Share-Based Compensation Expense (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Jul. 31, 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)	$ 47.32
Number of Underlying Shares	1,378
Weighted Average Remaining Contractual Life (Years)	2 years 5 months 1 day
Weighted Average Exercise Price (in dollars per share)	$ 25.00	$ 27.46
Aggregate Intrinsic Value	$ 2,595
Range of Exercise Price 0.94 to 16.31
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	163
Weighted Average Remaining Contractual Life (Years)	3 years 5 months 9 days
Weighted Average Exercise Price (in dollars per share)	$ 8.08
Aggregate Intrinsic Value	1,791
Range of Exercise Price 16.52 to 17.29
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	247
Weighted Average Remaining Contractual Life (Years)	0 years 11 months 12 days
Weighted Average Exercise Price (in dollars per share)	$ 16.64
Aggregate Intrinsic Value	609
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	196
Weighted Average Remaining Contractual Life (Years)	1 year 5 months 9 days
Weighted Average Exercise Price (in dollars per share)	$ 18.70
Aggregate Intrinsic Value	195
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	286
Weighted Average Remaining Contractual Life (Years)	2 years 7 months 24 days
Weighted Average Exercise Price (in dollars per share)	$ 27.31
Aggregate Intrinsic Value	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	102
Weighted Average Remaining Contractual Life (Years)	3 years 0 months 11 days
Weighted Average Exercise Price (in dollars per share)	$ 29.79
Aggregate Intrinsic Value	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	19
Weighted Average Remaining Contractual Life (Years)	1 year 5 months 5 days
Weighted Average Exercise Price (in dollars per share)	$ 31.92
Aggregate Intrinsic Value	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	249
Weighted Average Remaining Contractual Life (Years)	3 years 3 months 15 days
Weighted Average Exercise Price (in dollars per share)	$ 35.23
Aggregate Intrinsic Value	0
Range of Exercise Price 37.31 to 47.32
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)	$ 47.32
Number of Underlying Shares	116
Weighted Average Remaining Contractual Life (Years)	2 years 11 months 27 days
Weighted Average Exercise Price (in dollars per share)	$ 44.30
Aggregate Intrinsic Value	$ 0