Income Taxes - Summary of Components of Net Deferred Income Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Deferred income tax assets:    
Allowance for loan losses $ 6,724 $ 6,565
Deferred loan fees and costs 1,594 1,486
OREO reserve and other   256
Fair value adjustments on certificates of deposit 79 300
Deferred compensation 565 534
Unrealized loss on securities 626 203
State franchise taxes 630 500
Other 563 527
Deferred tax assets net 10,781 10,371
Deferred income tax liabilities:    
FHLB dividends 241 241
Mortgage servicing rights 328 375
Basis difference in premises, equipment and other assets 413 1,149
Deferred tax liabilities net 982 1,765
Net deferred income tax assets $ 9,799 $ 8,606