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Equity (Stock Based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 407 $ 436
Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 110 38
Restricted and performance stock awards and units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 297 398
Cost of revenues    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 44 48
Research and development    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 27 36
Selling and administrative    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 336 $ 352