Affiliate transactions (Detail) (USD $)	12 Months Ended		61 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013
Related Party Transaction [Line Items]
Borrowings from affiliates	$ 1,530,897	$ 2,522,687	$ 7,946,248
Payable to affiliates	7,558,320	6,630,197	7,558,320
AXIS Consultants Pty Ltd [Member]
Related Party Transaction [Line Items]
Maximum fee rate applied to our direct costs paid by and indirect overhead costs allocated from affiliate	15.00%
Notice period required to terminate agreement	60 days
Direct costs of the entity that were paid by the management firm	225,336	268,329
Borrowings from affiliates	714,138	2,029,099
Payable to affiliates	7,325,820	6,456,697	7,325,820
Manager of Laos Operations [Member]
Related Party Transaction [Line Items]
Borrowings from affiliates	59,000	173,500
Payable to affiliates	$ 232,500	$ 173,500	$ 232,500