Share-Based Compensation Expense - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Shares Underlying Options Outstanding
Beginning Balance (in shares)	276,000
Granted (in shares)	0	0	0
Exercised (in shares)	(50,000)
Canceled (in shares)	(6,000)
Ending Balance (in shares)	220,000	276,000
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 33.52
Granted (in dollars per share)	0
Exercised (in dollars per share)	24.13
Canceled (in dollars per share)	37.03
Ending Balance (in dollars per share)	$ 35.54	$ 33.52