Stockholders equity (Detail) (USD $)	61 Months Ended	1 Months Ended		12 Months Ended		1 Months Ended
	Oct. 31, 2013	Oct. 31, 2009 Common Stock	Oct. 31, 2008 Common Stock	Oct. 31, 2013 Common Stock	Oct. 31, 2009 Common Stock	Mar. 31, 2009 Common Stock Public Offering [Member]	Sep. 30, 2008 Common Stock Founder [Member] Private Placement [Member]
Stockholders Equity Note [Line Items]
Shares issued			96,000,000		9,600,000	9,600,000	96,000,000
Proceeds from issuance of shares	$ 21,000					$ 12,000	$ 9,000
Stock split, number of shares issued for each share held		8
Stock split, distribution date				October 2009