Share-Based Compensation Expense (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2015	Oct. 31, 2014
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	1,209
Weighted Average Remaining Contractual Life (Years)	2 years 0 months 29 days
Weighted Average Exercise Price (in dollars per share)	$ 25.86	$ 25.43
Aggregate Intrinsic Value	$ 1,951
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	145
Weighted Average Remaining Contractual Life (Years)	2 years 11 months 16 days
Weighted Average Exercise Price (in dollars per share)	$ 8.22
Aggregate Intrinsic Value	1,495
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	174
Weighted Average Remaining Contractual Life (Years)	0 years 8 months 5 days
Weighted Average Exercise Price (in dollars per share)	$ 16.55
Aggregate Intrinsic Value	341
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	147
Weighted Average Remaining Contractual Life (Years)	1 year 3 months 0 days
Weighted Average Exercise Price (in dollars per share)	$ 18.42
Aggregate Intrinsic Value	115
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	277
Weighted Average Remaining Contractual Life (Years)	2 years 1 month 6 days
Weighted Average Exercise Price (in dollars per share)	$ 27.33
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	95
Weighted Average Remaining Contractual Life (Years)	2 years 5 months 9 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	9
Weighted Average Remaining Contractual Life (Years)	2 years 2 months 9 days
Weighted Average Exercise Price (in dollars per share)	$ 31.91
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	248
Weighted Average Remaining Contractual Life (Years)	2 years 9 months 11 days
Weighted Average Exercise Price (in dollars per share)	$ 35.24
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	114
Weighted Average Remaining Contractual Life (Years)	2 years 2 months 27 days
Weighted Average Exercise Price (in dollars per share)	$ 44.33
Aggregate Intrinsic Value	$ 0