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Acquisitions Business Acquisition Pro Forma Information (Details) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 30, 2012
Dec. 25, 2011
Dec. 25, 2011
Ruud Lighting, Inc. [Member]
Dec. 25, 2011
Ruud Lighting, Inc. [Member]
Dec. 25, 2011
Ruud Lighting, Inc. [Member]
Business Combinations Results Of Operations Of Acquired Company [Abstract]              
Revenue $ 346,286,000 $ 304,118,000 $ 662,039,000 $ 573,098,000 $ 61,148,000 $ 83,491,000  
Operating income 27,573,000 13,881,000 48,247,000 30,211,000 1,647,000 1,125,000  
Net income 20,403,000 12,078,000 36,526,000 24,897,000 1,319,000 655,000  
Basic net income per share $ 0.18 $ 0.10 $ 0.32 $ 0.22 $ 0.01 $ 0.01  
Diluted net income per share $ 0.18 $ 0.10 $ 0.31 $ 0.22 $ 0.01 $ 0.01  
Business Combination, Pro Forma Information [Abstract]              
Revenue             603,430,000
Operating income             23,872,000
Net income             23,117,000
Basic net income per share             $ 0.20
Diluted net income per share             $ 0.20
Total revenue             $ 115,000,000