Capital Shares - Capital Shares (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Equity [Abstract]
Number of Shares	459	1,831	3,024
Total Amount	$ 30,443	$ 86,022	$ 134,163
Average per Share	$ 66.29	$ 46.98	$ 44.37