STOCK OPTIONS (Details) (USD $)	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Shares Available for Grant [Roll Forward]
Opening Balance Outstanding Shares (Shares Available For Grant)	2,389,000	2,083,000	2,822,000
Shares approved by Shareholders (Shares Available for Grant)		2,656,000
Number of Shares Granted (Shares Available For Grant)	(549,000)	(323,000)	(739,000)
Cancelled unissured shares (Shares Available For Grant)		(23,000)
Expired unissued shares (Shares Available For Grant)		(2,004,000)
Ending Balance Outstanding Shares (Shares Available For Grant)	1,840,000	2,389,000	2,083,000
Shares Outstanding [Roll Forward]
Outstanding (Shares Under Option)	2,899,000	2,893,000	4,175,000
Granted (Shares Under Option)	549,000	323,000	739,000
Cancelled (Shares Under Option)			(4,000)
Exercised (Shares Under Option)	(306,000)	(317,000)	(2,017,000)
Outstanding (Shares Under Option)	3,142,000	2,899,000	2,893,000
Weighted Average Exercise Price [Roll Forward]
Outstanding (in dollars per share)	$ 16.90	$ 14.50	$ 7.74
Granted (in dollars per share)	$ 35.74	$ 24.97	$ 25.80
Cancelled (in dollars per share)			$ 3.96
Exercised (in dollars per share)	$ 3.78	$ 3.22	$ 4.68
Outstanding (in dollars per share)	$ 21.48	$ 16.90	$ 14.50