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Note 10 - Reserve for Losses and Loss Adjustment Expenses - Schedule of Average Annual Percentage Payout of Incurred Claims on Special Property Insurance (Details) - Special Property Product Line [Member]	Dec. 31, 2025
Short-Duration Insurance Contracts, Historical Claims Duration [Line Items]
Payout percentage, year 1	5.14%
Payout percentage, year 2	9.86%
Payout percentage, year 3	25.85%
Payout percentage, year 4	16.54%
Payout percentage, year 5	19.37%

X

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Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.

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Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.

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Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.

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Percentage of average annual payout, after reinsurance, in the third year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.

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Percentage of average annual payout, after reinsurance, in the second year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.

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