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Federal Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred Tax Assets: |  |
Allowance for loan losses | $ 1,612 | $ 1,444
Other | 540 | 505
Net unrealized loss on available-for-sale securities | 292 | 802
Total deferred tax assets | 2,444 | 2,751
Deferred Tax Liabilities: |  |
Accreted discounts on bonds | 43 | 29
FHLB stock dividends | 491 | 462
Mortgage servicing rights | 586 | 508
Other | 2,678 | 1,751
Total deferred tax liabilities | 3,798 | 2,750
Net Deferred Tax Asset |  | $ 1
Net Deferred Tax (Liability) | $ (1,354) |

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