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Note 10 - Reserve for Losses and Loss Adjustment Expenses - Schedule of Average Annual Percentage Payout of Incurred Claims on Other Insurance (Details) - Other Insurance Lines [Member] | Dec. 31, 2025
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Short-Duration Insurance Contracts, Historical Claims Duration [Line Items] |
Payout percentage, year 1 | 12.97%
Payout percentage, year 2 | 15.99%
Payout percentage, year 3 | 16.12%
Payout percentage, year 4 | 26.34%
Payout percentage, year 5 | 2.03%

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