Net Income Per Share (Details)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Net Income Per Share [Abstract]
Weighted average common shares outstanding - basic	4,857,953	4,842,565	4,854,702	4,852,356
Stock options	18,121	16,416	16,568	15,128
Warrants		620		556
Shares used in computing net income per share - diluted	4,876,074	4,859,601	4,871,270	4,868,040
Stock options and warrants not included in computation of diluted earnings per share			4,000