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)

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.

No definition available.

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- Definition

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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- Definition

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.

+ References

No definition available.

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