Note 2 - Debt Securities (Details Textual) |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2018
USD ($)
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Dec. 31, 2017
USD ($)
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Dec. 31, 2016
USD ($)
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|
| Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total | $ 0 | $ 0 | $ 0 |
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | 373 | ||
| Available for Sale Securities Debt Securities, Number of Positions | 729 | ||
| Carrying Value of Investment Securities Pledged | $ 281,900,000 | 284,200,000 | |
| Common Stock [Member] | |||
| Restricted Investments | 100,000 | 100,000 | |
| First National Bankers Bank Stock [Member] | |||
| Restricted Investments | 400,000 | 400,000 | |
| CRA-Qualified Mutual Fund [Member] | |||
| Restricted Investments | 500,000 | $ 500,000 | |
| Investment in Common Stock of Bank Holding Company [Member] | |||
| Equity Securities, FV-NI, Realized Gain (Loss), Total | $ 175,000 | ||
| X | ||||||||||
- Definition The number of positions in available for sale debt securities held by the company. No definition available.
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| X | ||||||||||
- Definition The carrying value of investment securities pledged to secure public funds on deposits and for other purposes as required by law. No definition available.
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| X | ||||||||||
- Definition Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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| X | ||||||||||
- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. No definition available.
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| X | ||||||||||
- Definition Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. No definition available.
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