Equity (Stock Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 03, 2020	Mar. 29, 2019	Apr. 03, 2020	Mar. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 507	$ 458	$ 1,315	$ 1,396
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	197	116	460	271
Restricted and performance stock awards and units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	310	342	855	1,125
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	53	44	149	144
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	33	42	92	123
Selling and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 421	$ 372	$ 1,074	$ 1,129