Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 337,100	$ 306,771	$ 286,146
Deferred loan cost, net	660	670
Less: Allowance for loan losses	(3,373)	(3,562)	(5,729)	$ (7,239)
Total loans, net	334,387	303,879
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	133,099	116,218
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	6,770	5,202	4,315
Less: Allowance for loan losses	(41)	(30)	(34)	(135)
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	27,092	25,948	25,152
Less: Allowance for loan losses	(300)	(291)	(202)	(1,274)
Home equity lines [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	20,691	20,333	20,082
Less: Allowance for loan losses	(271)	(448)	(469)	(424)
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	33,862	31,150		31,150
Less: Allowance for loan losses	(341)	(321)	(236)	(1,409)
Construction and Land Development [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	6,770	5,202
Construction and Land Development [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	27,092	25,948
Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	66,021	69,256
Less: Allowance for loan losses	(611)	(1,167)	(1,837)	(1,200)
Non-Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	57,944	38,037
Less: Allowance for loan losses	(406)	(460)	(607)	(670)
Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	8,824	8,537
Less: Allowance for loan losses	(56)	(51)	(77)	(19)
Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	310	388
Less: Allowance for loan losses	(3)	(17)	(130)	(337)
First Deed of Trust [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	54,791	56,776
Less: Allowance for loan losses	(447)	(602)	(1,345)	(1,992)
Second Deed of Trust [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,768	6,485
Less: Allowance for loan losses	(136)	(111)	(275)	(394)
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	81,250	83,594		83,594
Less: Allowance for loan losses	(854)	(1,161)	(2,089)	(2,810)
Commercial and industrial loans (except those secured by real estate) [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	39,390	20,086
Less: Allowance for loan losses	(223)	(94)	(506)	(724)
Guaranteed student loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	47,398	53,989
Less: Allowance for loan losses	(158)	(230)	(217)	0
Consumer And Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,101	1,734
Less: Allowance for loan losses	$ (8)	$ (2)	$ (30)	$ (70)