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Non-controlling Interest (Detail) (USD $)	3 Months Ended
Non-controlling Interest (Detail) (USD $)	Apr. 30, 2013
Noncontrolling Interest [Line Items]
Balance as of January 31, 2013	$ (36,503)
Stock-based compensation	3,075
Balance as of April 30, 2013	$ (33,428)

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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