Industry Segment Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Schedule of Sales and Operating Income by Operating Segment, Excluding Discontinued Operations

Revenue and operating income (loss) by operating segment, excluding discontinued operations, are shown in the table below:

	Three Months Ended						Six Months Ended
	June 30, 2013			July 1, 2012			June 30, 2013			July 1, 2012
	(In thousands)
Human Health
Product revenue	$	235,924		$	226,764		$	454,997		$	446,546
Service revenue	64,019			60,989			126,275			121,985
Total revenue	299,943			287,753			581,272			568,531
Operating income from continuing operations	30,076			30,353			55,096			48,564
Environmental Health
Product revenue	138,101			137,479			265,647			274,890
Service revenue	105,253			96,558			201,756			189,259
Total revenue	243,354			234,037			467,403			464,149
Operating income from continuing operations	19,298			29,344			40,026			59,473
Corporate
Operating loss from continuing operations(1)	(9,710		)	(9,910		)	(19,557		)	(21,868		)
Continuing Operations
Product revenue	$	374,025		$	364,243		$	720,644		$	721,436
Service revenue	169,272			157,547			328,031			311,244
Total revenue	543,297			521,790			1,048,675			1,032,680
Operating income from continuing operations	39,664			49,787			75,565			86,169
Interest and other expense, net (see Note 5)	12,865			11,358			24,905			24,188
Income from continuing operations before income taxes	$	26,799		$	38,429		$	50,660		$	61,981

____________________________

⁽¹⁾  The expenses related to the mark-to-market adjustment on postretirement benefit plans have been included in the Corporate operating loss from continuing operations, and together constituted a pre-tax gain of $0.05 million and a pre-tax loss of $1.2 million for the six months ended June 30, 2013 and July 1, 2012, respectively. There were no expenses related to the mark-to-market adjustment on postretirement benefit plans for either the three months ended June 30, 2013 or July 1, 2012.