Stockholders' Equity (Schedule of Stock Repurchses) (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Stockholders Equity Schedule Of Stock Repurchses Details
Shares repurchased, beginning balance	4,172,785	3,870,985	282,376
Repurchase of common stock, shares	0	301,800	3,588,609
Shares repurchased, ending balance	4,172,785	4,172,785	3,870,985
Weighted-average price per share, beginning	$ 2.23	$ 2.26	$ 0.75
Weighted-average price per share, repurchase	$ 0	$ 2.95	$ 2.30
Weighted-average price per share, ending	$ 2.23	$ 2.23	$ 2.26
Amount repurchased, beginning balance	$ 8,911,654	$ 8,022,690	$ 211,741
Repurchase of common stock, amount	0	888,964	7,810,949
Amount repurchased, ending balance	8,911,654	8,911,654	8,022,690
Shares repurchased from members of the board of directors, shares		352,030
Shares repurchased from members of the board of directors, amount		1,500,000
Shares withheld related to net share settlement of restricted stock awards, shares	73,751
Shares withheld related to net share settlement of restricted stock awards, amount	$ 400,000