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Note 14 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 4,294 | $ 3,114
State operating and alternative minimum tax carryforward | 503 | 469
Fair value adjustments from acquisitions | 164 | 214
Accrued vacation | 272 | 224
Off balance sheet reserve | 149 | 136
Other deferred tax assets | 433 | 473
Total deferred tax assets | 5,815 | 4,630
Deferred tax liabilities: |  |
Net unrealized gains on securities available-for-sale | (5,341) | (1,372)
Goodwill and other intangible assets | (1,058) | (1,029)
Bank premises and equipment | (609) | (661)
Deferred loan costs | (62) | 0
Other deferred tax liabilities | (250) | (191)
Total deferred tax liabilities | (7,320) | (3,253)
Valuation allowance | (226) | (226)
Net deferred tax liability | $ (1,731) |
Net deferred tax asset |  | $ 1,151

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