Share-Based Compensation Expense - Stock Options Outstanding (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Summarizes information with respect to stock options outstanding
Weighted average exercise price, (in dollars per share)	$ 35.54	$ 33.52
$6.43 to $10.50
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	6.43
Range of exercise price, upper (in dollars per share)	$ 10.50
Number of underlying shares (in shares)	4
Weighted average remaining contractual life (in years)	24 days
Weighted average exercise price, (in dollars per share)	$ 8.42
Aggregate intrinsic value	$ 117
$11.34 to $15.67
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 11.34
Range of exercise price, upper (in dollars per share)	$ 15.67
Number of underlying shares (in shares)	49
Weighted average remaining contractual life (in years)	2 years 9 months 14 days
Weighted average exercise price, (in dollars per share)	$ 13.51
Aggregate intrinsic value	$ 1,123
$17.50 to $19.25
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 17.50
Range of exercise price, upper (in dollars per share)	$ 19.25
Number of underlying shares (in shares)	11
Weighted average remaining contractual life (in years)	4 years 7 months 6 days
Weighted average exercise price, (in dollars per share)	$ 18.17
Aggregate intrinsic value	$ 202
$32.06 to $37.10
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 32.06
Range of exercise price, upper (in dollars per share)	$ 37.10
Number of underlying shares (in shares)	31
Weighted average remaining contractual life (in years)	3 years 3 months 7 days
Weighted average exercise price, (in dollars per share)	$ 36.04
Aggregate intrinsic value	$ 28
$41.52 to $55.63
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 41.52
Range of exercise price, upper (in dollars per share)	$ 55.63
Number of underlying shares (in shares)	125
Weighted average remaining contractual life (in years)	3 years 5 months 23 days
Weighted average exercise price, (in dollars per share)	$ 46.47
Aggregate intrinsic value	$ 0
$6.43 to $55.63
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 6.43
Range of exercise price, upper (in dollars per share)	$ 55.63
Number of underlying shares (in shares)	220
Weighted average remaining contractual life (in years)	3 years 3 months 18 days
Weighted average exercise price, (in dollars per share)	$ 35.54
Aggregate intrinsic value	$ 1,470