Share-Based Compensation Expense - Stock Options Outstanding (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Summarizes information with respect to stock options outstanding
Weighted average exercise price, (in dollars per share)	$ 33.52	$ 30.19
$5.34 to $11.16
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	5.34
Range of exercise price, upper (in dollars per share)	$ 11.16
Number of underlying shares (in shares)	14
Weighted average remaining contractual life (in years)	1 year 3 months 22 days
Weighted average exercise price, (in dollars per share)	$ 8.30
Aggregate intrinsic value	$ 323
Number of underlying shares, vested options (in shares)	14
Weighted average remaining contractual life, vested options (Years)	1 year 3 months 22 days
Weighted average exercise price, vested options (per share)	$ 8.30
Aggregate intrinsic value, vested options	$ 323
$11.34 to $16.79
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)	$ 16.79
Number of underlying shares (in shares)	64
Weighted average remaining contractual life (in years)	3 years 7 months 17 days
Weighted average exercise price, (in dollars per share)	$ 13.53
Aggregate intrinsic value	$ 1,191
Number of underlying shares, vested options (in shares)	64
Weighted average remaining contractual life, vested options (Years)	3 years 7 months 13 days
Weighted average exercise price, vested options (per share)	$ 13.52
Aggregate intrinsic value, vested options	$ 1,185
$17.50 to $25.36
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)	$ 25.36
Number of underlying shares (in shares)	11
Weighted average remaining contractual life (in years)	5 years 7 months 6 days
Weighted average exercise price, (in dollars per share)	$ 18.44
Aggregate intrinsic value	$ 156
Number of underlying shares, vested options (in shares)	11
Weighted average remaining contractual life, vested options (Years)	5 years 6 months 18 days
Weighted average exercise price, vested options (per share)	$ 18.21
Aggregate intrinsic value, vested options	$ 151
$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)	54
Weighted average remaining contractual life (in years)	3 years 11 months 19 days
Weighted average exercise price, (in dollars per share)	$ 35.60
Aggregate intrinsic value	$ 0
Number of underlying shares, vested options (in shares)	54
Weighted average remaining contractual life, vested options (Years)	3 years 11 months 19 days
Weighted average exercise price, vested options (per share)	$ 35.60
Aggregate intrinsic value, vested options	$ 0
$37.82 to $55.63
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 37.82
Range of exercise price, upper (in dollars per share)	$ 55.63
Number of underlying shares (in shares)	133
Weighted average remaining contractual life (in years)	4 years 7 months 2 days
Weighted average exercise price, (in dollars per share)	$ 46.29
Aggregate intrinsic value	$ 0
Number of underlying shares, vested options (in shares)	132
Weighted average remaining contractual life, vested options (Years)	4 years 7 months 2 days
Weighted average exercise price, vested options (per share)	$ 46.29
Aggregate intrinsic value, vested options	$ 0
$5.34 to $55.63
Summarizes information with respect to stock options outstanding
Range of exercise price, lower (in dollars per share)	$ 5.34
Range of exercise price, upper (in dollars per share)	$ 55.63
Number of underlying shares (in shares)	276
Weighted average remaining contractual life (in years)	4 years 1 month 17 days
Weighted average exercise price, (in dollars per share)	$ 33.52
Aggregate intrinsic value	$ 1,670
Number of underlying shares, vested options (in shares)	275
Weighted average remaining contractual life, vested options (Years)	4 years 1 month 13 days
Weighted average exercise price, vested options (per share)	$ 33.56
Aggregate intrinsic value, vested options	$ 1,659