Stock Options (Details) (USD $)	3 Months Ended
Apr. 30, 2013
Number of shares:
Outstanding, beginning	9,400,000
Granted
Exercised
Forfeited and cancelled
Exercisable	916,667
Outstanding, beginning	$ 0.26
Granted
Exercised
Forfeited and cancelled
Outstanding, ending	$ 0.26
Exercisable	$ 0.16
Weighted Average Remaining Contractual Term:
Weighted Average Remaining Contractual Term of Options outstanding, ending	4 years 6 months 14 days
Weighted Average Remaining Contractual Term of Options exercisable	4 years 8 months 16 days

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Number of share options (or share units) exercised during the current period.

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