Basic and Diluted Net Income Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Weighted average common shares outstanding, basic	5,422,541	5,375,061	5,399,131	5,348,730
Dilutive common equivalent shares	2,000	14,000	7,000	26,000
Weighted average common shares outstanding, diluted	5,424,989	5,389,425	5,406,053	5,375,472