Statements of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statements of Shareholders' Equity
Common stock, issue value (in dollars per share)	$ 1.00	$ 1.00
Issuance of common stock, direct offering costs	$ 42,006	$ 54,523