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Reportable Segments (Revenues, Gross Profit and Gross Margin, by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 25, 2018	Mar. 31, 2019	Mar. 25, 2018
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 274,050	$ 225,200	$ 828,729	$ 659,128
Gross profit	100,454	74,863	302,285	213,930
Cost of Goods and Services Sold	$ 173,596	$ 150,337	$ 526,444	$ 445,198
Gross margin	36.70%	33.20%	36.50%	32.50%
Power and RF Products
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 141,253	$ 81,902	$ 403,958	$ 218,628
Gross profit	$ 68,851	$ 39,285	$ 193,947	$ 105,816
Gross margin	48.70%	48.00%	48.00%	48.40%
LED Products
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 132,797	$ 143,298	$ 424,771	$ 440,500
Gross profit	$ 36,982	$ 37,764	$ 121,787	$ 115,180
Gross margin	27.80%	26.40%	28.70%	26.10%
Total segment gross profit
Segment Reporting Information [Line Items]
Gross profit	$ 105,833	$ 77,049	$ 315,734	$ 220,996
Unallocated Costs
Segment Reporting Information [Line Items]
Cost of Goods and Services Sold	(3,938)	(2,186)	(10,782)	(7,066)
Business Combination, Acquisition Related Costs	$ (1,441)	$ 0	$ (2,667)	$ 0

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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.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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