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Note 1 - Basis of Presentation and Critical Accounting Policies (Details Textual) - USD ($) |  |  | 1 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 18, 2015 | Jan. 29, 2015 | Dec. 31, 2022 | Apr. 30, 2021 | Sep. 30, 2024 | Dec. 31, 2023
Stock Issued During Period, Shares, New Issues (in shares) |  | 13,100,360 |  |  |  |
Proceeds from Issuance of Common Stock, Net |  | $ 117,600,000 |  |  |  |
Proceeds from Issuance Initial Public Offering |  | 58,400,000 |  |  |  |
Employee Stock Ownership Plan (ESOP), Issued, Percentage of Common Stock Issued | 8.00% |  |  |  |  |
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in shares) | 1,048,029 |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss |  |  |  |  | $ 1,714,416,000 | $ 1,642,518,000
Quil Ventures, Inc. [Member] |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  | 5.00% |  |  |
Investments |  |  | $ 225,000 |  |  | 225,000
Commitment Receivable |  |  | $ 1,500,000 |  |  | $ 1,500,000
First Federal Community Foundation [Member] |  |  |  |  |  |
Payments for Contributions to Charity |  | $ 400,000 |  |  |  |
Quin Ventures, Inc [Member] | Joint Venture Agreement [Member] | Partially Unfunded Loan Commitment [Member] |  |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss |  |  |  | $ 8,000,000 |  |
POM Peace of Mind, Inc [Member] | Joint Venture Agreement [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  | 29,719 |  |
Stock Issued During Period, Value, New Issues |  |  |  | $ 500,000 |  |
Stock Returned During Period, Shares (in shares) |  |  | 29,719 |  |  |
Contribution of Nonmonetary Assets to Charitable Organization [Member] | First Federal Community Foundation [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 933,360 |  |  |  |
IPO [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 12,167,000 |  |  |  |
Shares Issued, Price Per Share (in dollars per share) |  | $ 10 |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 121,700,000 |  |  |  |

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