Share-Based Compensation Expense (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Jul. 31, 2013
Summary of stock option activity [Roll Forward]
Shares Underlying Options Outstanding, Beginning Balance (in shares)	3,207
Shares Underlying Options Outstanding, Granted (in shares)	0
Shares Underlying Options Outstanding, Exercised (in shares)	(139)
Shares Underlying Options Outstanding, Canceled (in shares)	(829)
Shares Underlying Options Outstanding, Ending Balance (in shares)	2,239
Weighted average exercise price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance (in dollars per share)	$ 27.58
Weighted Average Exercise Price, Granted (in dollars per share)	$ 0.00
Weighted Average Exercise Price, Exercised (in dollars per share)	$ 11.28
Weighted Average Exercise Price, Canceled (in dollars per share)	$ 31.54
Weighted Average Exercise Price, Ending Balance (in dollars per share)	$ 27.13