Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings
Beginning balance at Mar. 31, 2010		$ 7,975,160	$ 29,003,674	$ (5,475,964)	$ 24,855,540
Net earnings	8,155,637				8,155,637
Cash dividends ($0.84) and ($0.52) for 2011 and 2012 respectively					(5,711,533)
Ending balance at Mar. 31, 2011	58,802,514	7,975,160	29,003,674	(5,475,964)	27,299,644
Net earnings	8,150,464				8,150,464
Cash dividends ($0.84) and ($0.52) for 2011 and 2012 respectively					(3,535,710)
Ending balance at Mar. 31, 2012	$ 63,417,268	$ 7,975,160	$ 29,003,674	$ (5,475,964)	$ 31,914,398