Fair Value - Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying Value
Financial assets
Cash and cash equivalents	$ 27,655	$ 49,167
Securities	171,440	135,371
Restricted securities	9,116	6,102
Loans held for sale	735	364
Net loans	624,956	545,219
Accrued interest receivable	3,012	2,417
Financial liabilities
Deposits	718,504	698,824
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,000	20,000
Notes payable		10,250
Subordinated debentures	20,620	20,620
Series B mandatorily redeemable preferred stock	268	268
Accrued interest payable	235	5,142
Fair value measurements
Financial assets
Cash and cash equivalents	27,655	49,167
Securities	171,440	135,371
Loans held for sale	760	379
Net loans	629,017	553,447
Accrued interest receivable	3,012	2,417
Financial liabilities
Deposits	718,689	699,471
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,271	20,546
Notes payable		10,264
Subordinated debentures	13,933	13,851
Series B mandatorily redeemable preferred stock	273	268
Accrued interest payable	235	5,142
Fair value measurements | Level 1
Financial assets
Cash and cash equivalents	27,655	44,167
Securities	0	0
Restricted securities	0	0
Loans held for sale	0	0
Net loans	0	0
Accrued interest receivable	0	0
Financial liabilities
Deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	0	0
Federal Home Loan Bank advances	0	0
Notes payable		0
Subordinated debentures	0	0
Series B mandatorily redeemable preferred stock	0	0
Accrued interest payable	0	0
Fair value measurements | Level 2
Financial assets
Cash and cash equivalents	0	5,000
Securities	166,419	135,371
Restricted securities	0	0
Loans held for sale	760	379
Net loans	0	0
Accrued interest receivable	402	336
Financial liabilities
Deposits	718,689	699,471
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,271	20,546
Notes payable		0
Subordinated debentures	0	0
Series B mandatorily redeemable preferred stock	273	268
Accrued interest payable	169	369
Fair value measurements | Level 3
Financial assets
Cash and cash equivalents	0	0
Securities	5,021	0
Restricted securities	0	0
Loans held for sale	0	0
Net loans	629,017	553,447
Accrued interest receivable	2,610	2,081
Financial liabilities
Deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	0	0
Federal Home Loan Bank advances	0	0
Notes payable		10,264
Subordinated debentures	13,933	13,851
Series B mandatorily redeemable preferred stock	0	0
Accrued interest payable	$ 66	$ 4,773