Earnings Per Share - Schedule of Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net Income, Basic Earnings Per Share: Income available to common shareholders	$ 188	$ 603	$ 690	$ 1,332
Net Income, Diluted Earnings Per Share: Income available to common shareholders and assumed conversions	$ 188	$ 603	$ 690	$ 1,332
Weighted Average Shares, Basic Earnings Per Share: Income available to common shareholders	3,026,772	2,992,134	3,023,983	2,991,447
Weighted Average Shares, Effect of dilutive stock options	14,076	5,341	14,721	4,588
Weighted Average Shares, Diluted Earnings Per Share: Income available to common shareholders and assumed conversions	3,040,848	2,997,475	3,038,704	2,996,035
Per Share Amount, Basic Earnings Per Share: Income available to common shareholders	$ 0.06	$ 0.20	$ 0.23	$ 0.45
Per Share Amount, Diluted Earnings Per Share: Income available to common shareholders and assumed conversions	$ 0.06	$ 0.20	$ 0.23	$ 0.45