Description of Business and Summary of Significant Accounting Policies - Reconciliation of Weighted Average Shares Used for the Basic Computation and that Used for the Diluted Computation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Basic Earnings per Share
Net Income Attributable to Common Shareholders	$ 1,823	$ 3,168
Number of basic shares	4,861	4,855
Basic Earnings per share	$ 0.38	$ 0.65
Diluted Earnings per Share
Net Income Attributable to Common Shareholders	$ 1,823	$ 3,168
Preferred Stock Dividends	$ 3	$ 3
Effect of Dilutive Securities	72	75
Net Income available to Common Shareholders	$ 1,826	$ 3,171
Net Income available to Common Shareholders	$ 1,823	$ 3,168
Number of diluted shares	4,933	4,930
Diluted Earnings per Share	$ 0.37	$ 0.64