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Stock-Based Compensation (Tables)
9 Months Ended
Feb. 24, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following table summarizes the stock-based compensation for stock options and RSUs (in thousands):
 
Three Months Ended
 
Nine Months Ended
 
February 24, 2019
 
February 25, 2018
 
February 24, 2019
 
February 25, 2018
Options
$
245

 
$
380

 
$
689

 
$
1,057

RSUs
571

 
767

 
1,793

 
2,155

Total stock-based compensation
$
816

 
$
1,147

 
$
2,482

 
$
3,212

The following table summarizes the stock-based compensation by income statement line item (in thousands):
 
Three Months Ended
 
Nine Months Ended
 
February 24, 2019
 
February 25, 2018
 
February 24, 2019
 
February 25, 2018
Cost of sales
$
116

 
$
137

 
$
334

 
$
398

Research and development
29

 
41

 
84

 
82

Selling, general and administrative
671

 
969

 
2,064

 
2,732

Total stock-based compensation
$
816

 
$
1,147

 
$
2,482

 
$
3,212