Affiliate transactions (Detail) (USD $)	6 Months Ended		67 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Oct. 31, 2013
Related Party Transaction [Line Items]
Borrowings from affiliates	$ 193,626	$ 879,098	$ 8,139,874
Payable to affiliates	7,581,243		7,581,243	7,558,320
AXIS Consultants Pty Ltd [Member]
Related Party Transaction [Line Items]
Direct costs of the entity that were paid by the management firm	193,626
Borrowings from affiliates	170,703
Payable to affiliates	7,581,243		7,581,243	7,558,320
Manager of Laos Operations [Member]
Related Party Transaction [Line Items]
Payable to affiliates	$ 232,500		$ 232,500