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Note 11 - Reinsurance (Details Textual) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2025 USD ($) Reinsurer | Dec. 31, 2024 USD ($) Reinsurer | Dec. 31, 2023 USD ($) Reinsurer | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($)
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Reinsurance, Amount Retained, Per Event | $ 44,900 | $ 27,900 |  |  |  |  |
Reinsurance XOL treaty retention amount retained per event | 1,500 |  |  |  |  |  |
Reinsurance Policy, Excess of Loss Protection Amount | 735,000 |  |  |  |  |  |
Prepaid Reinsurance Premiums | 355,918 | 276,237 |  |  |  |  |
Catastrophe Bond, Face Value |  |  |  | $ 525,000 | $ 420,000 | $ 200,000 | $ 275,000
Ceded Premiums Written | 1,064,230 | 897,111 | $ 731,531 |  |  |  |
Ceded Premiums Earned | 984,549 | 886,682 | 669,808 |  |  |  |
Reinsurance recoverables | 73,542 | 118,365 | 83,181 |  |  |  |
Largest Reinsurer One [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Ceded Premiums Earned | 66,400 | 125,900 | 152,400 |  |  |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | 96,500 | 137,000 |  |  |  |  |
Largest Reinsurer Two [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Ceded Premiums Earned | 64,900 | 67,900 | 65,900 |  |  |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | 51,200 | 26,900 |  |  |  |  |
Largest Reinsurer Three [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Ceded Premiums Earned | 63,100 | 61,700 | $ 47,400 |  |  |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | $ 32,800 | $ 24,400 |  |  |  |  |
Reinsurance Recoverable Including Reinsurance Premium Paid [Member] | Reinsurer Concentration Risk [Member] | Three Largest Reinsurers [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Number of Largest Reinsurers | Reinsurer | 3 | 3 |  |  |  |  |
Concentration Risk, Percentage | 21.90% | 47.70% |  |  |  |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments [Member] | Reinsurer Concentration Risk [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Number of Largest Reinsurers | Reinsurer | 3 | 3 | 3 |  |  |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments [Member] | Reinsurer Concentration Risk [Member] | Three Largest Reinsurers [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Concentration Risk, Percentage | 18.60% | 28.50% | 36.30% |  |  |  |
Earthquake [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Reinsurance, Amount Retained, Per Event | $ 20,000 |  |  |  |  |  |
Reinsurance Policy, Excess of Loss Protection Amount | 3,100,000 |  |  |  |  |  |
U.S. Hurricane [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Reinsurance Policy, Excess of Loss Protection Amount | 100,000 |  |  |  |  |  |
Continental Hurricane [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Reinsurance, Amount Retained, Per Event | 11,000 |  |  |  |  |  |
Catastrophe [Member] |  |  |  |  |  |  |
Reinsurance Retention [Line Items] |  |  |  |  |  |  |
Ceded Premiums Written | $ 64,900 | $ 55,300 | $ 42,700 |  |  |  |

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