Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 28, 2020	Jun. 30, 2019	Jun. 24, 2018
Components Of Deferred Tax Assets And Liabilities [Abstract]
Investments, including unconsolidated affiliates	$ 3,995	$ 5,680
Tax credits	19,457	17,237
Capital loss carryforwards	13,791	1,105
NOL carryforwards	3,907	4,381
Research and development costs	6,073	4,081
Other items	8,429	7,890
Total gross deferred tax assets	55,652	40,374
Valuation allowance	(37,439)	(26,020)	$ (15,143)
Net deferred tax assets	18,213	14,354
PP&E	(17,733)	(18,325)
Other	(677)	(295)
Total deferred tax liabilities	(18,410)	(18,620)
Net deferred tax liabilities	$ (197)	$ (4,266)