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Note 2 - Mergers/Acquisitions/Sales (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2022 USD ($) item $ / shares shares | Mar. 31, 2022 USD ($) $ / shares | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | $ 144,085 |
Prepaid of FHLB advances |  |  |  | 16,000 |
Business acquisition related costs |  |  |  | 3,715 | $ 624
Premises and equipment, net |  |  |  | 16,257 |
Proceeds from sales of securities |  |  | $ 30,568 | 111,375 | $ 23,874
Core deposit intangible |  |  |  | 10,264 |
Guaranty Federal Bancshares, Inc |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination consideration in cash (per share) | $ / shares | $ 30.50 |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares | shares | 0.58775 |  |  |  |
Business combination mixed consideration in cash (per share) | $ / shares | $ 6.10 |  |  |  |
Business combination shares issuable mixed consideration | shares | 0.4702 |  |  |  |
Business acquisition, share price | $ / shares |  | $ 56.59 |  |  |
Business combination, stock consideration |  | $ 117,200 |  |  |
Business Combination, Consideration Transferred | $ 144,085 | $ 26,900 |  |  |
Prepaid of FHLB advances | 16,000 |  |  |  |
Business acquisition related costs |  |  |  | 3,700 |
Post-acquisition, compensation, transition and integration costs |  |  |  | $ 5,500 |
Premises and equipment, net | 16,257 |  |  |  |
Accretable discount of non-PCD loans | 12,000 |  |  |  |
Provision for non-PCD loans acquired. | 11,000 |  |  |  |
Proceeds from sales of securities | $ 111,400 |  |  |  |
Number of branch locations acquired | item | 16 |  |  |  |
Useful life | 39 years |  |  |  |
Core deposit intangible | $ 10,264 |  |  |  |
Estimated useful life of deposits | 10 years |  |  |  |

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- Definition Decreases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan due to the acquisition of similar loans accounted for as debt securities during the period. This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479405/805-10-25-23 + Details
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