Net Income Per Share (Tables)
 9 Months Ended
Dec. 31, 2013
Net Income Per Share [Abstract]  
Schedule Of Weighted Average Number Of Shares
Quarter Ended Dec. 31
2013 2012
Weighted average common shares outstanding – basic 4,842,565 4,847,619
Effect of dilutive securities:
Stock options
 16,416 22,594
Warrants
 620 1,806
Shares used in computing net income per share – diluted 4,859,601 4,872,019
Nine Months Ended Dec. 31
2013 2012
Weighted average common shares outstanding – basic 4,852,356 4,832,630
Effect of dilutive securities:
Stock options
 15,128 22,430
Warrants
 556 1,791
Shares used in computing net income per share – diluted 4,868,040 4,856,851