Commitments And Contingencies (Details) (USD $)	9 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Oct. 30, 2010
Commitments And Contingencies
Beginning balance	$ 5,980,000	$ 5,808,000
Liabilities accrued for warranties issued during the period	4,501,000	2,583,000
Warranty claims paid and used during the period	(1,093,000)	(1,301,000)
Changes in liability for pre-existing warranties during the period	(1,444,000)	(1,675,000)
Ending balance	7,944,000	5,415,000
Aggregate commitment for inventory components	279,900,000
Aggregate purchase commitments reserve	$ 4,719,000		$ 4,930,000