STOCK OPTIONS (Details Textuals) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	1,603,000
Excess tax benefit from stock option exercises	$ 12,110,000	$ 6,346,000	$ 669,000
Stock reserved for issuance to employees, directors, officers and consultants (in shares)	2,125,000
Stock reserved for issuance to employees, directors, officers and consultants under option (in shares)	2,319,000	2,314,000	3,340,000	3,639,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	1,912,000	1,667,000	2,258,000	2,590,000
Incentive stock options exercisable in percentages specified, Time Period	10 years
Income tax benefit related to Stock Options	1,500,000	1,000,000	500,000
Stock option compensation expense	3,948,000	2,647,000	1,353,000
Pre-tax unrecognized compensation expense related to nonvested stock options	14,400,000
Pre-tax unrecognized compensation expense related to nonvested stock options, expected to be recognized over a weighted average period (in years)	3 years 7 months 6 days
Fair value of stock options, Vested	$ 3,600,000	$ 2,100,000	$ 1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	(18,000)
Common Stock [Member]
Stock reserved for issuance to employees, directors, officers and consultants under option (in shares)	1,175,000
Incentive stock options exercisable in percentages specified, Time Period		9 years	9 years
Common Class A [Member]
Stock reserved for issuance to employees, directors, officers and consultants under option (in shares)	1,144,000
Incentive stock options exercisable in percentages specified, Time Period	7 years	7 years	7 years
Stock Option and Future Grants [Member]
Stock reserved for issuance to employees, directors, officers and consultants (in shares)	4,200,000
Stock reserved for issuance to employees, directors, officers and consultants under option (in shares)	2,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	1,900,000