Loans - Summary of Balances of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Summary of balances of loans
Total loans	$ 316,541	$ 298,054
Net unamortized deferred loans costs	340	393
Allowance for loan losses	(3,439)	(3,205)	[1]
Loans, net	313,442	295,242	[1]
Construction, Land and Land Development
Summary of balances of loans
Total loans	43,894	43,048
Farmland
Summary of balances of loans
Total loans	1,080	1,128
Commercial Mortgages (Non-Owner Occupied)
Summary of balances of loans
Total loans	21,918	20,534
Commercial Mortgages (Owner Occupied)
Summary of balances of loans
Total loans	36,441	33,326
Residential First Mortgages
Summary of balances of loans
Total loans	150,222	135,267
Residential Revolving and Junior Mortgages
Summary of balances of loans
Total loans	26,362	25,400
Commercial and Industrial
Summary of balances of loans
Total loans	31,001	34,002
Consumer and Other Loans
Summary of balances of loans
Total loans	$ 5,623	$ 5,349

[1] Derived from the audited consolidated financial statements.