Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | $ 714,853,000 | $ 982,664,000 | |
| Debt Securities, Held-to-Maturity, Allowance for Credit Loss | 0 | 0 | |
| Goodwill | $ 13,615,000 | 13,615,000 | |
| Number of Reporting Units | 1 | ||
| Advertising Expense | $ 951,000 | $ 768,000 | $ 447,000 |
| Metro Bancshares, Inc [Member] | |||
| Goodwill | $ 13,600,000 | ||
| Minimum [Member] | |||
| Property, Plant and Equipment, Useful Life | 3 years | ||
| Lessee, Operating Lease, Renewal Term | 1 year | ||
| Minimum [Member] | Performance Shares [Member] | |||
| Property, Plant and Equipment, Useful Life | 0.00% | ||
| Maximum [Member] | |||
| Property, Plant and Equipment, Useful Life | 39 years 6 months | ||
| Lessee, Operating Lease, Renewal Term | 5 years | ||
| Maximum [Member] | Performance Shares [Member] | |||
| Property, Plant and Equipment, Useful Life | 150.00% | ||
| X | ||||||||||
- Definition The percentage of shares vested upon certain performance metrics under the share based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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| X | ||||||||||
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. No definition available.
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| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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