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Accounting Policies (Detail) (USD $)
12 Months Ended
Jan. 31, 2013
Jan. 31, 2013
Tournigan USA Inc [Member]
Feb. 27, 2009
Tournigan USA Inc [Member]
Business Acquisition, Percentage of Voting Interests Acquired   100.00% 100.00%
Asset Impairment Charges (in Dollars) $ 311,777