| Three Months Ended | ||||||||||||
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June 30,
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March 24,
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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 | ||||||
International Rectifier Reports Fourth Quarter and Full Year Fiscal 2013 Results
 |  | More IC News
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For the three months ended June 30, 2013, March 24, 2013, and June 24,
2012, stock-based compensation was as follows (in thousands):
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