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Note 5 - Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Securities available for sale, at fair value | $ 651,047 | $ 656,852
Fair Value, Inputs, Level 1 [Member] |  |
Securities available for sale, at fair value | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Securities available for sale, at fair value | 651,047 | 656,852
Fair Value, Inputs, Level 3 [Member] |  |
Securities available for sale, at fair value | 0 | 0
Reported Value Measurement [Member] |  |
Cash and due from banks | 11,695 | 12,403
Interest-bearing deposits | 42,966 | 59,026
Securities available for sale, at fair value | 651,047 | 656,852
Restricted securities | 929 | 941
Loans, net | 846,315 | 844,519
Accrued interest receivable | 6,007 | 6,001
Bank-owned life insurance | 43,551 | 43,312
Interest rate loan contracts | 2 |
Deposits | 1,511,452 | 1,542,725
Accrued interest payable | 314 | 106
Interest rate loan contracts | 2 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and due from banks | 11,695 | 12,403
Interest-bearing deposits | 42,966 | 59,026
Securities available for sale, at fair value | 0 | 0
Restricted securities | 0 | 0
Loans, net | 0 | 0
Accrued interest receivable | 0 | 0
Bank-owned life insurance | 0 | 0
Interest rate loan contracts | 0 |
Deposits | 0 | 0
Accrued interest payable | 0 | 0
Interest rate loan contracts | 0 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and due from banks | 0 | 0
Interest-bearing deposits | 0 | 0
Securities available for sale, at fair value | 651,047 | 656,852
Restricted securities | 929 | 941
Loans, net | 0 | 0
Accrued interest receivable | 6,007 | 6,001
Bank-owned life insurance | 43,551 | 43,312
Interest rate loan contracts | 0 |
Deposits | 1,385,881 | 1,475,096
Accrued interest payable | 314 | 106
Interest rate loan contracts | 0 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and due from banks | 0 | 0
Interest-bearing deposits | 0 | 0
Securities available for sale, at fair value | 0 | 0
Restricted securities | 0 | 0
Loans, net | 803,330 | 781,749
Accrued interest receivable | 0 | 0
Bank-owned life insurance | 0 | 0
Interest rate loan contracts | 2 |
Deposits | 125,931 | 67,542
Accrued interest payable | 0 | $ 0
Interest rate loan contracts | $ 2 |

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of accrued interest receivable. + References No definition available. + Details
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- Definition For banks and other depository institutions: Includes fair value of cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. + References No definition available. + Details
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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable). Fair value of interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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