SHARE-BASED COMPENSATION EXPENSE (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2016	Oct. 31, 2015
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.05
Range of Exercise Price, Upper (in dollars per share)	$ 55.63
Number of underlying shares - options (in shares)	2,084
Weighted average remaining contractual life - options (Years)	3 years 7 months 17 days
Weighted average exercise price - options (in dollars per share)	$ 25.13	$ 24.45
Aggregate intrinsic value - options	$ 5,886
Number of underlying shares - vested options (in shares)	1,890
Weighted average remaining contractual life - vested options (in years)	3 years 3 months
Weighted average exercise price - vested options (in dollars per share)	$ 24.86
Aggregate intrinsic value - vested options	$ 5,613
Range of Exercise Price 0.05 to 11.16
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.05
Range of Exercise Price, Upper (in dollars per share)	$ 11.16
Number of underlying shares - options (in shares)	315
Weighted average remaining contractual life - options (Years)	3 years 3 months 29 days
Weighted average exercise price - options (in dollars per share)	$ 6.65
Aggregate intrinsic value - options	$ 3,506
Number of underlying shares - vested options (in shares)	314
Weighted average remaining contractual life - vested options (in years)	3 years 3 months 18 days
Weighted average exercise price - vested options (in dollars per share)	$ 6.63
Aggregate intrinsic value - vested options	$ 3,492
Range of Exercise Price 11.34 to 17.24
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 11.34
Range of Exercise Price, Upper (in dollars per share)	$ 17.24
Number of underlying shares - options (in shares)	563
Weighted average remaining contractual life - options (Years)	5 years 7 months 2 days
Weighted average exercise price - options (in dollars per share)	$ 13.55
Aggregate intrinsic value - options	$ 2,378
Number of underlying shares - vested options (in shares)	486
Weighted average remaining contractual life - vested options (in years)	5 years 4 months 6 days
Weighted average exercise price - vested options (in dollars per share)	$ 13.41
Aggregate intrinsic value - vested options	$ 2,121
Range of Exercise Price 17.43 to 24.50
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 17.43
Range of Exercise Price, Upper (in dollars per share)	$ 24.5
Number of underlying shares - options (in shares)	70
Weighted average remaining contractual life - options (Years)	5 years 2 months 27 days
Weighted average exercise price - options (in dollars per share)	$ 19.50
Aggregate intrinsic value - options	$ 2
Number of underlying shares - vested options (in shares)	43
Weighted average remaining contractual life - vested options (in years)	3 years 4 months 24 days
Weighted average exercise price - vested options (in dollars per share)	$ 20.31
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 24.69 to 28.28
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 24.69
Range of Exercise Price, Upper (in dollars per share)	$ 28.28
Number of underlying shares - options (in shares)	265
Weighted average remaining contractual life - options (Years)	1 year 2 months 5 days
Weighted average exercise price - options (in dollars per share)	$ 27.38
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	263
Weighted average remaining contractual life - vested options (in years)	1 year 1 month 10 days
Weighted average exercise price - vested options (in dollars per share)	$ 27.40
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 28.61 to 31.43
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 28.61
Range of Exercise Price, Upper (in dollars per share)	$ 31.43
Number of underlying shares - options (in shares)	88
Weighted average remaining contractual life - options (Years)	1 year 7 months 2 days
Weighted average exercise price - options (in dollars per share)	$ 29.81
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	88
Weighted average remaining contractual life - vested options (in years)	1 year 7 months 2 days
Weighted average exercise price - vested options (in dollars per share)	$ 29.81
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 31.71 to 32.55
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 31.71
Range of Exercise Price, Upper (in dollars per share)	$ 32.55
Number of underlying shares - options (in shares)	46
Weighted average remaining contractual life - options (Years)	5 years 9 months 7 days
Weighted average exercise price - options (in dollars per share)	$ 32.03
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	37
Weighted average remaining contractual life - vested options (in years)	5 years 7 months 2 days
Weighted average exercise price - vested options (in dollars per share)	$ 32.03
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 33.00 to 37.10
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 33
Range of Exercise Price, Upper (in dollars per share)	$ 37.1
Number of underlying shares - options (in shares)	380
Weighted average remaining contractual life - options (Years)	2 years 2 months 19 days
Weighted average exercise price - options (in dollars per share)	$ 35.90
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	364
Weighted average remaining contractual life - vested options (in years)	2 years
Weighted average exercise price - vested options (in dollars per share)	$ 35.85
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 37.31 to 55.63
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 37.31
Range of Exercise Price, Upper (in dollars per share)	$ 55.63
Number of underlying shares - options (in shares)	357
Weighted average remaining contractual life - options (Years)	4 years 15 days
Weighted average exercise price - options (in dollars per share)	$ 45.64
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	295
Weighted average remaining contractual life - vested options (in years)	3 years 4 months 2 days
Weighted average exercise price - vested options (in dollars per share)	$ 45.60
Aggregate intrinsic value - vested options	$ 0