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Affiliate transactions (Detail) (USD $)	3 Months Ended		52 Months Ended
Affiliate transactions (Detail) (USD $)	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Oct. 31, 2012
Related Party Transaction [Line Items]
Advances from affiliates	$ 7,083,331		$ 7,083,331	$ 6,630,197
Borrowings from affiliates	398,829	762,815	6,814,180
Interest charged by affiliates	0	0
AXIS Consultants Pty Ltd [Member]
Related Party Transaction [Line Items]
Borrowings from affiliates	445,634
Manager of Laos Operations [Member]
Related Party Transaction [Line Items]
Advances from affiliates	181,000		181,000	173,500
Borrowings from affiliates	$ 7,500

Amount of receivables owed to an entity that is affiliated with the reporting entity by means of direct or indirect ownership, which are usually due after one year (or one business cycle, if longer).

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- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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