Acquisition of New Fork Uranium Corporation (Detail) - Acquisition of New Fork transaction (Parentheticals) (New Fork)	3 Months Ended
Apr. 30, 2013
New Fork
Acquired net assets Percentage	100.00%
Issuance of shares of stock (in Shares)	50,000,000

Number of shares of equity interests issued or issuable to acquire entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)(4)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

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