Income Taxes - Components of Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Jul. 01, 2017
Deferred tax assets:
Net operating loss carryforwards	$ 157,411	$ 189,620
Depreciation and capital losses	15,242	25,809
Capitalized research and development	5,977	8,531
Inventory valuation	4,724	3,234
Accruals and reserves	16,339	13,613
Tax credit carryforwards	7,063	6,736
Stock-based compensation	2,209	2,424
Other asset impairments	1,277	1,999
Deferred tax assets	210,242	251,966
Valuation allowance	(193,435)	(225,643)
Total deferred tax assets	16,807	26,323
Deferred tax liabilities:
Acquired intangibles	(182)	(454)
Withholding tax	(95)	(95)
Total deferred tax liabilities	(277)	(549)
Net deferred tax assets	$ 16,530	$ 25,774