Income Taxes (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Allowance for credit losses $ 2,968 $ 2,671
Net unrealized loss on securities available for sale 326 0
Deferred and accrued compensation 1,562 848
Deferred loan fees and costs 605 515
Post-retirement benefits 172 110
Nonaccrual loan interest income 324 56
Other-than-temporary impairment 196 41
Other 93 117
Gross deferred tax assets 6,246 4,358
Deferred tax liabilities:    
Depreciation and amortization (649) (1,081)
Net unrealized gain on securities available for sale 0 (523)
Federal Home Loan Bank dividends (1,093) (482)
Purchase accounting adjustments (984) (550)
Mortgage servicing rights (158) 0
Other (11) (38)
Gross deferred tax liabilities (2,895) (2,674)
NET DEFERRED TAX ASSET $ 3,351 $ 1,684