Income Taxes - Deferred Tax Valuation Allowance Activities (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands	12 Months Ended
Jun. 28, 2020	Jun. 28, 2020	Jun. 30, 2019	Jun. 24, 2018
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ (26,020)		$ (15,143)	$ (17,957)
(Increase) decrease in valuation allowance		$ (11,419)	(10,877)	2,814
Balance at end of period	$ (37,439)	$ (37,439)	$ (26,020)	$ (15,143)

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration