Restructuring (Tables)

6 Months Ended

Jun. 27, 2015

The following table rolls forward the Company’s severance and retention cost liability:



	December 27, 2014		Expense		Payments and Adjustments			June 27, 2015
	(in thousands)
Severance and retention cost liability	$	2,666	$	1,835	$	(2,765	)	$	1,736
Total	$	2,666	$	1,835	$	(2,765	)	$	1,736

The following table presents severance and retention costs by classification on the income statement:



	Three Months Ended				Six Months Ended
	June 27, 2015		June 28, 2014		June 27, 2015		June 28, 2014
	(in thousands)
Severance charges included in cost of revenue	$	137	$	1,072	$	667	$	2,754
Severance charges included in selling, general and administrative	568		1,817		1,168		2,035
Total expense	$	705	$	2,889	$	1,835	$	4,789

The following table presents severance and retention cost by reportable segment:



	Three Months Ended				Six Months Ended
	June 27, 2015		June 28, 2014		June 27, 2015		June 28, 2014
	(in thousands)
Research models and services	$	80	$	2,011	$	999	$	3,595
Discovery and safety assessment	456		854		475		1,049
Manufacturing support	118		24		295		24
Corporate	51		—		66		121
Total expense	$	705	$	2,889	$	1,835	$	4,789