Preferred and Common Stock - Additional information (Details) - USD ($)	Oct. 31, 2016	Oct. 31, 2015	Sep. 02, 2015
Class of Stock [Line Items]
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
2015 Share Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, remaining authorized amount	$ 141,900,000
2015 Share Repurchase Program | Maximum
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 200,000,000.0