Net Income Per Share (Details)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Net Income Per Share [Abstract]
Weighted average common shares outstanding - basic	4,842,565	4,847,619	4,852,356	4,832,630
Stock options	16,416	22,594	15,128	22,430
Warrants	620	1,806	556	1,791
Shares used in computing net income per share - diluted	4,859,601	4,872,019	4,868,040	4,856,851
Stock options and warrants not included in computation of diluted earnings per share		5,000		5,000