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Income Taxes (Narrative) (Detail) - USD ($)
 12 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jul. 01, 2017
Jul. 02, 2016
Income Tax Disclosure [Abstract]        
Tax Credit Carryforwards $ 9,100,000      
Tax Credit Carryforwards, R&D $ 9,000,000.0      
Accumulated unremitted earnings tax rate for cash repatriation 15.50%      
Accumulated unremitted earnings tax rate for non liquid asset 8.00%      
Toll Tax Liability $ 800,000      
Other Tax Expense (Benefit) 1,300,000      
Current Income Tax Expense (Benefit) 1,300,000      
Toll Tax Liability, Change in Amount 400,000      
Estimated Federal And State Income Taxes And Potential Withholding Taxes 800,000      
Effect of repatriation of foreign earnings, net $ 7,800,000      
Remaining Contractual Term Of Tax Credit Expiration Date 20 years      
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax $ 726,000      
Unrecognized Tax Benefits $ 4,099,000 $ 4,011,000 $ 3,947,000 $ 3,760,000