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Federal Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred Tax Assets: |  |
Allowance for loan losses | $ 1,444 | $ 1,464
Other | 505 | 399
Net unrealized loss on available-for-sale securities | 802 | 581
Total deferred tax assets | 2,751 | 2,444
Deferred Tax Liabilities: |  |
Accreted discounts on bonds | 29 | 55
FHLB stock dividends | 462 | 462
Mortgage servicing rights | 508 | 490
Other | 1,751 | 1,185
Total deferred tax liabilities | 2,750 | 2,192
Net Deferred Tax Asset | $ 1 | $ 252

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