Stockholders' Equity (Details) |
3 Months Ended | 12 Months Ended | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Aug. 05, 2016
USD ($)
$ / shares
|
Feb. 09, 2016
USD ($)
$ / shares
|
Aug. 06, 2015
USD ($)
$ / shares
|
Feb. 09, 2015
USD ($)
$ / shares
|
Oct. 31, 2015
USD ($)
$ / shares
shares
|
Jul. 31, 2015
shares
|
Apr. 30, 2015
shares
|
Jan. 31, 2015
USD ($)
$ / shares
shares
|
Oct. 31, 2016
USD ($)
$ / shares
shares
|
Oct. 31, 2015
USD ($)
$ / shares
shares
|
Oct. 31, 2014
USD ($)
|
Dec. 15, 2011
USD ($)
|
|
Equity [Abstract] | ||||||||||||
Share repurchase program, maximum amount authorized | $ 500,000,000 | |||||||||||
Number of shares purchased | shares | 368,000 | 0 | 0 | 100,000 | 0 | 467,539 | ||||||
Cost of common stock repurchased | $ 51,300,000 | $ 16,000,000 | $ 67,304,000 | $ 75,778,000 | ||||||||
Share repurchase program, remaining authorized amount | $ 118,400,000 | 118,400,000 | ||||||||||
Average purchase price per share (usd per share) | $ / shares | $ 139.60 | $ 159.96 | ||||||||||
Dividends on common stock | $ 1,500,000 | $ 1,400,000 | $ 1,500,000 | $ 1,400,000 | $ 2,914,000 | $ 2,906,000 | $ 2,884,000 | |||||
Cash dividend, per share (usd per share) | $ / shares | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | |||||||
Date of record | Jul. 22, 2016 | Jan. 22, 2016 | Jul. 24, 2015 | Jan. 23, 2015 | ||||||||
Common stock purchase right versus preferred share purchase right | 0.5 | |||||||||||
Percentage of acquisition of beneficial ownership | 20.00% | |||||||||||
Purchase price of the Right, subject to adjustment (usd per right) | $ 450 | |||||||||||
Percentage of assets or earning power sold | 50.00% | |||||||||||
Board of Directors may redeem the rights at, price per right (in usd per share) | $ / shares | $ 0.01 | $ 0.01 |