Segment Information (Tables)

3 Months Ended

Mar. 28, 2015

Segment Reporting [Abstract]

Schedule of Sales and Other Financial Information by Business Segment

The following table presents revenue and other financial information by reportable segment:

	Three Months Ended
	March 28, 2015		March 29, 2014
	(in thousands)
Research Models and Services
Revenue	$	120,011	$	132,495
Gross margin	45,804		51,647
Operating income	28,845		35,444
Depreciation and amortization	6,045		6,441
Capital expenditures	2,733		4,099
Discovery and Safety Assessment
Revenue	$	140,012	$	105,138
Gross margin	43,683		25,659
Operating income	23,516		11,713
Depreciation and amortization	11,139		8,142
Capital expenditures	5,378		4,036
Manufacturing Support
Revenue	$	60,391	$	61,735
Gross margin	30,173		31,507
Operating income	16,798		18,416
Depreciation and amortization	3,286		3,628
Capital expenditures	1,566		2,264

Reconciliation of Segment Operating Income to Consolidated Operating Income

A reconciliation of segment operating income, depreciation and amortization, and capital expenditures to the respective consolidated amounts is as follows:

	Operating Income						Depreciation and Amortization				Capital Expenditures
	Three Months Ended
	March 28, 2015			March 29, 2014			March 28, 2015		March 29, 2014		March 28, 2015		March 29, 2014
	(in thousands)
Total reportable segments	$	69,159		$	65,573		$	20,470	$	18,211	$	9,677	$	10,399
Unallocated corporate	(26,154		)	(25,867		)	1,898		1,839		971		791
Total consolidated	$	43,005		$	39,706		$	22,368	$	20,050	$	10,648	$	11,190

Schedule of Net Sales for Each Significant Service Area

Revenue for each significant product or service area is as follows:

	Three Months Ended
	March 28, 2015		March 29, 2014
	(in thousands)
Research models and services	$	120,011	$	132,495
Discovery and safety assessment	140,012		105,138
Endotoxin and Microbial Detection	32,826		32,465
Other manufacturing support	27,565		29,270
Manufacturing support	60,391		61,735
Total revenue	$	320,414	$	299,368

Summary of Unallocated Corporate Overhead

A summary of unallocated corporate overhead consists of the following:

	Three Months Ended
	March 28, 2015			March 29, 2014
	(in thousands)
Stock-based compensation expense	$	6,280		$	3,702
Salary, bonus and fringe	10,696			10,267
Consulting, audit and professional services	3,641			3,231
IT related expenses	1,864			1,577
Depreciation expense	1,898			1,839
Acquisition related adjustments	(362		)	3,305
Other general unallocated corporate expenses	2,137			1,946
Total unallocated corporate overhead costs	$	26,154		$	25,867