Shareholder's Equity - Schedule of Shares of Common Stock Purchased under Repurchase Plan (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended		3 Months Ended
	Oct. 31, 2014	Oct. 25, 2013	Oct. 31, 2014	Aug. 01, 2014	May 02, 2014	Jan. 31, 2014
Class Of Stock [Line Items]
Number of shares repurchased	269,228	0
Common Stock, Par Value $.20 Per Share
Class Of Stock [Line Items]
Number of shares repurchased	269,228		223,249	45,979	0	0
Share repurchased amount	30,262		$ 25,086	$ 5,176	$ 0	$ 0