Business Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Sales and Other Financial Information by Business Segment

The following table presents sales and other financial information by business segment.



	Three Months Ended				Six Months Ended
	June 30, 2012		June 25, 2011		June 30, 2012		June 25, 2011
Research Models and Services
Net sales	$	173,611	$	178,163	$	356,763	$	351,534
Gross margin	76,266		78,307		158,462		152,146
Operating income	55,542		55,691		115,009		107,433
Depreciation and amortization	9,085		9,318		18,027		18,587
Capital expenditures	7,569		4,010		20,469		8,413
Preclinical Services
Net sales	$	111,112	$	110,100	$	213,941	$	222,572
Gross margin	27,319		28,013		49,335		56,812
Operating income	10,809		7,875		14,983		17,181
Depreciation and amortization	10,980		12,498		22,040		24,494
Capital expenditures	1,872		2,650		3,084		5,037

Reconciliation of Segment Operating Income to Consolidated Operating Income

A reconciliation of segment operating income to consolidated operating income is as follows:



	Three Months Ended						Six Months Ended
	June 30, 2012			June 25, 2011			June 30, 2012			June 25, 2011
Total segment operating income	$	66,351		$	63,566		$	129,992		$	124,614
Unallocated corporate overhead	(17,077		)	(10,252		)	(36,978		)	(29,049		)
Consolidated operating income	$	49,274		$	53,314		$	93,014		$	95,565

Schedule of Net Sales for Each Significant Service Area

Net sales for each significant service area are as follows:



	Three Months Ended				Six Months Ended
	June 30, 2012		June 25, 2011		June 30, 2012		June 25, 2011
Research models	$	87,119	$	90,190	$	181,140	$	183,590
Research model services	53,975		55,422		110,306		107,397
Other products	32,517		32,551		65,317		60,547
Research Models and Services	173,611		178,163		356,763		351,534
Preclinical Services	111,112		110,100		213,941		222,572
Total sales	$	284,723	$	288,263	$	570,704	$	574,106

Summary of Unallocated Corporate Overhead

A summary of unallocated corporate overhead consists of the following:



	Three Months Ended						Six Months Ended
	June 30, 2012			June 25, 2011			June 30, 2012		June 25, 2011
Stock-based compensation expense	$	2,900		$	2,528		$	5,685	$	5,514
U.S. retirement plans	1,014			1,055			2,386		2,112
Audit, tax and related expense	637			505			1,291		1,260
Salary and bonus	4,866			4,642			9,789		9,335
Global IT	3,366			2,794			6,216		5,787
Employee health, long-term disability and fringe benefit expense	(1,140		)	675			853		2,314
Consulting and professional services	778			2,201			2,520		3,532
Depreciation expense	1,570			1,593			3,139		3,174
Life insurance death benefit gain	—			(7,710		)	—		(7,710		)
Other general unallocated corporate expenses	3,086			1,969			5,099		3,731
Total unallocated corporate overhead costs	$	17,077		$	10,252		$	36,978	$	29,049

- Definition

Tabular disclosure of all significant reconciling items in the reconciliation of total profit or loss from reportable segments, to the entity's consolidated income before income taxes, extraordinary items, and discontinued operations.

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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