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Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 4,146 | $ 4,294
State operating and alternative minimum tax carryforward | 761 | 729
Fair value adjustments from acquisitions | 116 | 164
Accrued vacation | 280 | 272
Off balance sheet reserve | 144 | 149
Other deferred tax assets | 230 | 207
Total deferred tax assets | 5,677 | 5,815
Deferred tax liabilities: |  |
Net unrealized gains on securities available-for-sale | (955) | (5,341)
Goodwill and other intangible assets | (1,135) | (1,058)
Bank premises and equipment | (584) | (609)
Deferred loan costs | (145) | (62)
Other deferred tax liabilities | (314) | (250)
Total deferred tax liabilities | (3,133) | (7,320)
Valuation allowance | (622) | (226)
Net deferred tax asset | $ 1,922 |
Net deferred tax liability |  | $ (1,731)

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