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Inventories And Major Vendors - Additional Information (Detail)	9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Schedule of Inventory [Line Items]
Number of major vendors	2	4
Vendor One
Schedule of Inventory [Line Items]
Purchases of connector products, percentage	17.00%	29.00%
Vendor Two
Schedule of Inventory [Line Items]
Purchases of connector products, percentage	13.00%	16.00%
Vendor Three
Schedule of Inventory [Line Items]
Purchases of connector products, percentage		12.00%
Vendor Four
Schedule of Inventory [Line Items]
Purchases of connector products, percentage		10.00%