Acquisitions (Intangible Assets) (Details) (Rudd Lighting, Inc. [Member], USD $)	1 Months Ended	4 Months Ended			3 Months Ended			3 Months Ended						3 Months Ended
	Sep. 25, 2011	Dec. 25, 2011	Aug. 17, 2011	Aug. 17, 2011 Developed Technology Rights [Member]	Dec. 25, 2011 Developed Technology Rights [Member] Minimum [Member] years	Dec. 25, 2011 Developed Technology Rights [Member] Maximum [Member] years	Aug. 17, 2011 Customer Relationships [Member]	Dec. 25, 2011 Customer Relationships [Member] Minimum [Member] years	Dec. 25, 2011 Customer Relationships [Member] Maximum [Member] years	Dec. 25, 2011 Trade Names [Member] years	Aug. 17, 2011 Trade Names [Member]	Aug. 17, 2011 In Process Research and Development [Member]		Dec. 25, 2011 In Process Research and Development [Member] Minimum [Member] years	Dec. 25, 2011 In Process Research and Development [Member] Maximum [Member] years	Dec. 25, 2011 Noncompete Agreements [Member] years	Aug. 17, 2011 Noncompete Agreements [Member]
Acquired Intangible Assets [Line Items]
Amortization of Acquired Intangible Assets	$ 5,200,000	$ 6,900,000
Acquired finite-lived intangible assets				96,300,000			84,820,000				70,000	15,050,000	[1]				9,800,000
Acquired indefinite-lived intangible assets											82,880,000
Total identifiable assets			$ 288,920,000
Acquired finite-lived intangible assets, estimated life in years					7	10		7	20	3				6	7	5

[1] Initially, in-process research and development ("IPR&D") is classified as indefinite-lived assets until completion or abandonment. Therefore, amortization of IPR&D does not begin until the technological and market risk(s) no longer exist. During the interim, IPR&D intangibles are subject to annual testing for impairment or when there are indicators of impairment.