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Federal Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred Tax Assets:    
Allowance for loan losses $ 2,080 $ 2,030
Other 528 416
Total deferred tax assets 2,608 2,446
Deferred Tax Liabilities:    
Accreted discounts on bonds 100 83
FHLB stock dividends 745 746
Mortgage servicing rights 706 696
Other 1,389 1,160
Net unrealized gain on available-for-sale securities 109 229
Total deferred tax liabilities 3,049 2,914
Net Deferred Tax Liability $ (441) $ (468)