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Description of the Business (Details)	12 Months Ended
Description of the Business (Details)	Jan. 31, 2013 Project	Jan. 31, 2013 Entity
Description of Business (Textual) [Abstract]
Number of variable interest entities	2	2

Number of Variable Interest Entities (VIE) or potential VIEs for which the necessary information is unable to be obtained to: (1) determine whether the legal entity is a VIE, (2) determine whether it (the reporting entity) is the VIE's primary beneficiary, or (3) perform the accounting required to consolidate the VIE for which it is determined that it (the reporting entity) is the primary beneficiary.

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