Note 1 - Organization, Basis of Presentation and Impact of Recently Issued Accounting Pronouncements (Details Textual) |
6 Months Ended | ||
|---|---|---|---|
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Jun. 30, 2026
$ / shares
shares
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Dec. 31, 2025
$ / shares
shares
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Oct. 12, 2021
$ / shares
shares
|
|
| Common Stock, Shares Authorized (in shares) | 15,000,000 | 15,000,000 | 15,000,000 |
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 4 | $ 4 | $ 4 |
| Preferred Stock, Shares Authorized (in shares) | 2,000,000 | 2,000,000 | 2,000,000 |
| Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 1 | $ 1 | $ 1 |
| Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 28,750 | 28,750 | |
| Number of Reportable Segments | 2 | ||
| Depositary Shares, Fractional Interest in Preferred Stock, Denominator | 40 | ||
| Series A Fixed-rate Non-cumulative Perpetual Preferred Stock [Member] | |||
| Preferred Stock, Dividend Rate, Percentage | 7.50% |
| X | ||||||||||
- Definition The denominator of the fractional interest in preferred stock for depositary shares. No definition available.
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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The percentage rate used to calculate dividend payments on preferred stock. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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