Acquisitions (Pro Forma Information) (Details) (USD $)	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended
	Dec. 25, 2011	Dec. 26, 2010	Dec. 25, 2011	Dec. 26, 2010	Sep. 25, 2011 Rudd Lighting, Inc. [Member]	Dec. 26, 2010 Rudd Lighting, Inc. [Member]	Sep. 26, 2010 Rudd Lighting, Inc. [Member]	Dec. 25, 2011 Rudd Lighting, Inc. [Member]	Dec. 25, 2011 Rudd Lighting, Inc. [Member]	Dec. 26, 2010 Rudd Lighting, Inc. [Member]
Business Combination, Pro Forma Information [Abstract]
Revenue						$ 313,220,000			$ 603,430,000	$ 623,516,000
Income from operations						55,625,000			23,872,000	124,048,000
Net income						50,290,000			23,117,000	105,433,000
Earnings per share, basic						$ 0.44			$ 0.20	$ 0.92
Earnings per share, diluted						$ 0.43			$ 0.20	$ 0.91
Business Combination, Results of Operations of Acquired Company [Abstract]
Revenue	304,118,000	256,983,000	573,098,000	525,420,000	61,148,000			83,491,000
Income from Operations	13,881,000	57,645,000	30,211,000	133,016,000	1,647,000			1,125,000
Net income	12,078,000	49,775,000	24,897,000	107,811,000	1,319,000			655,000
Basic net income per share	$ 0.10	$ 0.46	$ 0.22	$ 1.00	$ 0.01			$ 0.01
Diluted net income per share	$ 0.10	$ 0.45	$ 0.22	$ 0.98	$ 0.01			$ 0.01
Unaudited por foram revenue for Ruud Lighting							$ 60,100,000		$ 115,000,000	$ 107,400,000