Note 2 - Earnings Per Common Share (Detail) - The computation of earnings per common share is as follows: (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income (in Dollars)	$ 1,669,860	$ 1,350,224
Earnings Per Share:
Basic (in Dollars per share)	$ 0.68	$ 0.55
Diluted (in Dollars per share)	$ 0.68	$ 0.55
Weighted Average Shares Outstanding:
Basic	2,446,286	2,443,786
Diluted	2,454,368	2,451,209