Inventories and major vendors - Additional Information (Detail)	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Vendor One
Schedule of Inventory [Line Items]
Purchases of connector products, percentage	20.00%	20.00%
Vendor Two
Schedule of Inventory [Line Items]
Purchases of connector products, percentage	17.00%	14.00%