Goodwill and Intangible Assets, Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Jun. 29, 2019
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	$ 619,115		$ 616,325
Accumulated Amortization	566,739		562,873
Net	52,376		53,452
Intangible Assets, Gross	619,115		619,115
Total purchased intangible assets	52,376		56,242
Cost, Amortization	3,111	$ 6,915
Intangible asset amortization	756	773
Intangible Asset Amortization Expense	3,867	$ 7,688
Future amortization expense [Abstract]
Remaining three months of 2017	11,600
2019	13,767
2020	8,088
2021	7,604
2022	4,628
Thereafter	6,689
Net	52,376		53,452
Intellectual Property [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	490,136		487,346
Accumulated Amortization	448,668		445,558
Net	41,468		41,788
Future amortization expense [Abstract]
Net	41,468		41,788
Customer relationships [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	116,505		116,505
Accumulated Amortization	106,573		105,901
Net	9,932		10,604
Future amortization expense [Abstract]
Net	9,932		10,604
Tradename [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	9,974		9,974
Accumulated Amortization	8,998		8,914
Net	976		1,060
Future amortization expense [Abstract]
Net	976		1,060
Patents [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Finite-Lived Intangible Assets, Gross	2,500		2,500
Accumulated Amortization	2,500		2,500
Net	0		0
Future amortization expense [Abstract]
Net	0		0
In Process Research and Development [Member]
Intangible Assets, Net (Excluding Goodwill) [Abstract]
IPR&D	$ 0		$ 2,790