XML 31 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6

Description of the Business and Basis of Presentation (Details)	9 Months Ended	12 Months Ended
	Oct. 31, 2012	Jan. 31, 2012 Entity
Description of the Business and Basis of Presentation (Textual) [Abstract]
Minimum percentage of net revenue	90.00%
Number of variable interest entity		2

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- Definition

Minimum percentage of net revenue.

+ References

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- Definition

Number of Variable Interest Entities.

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No definition available.

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