Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Cash and due from banks	$ 16,746	$ 25,589
Federal funds sold and overnight interest-bearing deposits	6,427	1,406
Investment in available-for-sale securities, at fair value	216,170	214,512
Mortgage servicing rights	2,877	2,584
Accrued interest receivable	4,702	5,183
Deposits:
Non-interest bearing demand	239,059	235,975
Savings, interest checking and money market	519,379	468,731
Accrued interest payable	452	498
Carrying Amount
Assets:
Cash and due from banks	16,746	25,589
Federal funds sold and overnight interest-bearing deposits	6,427	1,406
Investment in available-for-sale securities, at fair value	216,170	214,512
Loans, net	999,920	964,143
Investment in FHLB stock	5,212	5,149
Mortgage servicing rights	2,877	2,584
Cash surrender value - life insurance	2,430	2,409
Accrued interest receivable	4,702	5,183
Assets, Total	1,254,484	1,220,975
Deposits:
Non-interest bearing demand	239,059	235,975
Savings, interest checking and money market	519,379	468,731
Time deposits	284,566	305,960
Federal funds purchased and securities sold under agreements to repurchase	31,512	31,015
Subordinated notes	49,486	49,486
Federal Home Loan Bank advances	91,900
Other borrowings		93,392
Accrued interest payable	452	498
Liabilities, Total	1,216,354	1,185,057
Fair Value
Assets:
Cash and due from banks	16,746	25,589
Federal funds sold and overnight interest-bearing deposits	6,427	1,406
Investment in available-for-sale securities, at fair value	216,170	214,512
Loans, net	993,219	959,929
Investment in FHLB stock	5,212	5,149
Mortgage servicing rights	2,877	2,584
Cash surrender value - life insurance	2,430	2,409
Accrued interest receivable	4,702	5,183
Assets, Total	1,247,783	1,216,761
Deposits:
Non-interest bearing demand	239,059	235,975
Savings, interest checking and money market	519,379	468,731
Time deposits	282,822	304,334
Federal funds purchased and securities sold under agreements to repurchase	31,512	31,015
Subordinated notes	34,228	33,712
Federal Home Loan Bank advances	92,225
Other borrowings		93,209
Accrued interest payable	452	498
Liabilities, Total	1,199,677	1,167,474
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and due from banks	16,746	25,589
Federal funds sold and overnight interest-bearing deposits	6,427	1,406
Investment in available-for-sale securities, at fair value	0	0
Loans, net	0	0
Investment in FHLB stock	0	0
Mortgage servicing rights	0	0
Cash surrender value - life insurance	0	0
Accrued interest receivable	4,702	5,183
Assets, Total	27,875	32,178
Deposits:
Non-interest bearing demand	239,059	235,975
Savings, interest checking and money market	519,379	468,731
Time deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	31,512	31,015
Subordinated notes	0	0
Federal Home Loan Bank advances	0
Other borrowings		0
Accrued interest payable	452	498
Liabilities, Total	790,402	736,219
Other Observable Inputs (Level 2)
Assets:
Cash and due from banks	0	0
Federal funds sold and overnight interest-bearing deposits	0	0
Investment in available-for-sale securities, at fair value	216,170	214,512
Loans, net	0	0
Investment in FHLB stock	5,212	5,149
Mortgage servicing rights	0	0
Cash surrender value - life insurance	2,430	2,409
Accrued interest receivable	0	0
Assets, Total	223,812	222,070
Deposits:
Non-interest bearing demand	0	0
Savings, interest checking and money market	0	0
Time deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	0	0
Subordinated notes	34,228	33,712
Federal Home Loan Bank advances	92,225
Other borrowings		93,209
Accrued interest payable	0	0
Liabilities, Total	126,453	126,921
Net Significant Unobservable Inputs (Level 3)
Assets:
Cash and due from banks	0	0
Federal funds sold and overnight interest-bearing deposits	0	0
Investment in available-for-sale securities, at fair value	0	0
Loans, net	993,219	959,929
Investment in FHLB stock	0	0
Mortgage servicing rights	2,877	2,584
Cash surrender value - life insurance	0	0
Accrued interest receivable	0	0
Assets, Total	996,096	962,513
Deposits:
Non-interest bearing demand	0	0
Savings, interest checking and money market	0	0
Time deposits	282,822	304,334
Federal funds purchased and securities sold under agreements to repurchase	0	0
Subordinated notes	0	0
Federal Home Loan Bank advances	0
Other borrowings		0
Accrued interest payable	0	0
Liabilities, Total	$ 282,822	$ 304,334