Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Balance at Mar. 31, 2010	$ 24,900,640	$ 607,831	$ 6,234,079	$ 18,058,730
Balance (in Shares) at Mar. 31, 2010		2,431,326
Net income	298,551			298,551
Cash dividend	(802,337)			(802,337)
Balance at Jun. 30, 2010	24,396,854	607,831	6,234,079	17,554,944
Balance (in Shares) at Jun. 30, 2010		2,431,326
Balance at Mar. 31, 2011	26,240,614	607,821	6,238,498	19,394,295
Balance (in Shares) at Mar. 31, 2011		2,431,286
Net income	168,149			168,149
Cash dividend	(611,571)			(611,571)
Exercise of stock options	124,350	3,750	120,600
Exercise of stock options (in Shares)		15,000
Compensation expense related to stock options	1,469		1,469
Balance at Jun. 30, 2011	$ 25,923,011	$ 611,571	$ 6,360,567	$ 18,950,873
Balance (in Shares) at Jun. 30, 2011		2,446,286