Affiliate transactions (Detail) (USD $)	3 Months Ended		64 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Oct. 31, 2013
Related Party Transaction [Line Items]
Borrowings from affiliates	$ 92,405	$ 398,829	$ 8,038,653
Payable to affiliates	7,080,131		7,080,131	7,558,320
Manager of Laos Operations [Member]
Related Party Transaction [Line Items]
Payable to affiliates	232,500		232,500
AXIS Consultants Pty Ltd [Member]
Related Party Transaction [Line Items]
Direct costs of the entity that were paid by the management firm	92,405
Borrowings from affiliates	571,807
Payable to affiliates	$ 7,080,131		$ 7,080,131	$ 7,558,320