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Restructuring (Tables) | 3 Months Ended
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Mar. 28, 2015
Restructuring and Related Activities [Abstract] |
Severance Costs, Liability | The following table rolls forward the Company’s severance and retention cost liability:
| December 27, 2014 |  | Expense |  | Payments and Adjustments |  | March 28, 2015
| (in thousands)
Severance and retention cost liability | $ | 2,666 |  |  | $ | 1,130 |  |  | $ | (1,621 | ) |  | $ | 2,175 |
Total | $ | 2,666 |  |  | $ | 1,130 |  |  | $ | (1,621 | ) |  | $ | 2,175 |
Severance Costs, By Classification | The following table presents severance and retention costs by classification on the income statement:
| Three Months Ended
| March 28, 2015 |  | March 29, 2014
| (in thousands)
Severance charges included in cost of revenue | $ | 530 |  |  | $ | 1,682 |
Severance charges included in selling, general and administrative | 600 |  |  | 218 |
Total expense | $ | 1,130 |  |  | $ | 1,900 |
Severance Costs, By Segment | The following table presents severance and retention cost by reportable segment:
| Three Months Ended
| March 28, 2015 |  | March 29, 2014
| (in thousands)
Research models and services | $ | 919 |  |  | $ | 1,584 |
Discovery and safety assessment | 19 |  |  | 195 |
Manufacturing support | 177 |  |  | — |
Corporate | 15 |  |  | 121 |
Total expense | $ | 1,130 |  |  | $ | 1,900 |

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