Three Months Ended | ||||||||||||
June 30,
|
March 24,
|
June 24,
|
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Cost of sales | $ | 1,091 | $ | 1,021 | $ | 801 | ||||||
Selling, general and administrative expense | 2,455 | 2,693 | 2,109 | |||||||||
Research and development expense | 1,600 | 1,583 | 1,122 | |||||||||
Total stock-based compensation expense | $ | 5,146 | $ | 5,297 | $ | 4,032 | ||||||