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Stockholders' Equity (Stock Based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Dec. 30, 2016
Jan. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 488 $ 429 $ 946 $ 922
Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 43 213 189 482
Restricted stocks units and performance stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 445 216 757 440
Cost of revenues        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 62 46 102 82
Research and development        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 38 34 62 63
Selling and administrative        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 388 $ 349 $ 782 $ 777