Net Income per Common Share (Details)	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Weighted average number of common shares outstanding for basic EPS	2,314,714	2,387,887	2,320,655	2,387,887
Shares issued upon the assumed exercise of outstanding stock options	0	0	0	0
Weighted average number of common and common equivalent shares outstanding for diluted EPS	2,314,714	2,387,887	2,320,655	2,387,887