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Equity Awards and Private Placement Investment (Details 1)	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Weighted average assumptions used for estimating fair value of options granted
Risk-free interest rate	0.33%	1.26%
Dividend yield	0.00%	0.00%
Current weighted-average volatility factor of the expected market price of Common Stock	0.58%	0.53%
Weighted-average expected life of stock options	5 years	5 years
Forfeiture rate	0.00%	0.00%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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