Subsequent Events (Narrative) (Details) (Subsequent Event, A10 Networks, Positive Outcome of Litigation, USD $) In Millions, unless otherwise specified	6 Months Ended
	Apr. 27, 2013	May 20, 2013
Subsequent Event
Subsequent Event, Date	May 20, 2013
Cash
Subsequent Event
Subsequent Event, Amount	$ 5.0
Convertible Promissory Note Payable To Brocade
Subsequent Event
Subsequent Event, Amount	$ 70.0
Convertible Promissory Note Payable To Brocade, Stated Interest Rate		8.00%
Convertible Promissory Note Payable To Brocade, Duration After Issuance Date		6 months
Convertible Promissory Note Payable To Brocade, Percent Of Principal Amount Convertible		50.00%
Convertible Promissory Note Payable To Brocade, Warrants Initial Award Period		90 days
Convertible Promissory Note Payable To Brocade, Warrants Subsequent Award Period		30 days