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Note 21 - Business Segments (Details Textual) | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Number of Operating Segments |  | 2 |  |
Number of Bank Branches |  | 27 |  |
Loans Receivable, Fair Value Disclosure |  | $ 15,088,000 | $ 14,035,000 |
Noninterest Expense | [1] | 93,747,000 | 79,183,000 | $ 76,242,000
Home Lending [Member] |  |  |  |
Noninterest Expense | [1] | 19,980,000 | 19,460,000 | 19,685,000
Home Lending [Member] | Allocated Overhead Expense [Member] |  |  |  |
Noninterest Expense |  | 6,100,000 | 6,200,000 | 7,300,000
Residential Mortgage [Member] |  |  |  |
Increase (Decrease) in Finance Receivables |  | 447,000 | (1,700,000) | (29,000)
Loans Receivable, Fair Value Disclosure |  | $ 15,100,000 | $ 14,000,000 | $ 17,800,000
[1] | Noninterest expense includes allocated overhead expense from general corporate activities. Allocation is determined based on a combination of segment assets and FTEs. For the years ended December 31, 2023, 2022, and 2021, the Home Lending segment included allocated overhead expenses of $6.1 million, $6.2 million, and $7.3 million, respectively.

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- Definition Represents the number bank branches. + References No definition available. + Details
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- Definition The increase (decrease) during the reporting period in outstanding loans including accrued interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
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- Definition Total aggregate amount of all noninterest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-18 + Details
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