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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. 27, 2015 | Dec. 28, 2014 | Dec. 27, 2015 | Dec. 28, 2014
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 435,806 | $ 413,157 | $ 861,295 | $ 840,829
Gross profit | $ 135,151 | $ 136,779 | $ 266,899 | $ 272,599
Gross margin | 31.00% | 33.10% | 31.00% | 32.40%
Lighting Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 254,970 | $ 230,168 | $ 503,001 | $ 453,254
Gross profit | $ 72,642 | $ 64,701 | $ 141,723 | $ 120,293
Gross margin | 28.50% | 28.10% | 28.20% | 26.50%
LED Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 153,362 | $ 151,877 | $ 301,570 | $ 325,467
Gross profit | $ 53,242 | $ 59,424 | $ 105,901 | $ 127,048
Gross margin | 34.70% | 39.10% | 35.10% | 39.00%
Power and RF Products [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue, net | $ 27,474 | $ 31,112 | $ 56,724 | $ 62,108
Gross profit | $ 14,346 | $ 17,260 | $ 28,669 | $ 35,117
Gross margin | 52.20% | 55.50% | 50.50% | 56.50%
Total segment gross profit [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross profit | $ 140,230 | $ 141,385 | $ 276,293 | $ 282,458
Unallocated Costs [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross profit | $ (5,079) | $ (4,606) | $ (9,394) | $ (9,859)

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