Description of the Business and Significant Accounting Policies (Details 3)	12 Months Ended
Jan. 31, 2013
Minimum
Property and Equipment
Useful Life	3 years
Maximum
Property and Equipment
Useful Life	5 years
Computer equipment and software
Property and Equipment
Useful Life	3 years
Furniture and fixtures
Property and Equipment
Useful Life	5 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration