Segment Information (Tables)

9 Months Ended

Sep. 26, 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				Nine Months Ended
	September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
	(in thousands)
Research Models and Services
Revenue	$	118,451	$	124,021	$	358,506	$	389,636
Gross margin	47,841		45,295		143,352		149,392
Operating income	31,494		28,056		93,800		97,734
Depreciation and amortization	5,319		7,277		16,712		20,277
Capital expenditures	3,022		4,110		12,111		11,528
Discovery and Safety Assessment
Revenue	$	158,272	$	140,862	$	451,659	$	388,614
Gross margin	53,721		39,968		146,660		105,084
Operating income	33,191		19,329		84,856		48,840
Depreciation and amortization	11,509		13,340		35,060		33,867
Capital expenditures	4,277		3,436		13,756		11,330
Manufacturing Support
Revenue	$	72,742	$	62,684	$	199,287	$	189,864
Gross margin	36,513		33,005		100,506		98,239
Operating income	18,424		19,220		55,653		58,091
Depreciation and amortization	5,139		3,513		12,034		10,625
Capital expenditures	2,139		1,463		5,475		5,444

Reconciliation of Segment Operating Income to Consolidated Operating Income

For the three months ended September 26, 2015, reconciliations of segment operating income, depreciation and amortization, and capital expenditures to the respective consolidated amounts are as follows:

	Operating Income						Depreciation and Amortization				Capital Expenditures
	September 26, 2015			September 27, 2014			September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
	(in thousands)
Total reportable segments	$	83,109		$	66,605		$	21,967	$	24,130	$	9,438	$	9,009
Unallocated corporate	(27,669		)	(20,433		)	1,847		1,938		1,014		393
Total consolidated	$	55,440		$	46,172		$	23,814	$	26,068	$	10,452	$	9,402

For the nine months ended September 26, 2015, reconciliations of segment operating income, depreciation and amortization, and capital expenditures to the respective consolidated amounts are as follows:

	Operating Income						Depreciation and Amortization				Capital Expenditures
	September 26, 2015			September 27, 2014			September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
	(in thousands)
Total reportable segments	$	234,309		$	204,665		$	63,806	$	64,769	$	31,342	$	28,302
Unallocated corporate	(80,129		)	(67,762		)	5,524		5,666		3,666		1,605
Total consolidated	$	154,180		$	136,903		$	69,330	$	70,435	$	35,008	$	29,907

Schedule of Net Sales for Each Significant Service Area

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

	Three Months Ended				Nine Months Ended
	September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
	(in thousands)
Research models and services	$	118,451	$	124,021	$	358,506	$	389,636
Discovery and safety assessment	158,272		140,862		451,659		388,614
Microbial Solutions	39,110		31,834		105,589		97,879
Other manufacturing support	33,632		30,850		93,698		91,985
Manufacturing support	72,742		62,684		199,287		189,864
Total revenue	$	349,465	$	327,567	$	1,009,452	$	968,114

Summary of Unallocated Corporate Overhead

A summary of unallocated corporate overhead consists of the following:

	Three Months Ended				Nine Months Ended
	September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
	(in thousands)
Stock-based compensation expense	$	6,802	$	4,918	$	19,501	$	13,525
Salary, bonus and fringe	6,821		5,892		24,751		23,597
Consulting, audit and professional services	4,280		3,053		11,051		8,721
IT related expenses	2,618		1,767		6,167		4,667
Depreciation expense	1,847		1,954		5,524		5,666
Acquisition related adjustments	3,478		580		7,072		5,256
Other general unallocated corporate expenses	1,823		2,269		6,063		6,330
Total unallocated corporate overhead costs	$	27,669	$	20,433	$	80,129	$	67,762