners' Insurance (Details) - Homeowners Insurance Product Line [Member] | Dec. 31, 2025 | [1]
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Short-Duration Insurance Contracts, Historical Claims Duration [Line Items] |
Payout percentage, year 1 | 31.90%
Payout percentage, year 2 | 7.10%
Payout percentage, year 3 | 3.66%
Payout percentage, year 4 | 1.11%
Payout percentage, year 5 | 0.44%
Payout percentage, year 6 | 3.10%
Payout percentage, year 7 | (6.96%)
Payout percentage, year 8 | 0.30%
Payout percentage, year 9 | (0.46%)
Payout percentage, year 10 | (0.66%)
[1] | Negative payout percentages are due to timing of reinsurance payments, allocations of reinsurance between different lines of business based on actual results, and allocation of reinsurance to different periods for reinsurance treaties in effect for multiple periods. These are primarily associated with larger recoveries from catastrophe events in earlier years of operation.

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