Share-Based Compensation Expense (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Apr. 30, 2014	Oct. 31, 2013
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.94
Range of Exercise Price, Upper (in dollars per share)	$ 46.44
Number of Underlying Shares, Options Outstanding	1,615
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	2 years 4 months 10 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 24.60	$ 27.46
Aggregate Intrinsic Value, Options Outstanding	$ 2,881
Range of Exercise Price 0.94 to 16.31 [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.94
Range of Exercise Price, Upper (in dollars per share)	$ 16.31
Number of Underlying Shares, Options Outstanding	174
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3 years 7 months 28 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 8.25
Aggregate Intrinsic Value, Options Outstanding	1,929
Range of Exercise Price 16.52 to 17.29 [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 16.52
Range of Exercise Price, Upper (in dollars per share)	$ 17.29
Number of Underlying Shares, Options Outstanding	264
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	1 year 2 months 1 day
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 16.64
Aggregate Intrinsic Value, Options Outstanding	710
Range of Exercise Price 17.43 to 24.50 [Member]
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 Outstanding	353
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	1 year 0 months 7 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 20.45
Aggregate Intrinsic Value, Options Outstanding	242
Range of Exercise Price 24.69 to 28.28 [Member]
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 Outstanding	335
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	2 years 6 months 0 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 27.01
Aggregate Intrinsic Value, Options Outstanding	0
Range of Exercise Price 28.61 to 31.43 [Member]
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 Outstanding	103
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3 years 3 months 18 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 29.80
Aggregate Intrinsic Value, Options Outstanding	0
Range of Exercise Price 31.71 to 32.55 [Member]
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 Outstanding	21
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3 years 2 months 19 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 31.92
Aggregate Intrinsic Value, Options Outstanding	0
Range of Exercise Price 33.00 to 37.10 [Member]
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 Outstanding	249
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3 years 6 months 18 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 35.23
Aggregate Intrinsic Value, Options Outstanding	0
Range of Exercise Price 37.45 to 46.44 [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 37.45
Range of Exercise Price, Upper (in dollars per share)	$ 46.44
Number of Underlying Shares, Options Outstanding	116
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3 years 3 months 11 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 44.30
Aggregate Intrinsic Value, Options Outstanding	$ 0