STOCK OPTIONS (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Number Outstanding (in shares)	2,319	2,314	3,340	3,639
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 21.13	$ 18.13	$ 9.68	$ 7.44
Outstanding Weighted Average Contractual Life (in years)	6 years 4 months 24 days
Outstanding Aggregated Intrinsic Value (in dollars)	$ 31,524
Number Exercisable (in shares)	1,109
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 13.63
Exercisable Weighted Average Contractual Life (in years)	4 years 4 months 24 days
Exercisable Aggregate Intrinsic Value (in dollars)	23,847
Common Stock [Member]
Number Outstanding (in shares)	1,175
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 22.55
Outstanding Weighted Average Contractual Life (in years)	6 years 4 months 24 days
Outstanding Aggregated Intrinsic Value (in dollars)	18,960
Number Exercisable (in shares)	632
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 16.69
Exercisable Weighted Average Contractual Life (in years)	5 years 1 month 6 days
Exercisable Aggregate Intrinsic Value (in dollars)	13,866
Common Class A [Member]
Number Outstanding (in shares)	1,144
Outstanding Weighted Average Exercise Price (in dollars per share)	$ 19.66
Outstanding Weighted Average Contractual Life (in years)	6 years 6 months
Outstanding Aggregated Intrinsic Value (in dollars)	12,564
Number Exercisable (in shares)	477
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 9.57
Exercisable Weighted Average Contractual Life (in years)	3 years 7 months
Exercisable Aggregate Intrinsic Value (in dollars)	$ 9,981