Contingencies (Detail) - USD ($) $ in Thousands			6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Jul. 05, 2015	Jun. 25, 2015
Commitments and Contingencies Disclosure [Abstract]
Proceeds from legal settlements		$ 2,578
Damages awarded	$ 4,411
Legal settlement, value				$ 3,500
Legal settlement, asset value			$ 1,667
Legal settlement, expense			$ 1,833