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Reportable Segments (Revenues, Gross Profit and Gross Margin, by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 25, 2016 | Dec. 27, 2015 | Dec. 25, 2016 | Dec. 27, 2015
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 346,962 | $ 393,758 | $ 668,291 | $ 775,307
Gross profit | $ 110,891 | $ 111,134 | $ 197,232 | $ 218,326
Gross margin | 32.00% | 28.20% | 29.50% | 28.20%
Lighting Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 208,924 | $ 254,970 | $ 392,760 | $ 503,001
Gross profit | $ 74,770 | $ 72,642 | $ 124,060 | $ 141,723
Gross margin | 35.80% | 28.50% | 31.60% | 28.20%
LED Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 138,038 | $ 138,788 | $ 275,531 | $ 272,306
Gross profit | $ 40,314 | $ 42,931 | $ 82,084 | $ 84,800
Gross margin | 29.20% | 30.90% | 29.80% | 31.10%
Total segment gross profit [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross profit | $ 115,084 | $ 115,573 | $ 206,144 | $ 226,523
Unallocated Costs [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross profit | $ (4,193) | $ (4,439) | $ (8,912) | $ (8,197)

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