Goodwill and Intangible Assets, Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019	Jun. 29, 2019
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	$ 619,115		$ 619,115		$ 616,325
Accumulated Amortization	574,473		574,473		562,873
Net	44,642		44,642		53,452
Intangible Assets, Gross	619,115		619,115		619,115
Total purchased intangible assets	44,642		44,642		56,242
Cost, Amortization	3,111	$ 5,368	9,332	$ 19,151
Intangible asset amortization	756	756	2,268	2,285
Intangible Asset Amortization Expense	3,867	$ 6,124	11,600	$ 21,436
Future amortization expense [Abstract]
Remaining three months of 2017	3,866		3,866
2019	13,767		13,767
2020	8,088		8,088
2021	7,604		7,604
2022	4,628		4,628
Thereafter	6,689		6,689
Net	44,642		44,642		53,452
Intellectual Property [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	490,136		490,136		487,346
Accumulated Amortization	454,890		454,890		445,558
Net	35,246		35,246		41,788
Future amortization expense [Abstract]
Net	35,246		35,246		41,788
Customer relationships [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	116,505		116,505		116,505
Accumulated Amortization	107,916		107,916		105,901
Net	8,589		8,589		10,604
Future amortization expense [Abstract]
Net	8,589		8,589		10,604
Tradename [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	9,974		9,974		9,974
Accumulated Amortization	9,167		9,167		8,914
Net	807		807		1,060
Future amortization expense [Abstract]
Net	807		807		1,060
Patents [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	2,500		2,500		2,500
Accumulated Amortization	2,500		2,500		2,500
Net	0		0		0
Future amortization expense [Abstract]
Net	0		0		0
In Process Research and Development [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
IPR&D	$ 0		$ 0		$ 2,790