SHARE-BASED COMPENSATION EXPENSE (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Apr. 30, 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)	1,783
Weighted average remaining contractual life - options (Years)	3 years 8 months 12 days
Weighted average exercise price - options (in dollars per share)	$ 24.13	$ 24.45
Aggregate intrinsic value - options	$ 4,573
Number of underlying shares - vested options (in shares)	1,644
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)	$ 23.70
Aggregate intrinsic value - vested options	$ 4,461
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)	297
Weighted average remaining contractual life - options (Years)	2 years 11 months 12 days
Weighted average exercise price - options (in dollars per share)	$ 6.88
Aggregate intrinsic value - options	$ 2,958
Number of underlying shares - vested options (in shares)	295
Weighted average remaining contractual life - vested options (in years)	2 years 10 months 28 days
Weighted average exercise price - vested options (in dollars per share)	$ 6.86
Aggregate intrinsic value - vested options	$ 2,947
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)	483
Weighted average remaining contractual life - options (Years)	5 years 6 months 15 days
Weighted average exercise price - options (in dollars per share)	$ 13.49
Aggregate intrinsic value - options	$ 1,615
Number of underlying shares - vested options (in shares)	438
Weighted average remaining contractual life - vested options (in years)	5 years 4 months 21 days
Weighted average exercise price - vested options (in dollars per share)	$ 13.38
Aggregate intrinsic value - vested options	$ 1,514
Range of Exercise Price 17.50 to 30.52
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 17.50
Range of Exercise Price, Upper (in dollars per share)	$ 30.52
Number of underlying shares - options (in shares)	410
Weighted average remaining contractual life - options (Years)	1 year 8 months 19 days
Weighted average exercise price - options (in dollars per share)	$ 26.60
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	386
Weighted average remaining contractual life - vested options (in years)	1 year 3 months 26 days
Weighted average exercise price - vested options (in dollars per share)	$ 27.08
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 31.93 to 37.10
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 31.93
Range of Exercise Price, Upper (in dollars per share)	$ 37.10
Number of underlying shares - options (in shares)	339
Weighted average remaining contractual life - options (Years)	2 years 11 months 5 days
Weighted average exercise price - options (in dollars per share)	$ 35.14
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	321
Weighted average remaining contractual life - vested options (in years)	2 years 8 months 19 days
Weighted average exercise price - vested options (in dollars per share)	$ 35.12
Aggregate intrinsic value - vested options	$ 0
Range of Exercise Price 37.82 to 55.63
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 37.82
Range of Exercise Price, Upper (in dollars per share)	$ 55.63
Number of underlying shares - options (in shares)	254
Weighted average remaining contractual life - options (Years)	5 years 3 months 22 days
Weighted average exercise price - options (in dollars per share)	$ 45.82
Aggregate intrinsic value - options	$ 0
Number of underlying shares - vested options (in shares)	204
Weighted average remaining contractual life - vested options (in years)	4 years 10 months 13 days
Weighted average exercise price - vested options (in dollars per share)	$ 45.84
Aggregate intrinsic value - vested options	$ 0