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Note 1 - Basis of Presentation and Significant Accounting Policies - Impact of ASU 2016-13 (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jan. 01, 2021
--- | --- | --- | --- | ---
Securities available for sale, fair value |  | $ 280,961 | $ 300,349 |  |  | $ 83,358 | [1]
Loans |  | 2,572,298 | 2,400,197 |  |  |  |
Allowance for credit losses on loans |  | (36,189) | (30,556) | [2] | $ (27,858) | (26,182) | [3]
Deferred Tax Assets, Net of Valuation Allowance, Total |  | 25,304 | 21,874 |  |  | 17,493 | [4]
Accrued interest receivable - loans |  | 10,881 | 9,279 | [2] |  | 9,052 | [5]
Allowance for credit losses on off-balance sheet credit exposures |  | 746 | 1,196 |  | $ 678 | 66 | [6]
Retained Earnings (Accumulated Deficit), Ending Balance |  | $ 319,902 | $ 292,971 | [2] |  | 237,585 | [7]
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans |  |  |  |  |  | 2,146,972 |
Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans | [5] |  |  |  |  | 39,660 |
Allowance for credit losses on loans |  |  |  |  |  | (5,880) |
Accounting Standards Update 2016-13 [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Allowance for credit losses on loans |  |  |  |  |  | (57) |
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |  |  |  |  |
Securities available for sale, fair value | [1] |  |  |  |  | 83,358 |
Allowance for credit losses on loans | [3] |  |  |  |  | (39,289) |
Deferred Tax Assets, Net of Valuation Allowance, Total | [4] |  |  |  |  | 19,306 |
Accrued interest receivable - loans | [5] |  |  |  |  | 9,109 |
Allowance for credit losses on off-balance sheet credit exposures | [6] |  |  |  |  | 575 |
Retained Earnings (Accumulated Deficit), Ending Balance | [7] |  |  |  |  | 231,714 |
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans |  |  |  |  |  | 2,146,972 |
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans | [5] |  |  |  |  | 45,535 |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |  |
Securities available for sale, fair value | [1] |  |  |  |  | 0 |
Allowance for credit losses on loans | [3] |  |  |  |  | (13,107) |
Deferred Tax Assets, Net of Valuation Allowance, Total | [4] |  |  |  |  | 1,813 |
Accrued interest receivable - loans | [5] |  |  |  |  | 57 |
Allowance for credit losses on off-balance sheet credit exposures | [6] |  |  |  |  | 509 |
Retained Earnings (Accumulated Deficit), Ending Balance | [7] |  |  |  |  | (5,870) |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans |  |  |  |  |  | 0 |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |
Loans | [5] |  |  |  |  | $ 5,875 |
[1] | Per our analysis no ACL was necessary for investment securities available for sale.
[2] | Derived from audited financial statements
[3] | Calculated adjustment to the ACL related to the adoption of ASU 2016-13. Includes additional reserve related to purchased deteriorated loans of $5.88 million.
[4] | Effect of deferred tax assets related to the adjustment to the ACL form the adoption of ASU 2016-13 using a 23.37% tax rate.
[5] | Accrued interest receivable from acquired credit impaired loans of $57 thousand was reclassed to other assets and was offset by the reclass of the grossed up credit discount on acquired credit impaired loans of $57 thousand that was moved to the ACL for the purchased credit deteriorated loans.
[6] | Adjustment to the reserve for unfunded commitments related to the adoption of ASU 2016-13.
[7] | Net adjustment to retained earnings related to the adoption of ASU 2016-13.

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