Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Income Tax Disclosure [Line Items]
Tax liability for withholding taxes	$ 95	$ 95
Decrease in valuation allowance related to Japanese subsidiary	(32,200)	(60,000)	$ (44,700)
Reduction in net deferred tax asset related to change in tax law	(35,000)
Change in valuation allowance related to change in tax law	35,000
Unrecognized tax benefits	3,084	3,515	$ 3,779	$ 4,058
Operating loss carryforwards	908,945
Unrecognized tax benefits that would affect the effective tax rate	2,300
Decrease in unrecognized tax benefits	1,100
Accrued interest and penalties accrued related to unrecognized tax benefits	700	700
Deferred Tax Assets, Gross	210,242	$ 251,966
Investment Tax Credit Carryforward | Italy
Income Tax Disclosure [Line Items]
Foreign tax credit	100
United Kingdom
Income Tax Disclosure [Line Items]
Operating loss carryforwards	497,670
United States
Income Tax Disclosure [Line Items]
Operating loss carryforwards	242,169
Research and development credits	300
California
Income Tax Disclosure [Line Items]
Operating loss carryforwards	167,944
Research and development credits	1,000
Other Foreign
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,162
Canada
Income Tax Disclosure [Line Items]
Research and development credits	1,900
Other Foreign
Income Tax Disclosure [Line Items]
Foreign tax credit	3,900
Accounting Standards Update 2016-09 | Federal
Income Tax Disclosure [Line Items]
Deferred Tax Assets, Gross	2,800
Accounting Standards Update 2016-09 | States
Income Tax Disclosure [Line Items]
Deferred Tax Assets, Gross	200
Expires Between 2019 and 2037 | United States
Income Tax Disclosure [Line Items]
Operating loss carryforwards	236,000
Indefinite Life | United States
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 6,200