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Federal Income Taxes (Significant components of our deferred tax assets and liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets |  |
Allowance for loan losses | $ 1,724 | $ 1,255
Deferred directors' fees | 1,475 | 1,615
Employee benefit plans | 59 | 77
Core deposit premium and acquisition expenses | 751 | 742
Net unrecognized actuarial loss on pension plan | 729 | 717
Deferred Tax Assets, Derivative Instruments | 11 | 0
Life insurance death benefit payable | 497 | 497
Other | 890 | 771
Total deferred tax assets | 6,136 | 5,674
Deferred tax liabilities |  |
Prepaid pension cost | 290 | 327
Premises and equipment | 2,196 | 1,859
Accretion on securities | 36 | 37
Core deposit premium and acquisition expenses | 910 | 872
Net unrealized gains on available-for-sale securities | 2,777 | 1,247
Deferred Tax Assets, Derivative Instruments | 0 | 14
Other | 956 | 1,157
Total deferred tax liabilities | 7,165 | 5,513
Net deferred tax assets (liabilities) |  | $ 161
Net deferred tax assets (liabilities) | $ (1,029) |

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