Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 25, 2011
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty accrual, beginning balance	$ 3,860
Costs accrued for new warranty contracts and changes in estimates for pre-existing warranties	323
Changes in estimates for pre-existing warranties	(400)
Expenditures	958
Warranty accrual, ending balance	5,848
Minimum [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty periods range (in days / years)	90
Maximum [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty periods range (in days / years)	10
Rudd Lighting, Inc. [Member]
Product Liability Contingency [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Warranty	$ 3,023