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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. 24, 2017	Dec. 25, 2016	Dec. 24, 2017	Dec. 25, 2016
Segment Reporting Information [Line Items]
Revenue, net	$ 367,870	$ 401,326	$ 728,268	$ 772,559
Gross profit	92,603	140,567	192,935	250,498
Cost of revenue, net	$ 275,267	$ 260,759	$ 535,333	$ 522,061
Gross margin	25.20%	35.00%	26.50%	32.40%
Lighting Products
Segment Reporting Information [Line Items]
Revenue, net	$ 144,616	$ 208,924	$ 294,340	$ 392,760
Gross profit	$ 22,964	$ 74,770	$ 54,847	$ 124,060
Gross margin	15.90%	35.80%	18.60%	31.60%
LED Products
Segment Reporting Information [Line Items]
Revenue, net	$ 152,682	$ 138,038	$ 297,202	$ 275,531
Gross profit	$ 38,606	$ 40,314	$ 77,416	$ 82,084
Gross margin	25.30%	29.20%	26.00%	29.80%
Power and RF Products
Segment Reporting Information [Line Items]
Revenue, net	$ 70,572	$ 54,364	$ 136,726	$ 104,268
Gross profit	$ 34,133	$ 25,911	$ 66,531	$ 49,371
Gross margin	48.40%	47.70%	48.70%	47.40%
Total segment gross profit
Segment Reporting Information [Line Items]
Gross profit	$ 95,703	$ 140,995	$ 198,794	$ 255,515
Unallocated Costs
Segment Reporting Information [Line Items]
Cost of revenue, net	(3,100)	(4,859)	(5,859)	(9,618)
Depreciation Expense on Reclassified Assets	$ 0	$ 4,431	$ 0	$ 4,601

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- Definition

Gross profit (aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity), as percent of revenue.

+ References

No definition available.

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- Definition

Total costs related to goods produced and sold during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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For the asset that is reclassified back to held and use from held-for-sale, the depreciation expense recognized when the asset is reclassified. This represents the difference between the carrying value at the time the decision to reclassify is made and the carrying amount that the asset would have had if it had never been classified as held for sale (including consideration of depreciation expense).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2459-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 44
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1756-110224

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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