Loans (Schedule of Information Regarding Non-Performing Assets) (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Non-accrual loans	$ 1,580	$ 2,030
Accruing loans delinquent 90 days or more	710	472
Restructured loans, net	45	46
Total nonperforming loans	2,335	2,548
Real estate owned and other repossessed assets, net	606	595
Total	$ 2,941	$ 3,143
Total non-performing assets as a percentage of total assets	0.46%	0.50%
Allowance for loan losses	$ 3,940	$ 3,550	$ 2,625	$ 2,450
Percent of allowance for loan losses to non-performing loans	168.74%	139.32%
Percent of allowance for loan losses to non-performing assets	133.97%	112.95%